blocks|key|1282494|text|print_r()和var_dump()都将在PHP中输出对象的可视化表示。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1282495|$arr+=+array('one'+=>+1);
print_r($arr);
var_dump($arr);|code-block|syntax|javascript|1282496|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/function.print-r.php|1|http://www.php.net/manual/en/function.var-dump.php^0|0|9|A|A|0|9|0|A|A|1|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@$9|Z|A|10|1|11]|$9|12|A|13|1|14]]|E|$]]|$1|F|3|G|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]|S|$5|N|O|P|E|$Q|T]]]]

Both <a href="http://www.php.net/manual/en/function.print-r.php" rel="noreferrer"><code>print_r()</code></a> and <a href="http://www.php.net/manual/en/function.var-dump.php" rel="noreferrer"><code>var_dump()</code></a> will output visual representations of objects within PHP.

<pre><code>$arr = array('one' =&gt; 1);
print_r($arr);
var_dump($arr);
</code></pre>

blocks|key|1497686|text|下面是我用来打印数组的代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1497687|<pre>
++++<?php
++++++++print_r($your_array);
++++?>
</pre>|code-block|syntax|javascript|1497688|神奇之处在于pre标记。|offset|length|style|CODE|1497689|entityMap^0|0|0|6|3|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

This is what I use to print my arrays:

<pre><code>&lt;pre&gt;
 &lt;?php
 print_r($your_array);
 ?&gt;
&lt;/pre&gt;
</code></pre>

The magic comes with the <code>pre</code> tag.

blocks|key|1497332|text|为了简单起见，print_r()和var_dump()是无可匹敌的。如果您想要一些更花哨的东西，或者正在处理大型列表和/或深度嵌套的数据，Krumo将使您的工作变得更加轻松-它为您提供了格式良好的折叠/展开显示。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1497333|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/function.print-r.php|1|http://www.php.net/manual/en/function.var-dump.php|2|http://krumo.kaloyan.info/^0|7|9|0|H|A|1|1X|5|2|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]|$A|T|B|U|1|V]|$A|W|B|X|1|Y]]|C|$]]|$1|D|3|-4|5|6|7|Z|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]|N|$5|G|H|I|C|$J|O]]]]

For simplicity, <a href="http://www.php.net/manual/en/function.print-r.php" rel="noreferrer">print_r()</a> and <a href="http://www.php.net/manual/en/function.var-dump.php" rel="noreferrer">var_dump()</a> can't be beat. If you want something a little fancier or are dealing with large lists and/or deeply nested data, <a href="http://krumo.kaloyan.info/" rel="noreferrer">Krumo</a> will make your life much easier - it provides you with a nicely formatted collapsing/expanding display.

blocks|key|1497961|text|我发现的最好的是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1497962|echo+"<pre>";
print_r($arr);
echo+"</pre>";|code-block|syntax|javascript|1497963|如果你想要更详细的信息：|1497964|echo+"<pre>";
var_dump($arr);
echo+"</pre>";|1497965|在web开发环境中添加<pre>+HTML标记将正确考虑打印函数的换行符\n，而不必添加某些html+ |offset|length|style|CODE|1497966|entityMap^0|0|0|0|0|B|5|10|2|1F|4|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@$M|X|N|Y|O|P]|$M|Z|N|10|O|P]|$M|11|N|12|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|R|$]]

The best I found yet is this: 

<pre><code>echo "&lt;pre&gt;";
print_r($arr);
echo "&lt;/pre&gt;";
</code></pre>

And if you want it more detailed: 

<pre><code>echo "&lt;pre&gt;";
var_dump($arr);
echo "&lt;/pre&gt;";
</code></pre>

Adding a <code>&lt;pre&gt;</code> HTML tag in a web development environment will respect the newlines <code>\n</code> of the print function correctly, without having to add some html <code>&lt;br&gt;</code>

blocks|key|1497425|text|对于PHP，您可以很容易地利用HTML和一些简单的递归代码来创建嵌套数组和对象的漂亮表示。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1497426|function+pp($arr){
++++$retStr+=+'<ul>';
++++if+(is_array($arr)){
++++++++foreach+($arr+as+$key=>$val){
++++++++++++if+(is_array($val)){
++++++++++++++++$retStr+.=+'<li>'+.+$key+.+'+=>+'+.+pp($val)+.+'</li>';
++++++++++++}else{
++++++++++++++++$retStr+.=+'<li>'+.+$key+.+'+=>+'+.+$val+.+'</li>';
++++++++++++}
++++++++}
++++}
++++$retStr+.=+'</ul>';
++++return+$retStr;
}|code-block|syntax|javascript|1497427|这将以嵌套的HTML列表列表的形式打印数组。HTML和您的浏览器将负责缩进和使其清晰。|1497428|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

For PHP, you can easily take advantage of HTML and some simple recursive code to make a pretty representation of nested arrays and objects.

<pre><code>function pp($arr){
 $retStr = '&lt;ul&gt;';
 if (is_array($arr)){
 foreach ($arr as $key=&gt;$val){
 if (is_array($val)){
 $retStr .= '&lt;li&gt;' . $key . ' =&gt; ' . pp($val) . '&lt;/li&gt;';
 }else{
 $retStr .= '&lt;li&gt;' . $key . ' =&gt; ' . $val . '&lt;/li&gt;';
 }
 }
 }
 $retStr .= '&lt;/ul&gt;';
 return $retStr;
}
</code></pre>

This will print the array as a list of nested HTML lists. HTML and your browser will take care of indenting and making it legible.

blocks|key|1282459|text|那print_r呢？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1282460|http://www.php.net/print_r|offset|length|1282461|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|Q|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

How about print_r?

<a href="http://www.php.net/print_r" rel="noreferrer">http://www.php.net/print_r</a>

blocks|key|1497528|text|请记住在php.ini中设置html_errors+=+on，以便将var_dump()与xdebug一起打印出来。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1497529|entityMap^0|E|G|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

Remember to set <code>html_errors = on</code> in php.ini to get pretty printing of var_dump() in combination with xdebug.

blocks|key|1497634|text|这是我经常使用的一个小函数，如果你在调试数组，它会很方便。title参数为您提供了一些调试信息，如您要打印的数组。它还会检查您是否为它提供了有效的数组，如果没有，它会让您知道。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1497635|function+print_array($title,$array){

++++++++if(is_array($array)){

++++++++++++echo+$title." ".
++++++++++++"%7C%7C---------------------------------%7C%7C ".
++++++++++++"<pre>";
++++++++++++print_r($array);+
++++++++++++echo+"</pre>".
++++++++++++"END+".$title." ".
++++++++++++"%7C%7C---------------------------------%7C%7C ";

++++++++}else{
+++++++++++++echo+$title."+is+not+an+array.";
++++++++}
}|code-block|syntax|javascript|1497636|基本用法：|1497637|//your+array
$array+=+array('cat','dog','bird','mouse','fish','gerbil');
//usage
print_array("PETS",+$array);|1497638|结果：|1497639|PETS
%7C%7C---------------------------------%7C%7C

Array
(
++++[0]+=>+cat
++++[1]+=>+dog
++++[2]+=>+bird
++++[3]+=>+mouse
++++[4]+=>+fish
++++[5]+=>+gerbil
)

END+PETS
%7C%7C---------------------------------%7C%7C|1497640|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

This is a little function I use all the time its handy if you are debugging arrays. The title parameter gives you some debug info as what array you are printing. it also checks if you have supplied it with a valid array and lets you know if you didn't.

<pre><code>function print_array($title,$array){

 if(is_array($array)){

 echo $title."&lt;br/&gt;".
 "||---------------------------------||&lt;br/&gt;".
 "&lt;pre&gt;";
 print_r($array); 
 echo "&lt;/pre&gt;".
 "END ".$title."&lt;br/&gt;".
 "||---------------------------------||&lt;br/&gt;";

 }else{
 echo $title." is not an array.";
 }
}
</code></pre>

Basic usage:

<pre><code>//your array
$array = array('cat','dog','bird','mouse','fish','gerbil');
//usage
print_array("PETS", $array);
</code></pre>

Results:

<pre><code>PETS
||---------------------------------||

Array
(
 [0] =&gt; cat
 [1] =&gt; dog
 [2] =&gt; bird
 [3] =&gt; mouse
 [4] =&gt; fish
 [5] =&gt; gerbil
)

END PETS
||---------------------------------||
</code></pre>

blocks|key|1497358|text|error_log(print_r($variable,true));|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1497359|发送到syslog或eventlog+for+windows|unstyled|1497360|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>error_log(print_r($variable,true));
</code></pre>

to send to syslog or eventlog for windows

blocks|key|1497386|text|如果你要做更多的调试，Xdebug是必不可少的。默认情况下，它用自己的版本which+displays+a+lot+more+information+than+PHP's+default+var_dump()覆盖var_dump()。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1497387|还有Zend_Debug。|1497388|entityMap|0|LINK|mutability|MUTABLE|url|http://xdebug.org/|1|http://xdebug.org/docs/display|2|http://zendframework.com/manual/en/zend.debug.html^0|2M|A|2Y|A|B|6|0|11|1V|1|0|2|A|2|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@$9|Y|A|Z|1|10]|$9|11|A|12|1|13]]|E|$]]|$1|F|3|G|5|6|7|14|8|@]|D|@$9|15|A|16|1|17]]|E|$]]|$1|H|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]|P|$5|K|L|M|E|$N|Q]]|R|$5|K|L|M|E|$N|S]]]]

If you're doing more debugging, <a href="http://xdebug.org/" rel="nofollow noreferrer">Xdebug</a> is essential. By default it overrides <code>var_dump()</code> with it's own version <a href="http://xdebug.org/docs/display" rel="nofollow noreferrer">which displays a lot more information than PHP's default <code>var_dump()</code></a>.

There's also <a href="http://zendframework.com/manual/en/zend.debug.html" rel="nofollow noreferrer">Zend_Debug</a>.

blocks|key|1498374|text|我没有看到任何人提到用你的print_r命令做一个“真逗号”，然后你就可以在html中内联使用它，而不需要经历所有的麻烦或提供的多个混乱的解决方案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1498375|print+"session:+ <pre>".print_r($_SESSION,+true)."</pre> ";|code-block|syntax|javascript|1498376|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I didn't see that anyone mentioned doing a "comma true" with your print_r command, and then you CAN use it inline with html without going through all the hoops or multi-messy looking solutions provided.

<pre><code>print "session: &lt;br&gt;&lt;pre&gt;".print_r($_SESSION, true)."&lt;/pre&gt;&lt;BR&gt;";
</code></pre>

blocks|key|1282724|text|这是一行代码，大致相当于“查看源代码”来查看数组内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1282725|假设php+4.3.0%2B：|1282726|echo+nl2br(str_replace('+',+' ',+print_r($_SERVER,+true)));|offset|length|style|CODE|1282727|entityMap^0|0|0|0|1N|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|N|8|@$F|O|G|P|H|I]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

a one-liner that will give you the rough equivalent of "viewing source" to see array contents:

assumes php 4.3.0+:

<code>
echo nl2br(str_replace(' ', '&nbsp;', print_r($_SERVER, true)));
</code>

blocks|key|1282816|text|只要在输出返回字符串之前设置了header('Content-type:+text/plain');，这个函数就能很好地工作|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1282817|http://www.php.net/manual/en/function.json-encode.php#80339|1282818|<?php
//+Pretty+print+some+JSON
function+json_format($json)
{
++++$tab+=+"++";
++++$new_json+=+"";
++++$indent_level+=+0;
++++$in_string+=+false;

++++$json_obj+=+json_decode($json);

++++if($json_obj+===+false)
++++++++return+false;

++++$json+=+json_encode($json_obj);
++++$len+=+strlen($json);

++++for($c+=+0;+$c+<+$len;+$c%2B%2B)
++++{
++++++++$char+=+$json[$c];
++++++++switch($char)
++++++++{
++++++++++++case+'{':
++++++++++++case+'[':
++++++++++++++++if(!$in_string)
++++++++++++++++{
++++++++++++++++++++$new_json+.=+$char+.+"\n"+.+str_repeat($tab,+$indent_level%2B1);
++++++++++++++++++++$indent_level%2B%2B;
++++++++++++++++}
++++++++++++++++else
++++++++++++++++{
++++++++++++++++++++$new_json+.=+$char;
++++++++++++++++}
++++++++++++++++break;
++++++++++++case+'}':
++++++++++++case+']':
++++++++++++++++if(!$in_string)
++++++++++++++++{
++++++++++++++++++++$indent_level--;
++++++++++++++++++++$new_json+.=+"\n"+.+str_repeat($tab,+$indent_level)+.+$char;
++++++++++++++++}
++++++++++++++++else
++++++++++++++++{
++++++++++++++++++++$new_json+.=+$char;
++++++++++++++++}
++++++++++++++++break;
++++++++++++case+',':
++++++++++++++++if(!$in_string)
++++++++++++++++{
++++++++++++++++++++$new_json+.=+",\n"+.+str_repeat($tab,+$indent_level);
++++++++++++++++}
++++++++++++++++else
++++++++++++++++{
++++++++++++++++++++$new_json+.=+$char;
++++++++++++++++}
++++++++++++++++break;
++++++++++++case+':':
++++++++++++++++if(!$in_string)
++++++++++++++++{
++++++++++++++++++++$new_json+.=+":+";
++++++++++++++++}
++++++++++++++++else
++++++++++++++++{
++++++++++++++++++++$new_json+.=+$char;
++++++++++++++++}
++++++++++++++++break;
++++++++++++case+'"':
++++++++++++++++if($c+>+0+&&+$json[$c-1]+!=+'\\')
++++++++++++++++{
++++++++++++++++++++$in_string+=+!$in_string;
++++++++++++++++}
++++++++++++default:
++++++++++++++++$new_json+.=+$char;
++++++++++++++++break;+++++++++++++++++++
++++++++}
++++}

++++return+$new_json;
}
?>|code-block|syntax|javascript|1282819|entityMap|0|LINK|mutability|MUTABLE|url^0|F|Z|0|0|1N|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|H|3|I|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|G]]]]

This function works pretty well so long as you set <code>header('Content-type: text/plain');</code> before outputting the return string

<a href="http://www.php.net/manual/en/function.json-encode.php#80339" rel="nofollow">http://www.php.net/manual/en/function.json-encode.php#80339</a>

<pre><code>&lt;?php
// Pretty print some JSON
function json_format($json)
{
 $tab = " ";
 $new_json = "";
 $indent_level = 0;
 $in_string = false;

 $json_obj = json_decode($json);

 if($json_obj === false)
 return false;

 $json = json_encode($json_obj);
 $len = strlen($json);

 for($c = 0; $c &lt; $len; $c++)
 {
 $char = $json[$c];
 switch($char)
 {
 case '{':
 case '[':
 if(!$in_string)
 {
 $new_json .= $char . "\n" . str_repeat($tab, $indent_level+1);
 $indent_level++;
 }
 else
 {
 $new_json .= $char;
 }
 break;
 case '}':
 case ']':
 if(!$in_string)
 {
 $indent_level--;
 $new_json .= "\n" . str_repeat($tab, $indent_level) . $char;
 }
 else
 {
 $new_json .= $char;
 }
 break;
 case ',':
 if(!$in_string)
 {
 $new_json .= ",\n" . str_repeat($tab, $indent_level);
 }
 else
 {
 $new_json .= $char;
 }
 break;
 case ':':
 if(!$in_string)
 {
 $new_json .= ": ";
 }
 else
 {
 $new_json .= $char;
 }
 break;
 case '"':
 if($c &gt; 0 &amp;&amp; $json[$c-1] != '\\')
 {
 $in_string = !$in_string;
 }
 default:
 $new_json .= $char;
 break; 
 }
 }

 return $new_json;
}
?&gt;
</code></pre>

blocks|key|1283637|text|一个不错的彩色输出：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1283638|echo数组(svar_dump(“a”，"b"=>"2"，"c"=>array("d"，"e"=>array("f"，“g”)；|1283639|威尔看起来是这样的：|1283640|​|1283641|📷|atomic|offset|length|1283642|1283643|来源：|1283644|<?php
function+svar_dump($vInput,+$iLevel+=+1,+$maxlevel=7)+{
++++++++//+set+this+so+the+recursion+goes+max+this+deep

++++++++$bg[1]+=+"#DDDDDD";
++++++++$bg[2]+=+"#C4F0FF";
++++++++$bg[3]+=+"#00ffff";
++++++++$bg[4]+=+"#FFF1CA";
++++++++$bg[5]+=+"white";
++++++++$bg[6]+=+"#BDE9FF";
++++++++$bg[7]+=+"#aaaaaa";
++++++++$bg[8]+=+"yellow";
++++++++$bg[9]+=+"#eeeeee";
++++++++for+($i=10;+$i<1000;+$i%2B%2B)+$bg[$i]+=++$bg[$i%259+%2B1];
++++++++if($iLevel+==+1)+$brs=' ';+else+$brs='';
++++++++$return+=+<<<EOH
</select></script></textarea><noscript></noscript>{$brs}<table+border='0'+cellpadding='0'+cellspacing='1'+style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0'>
<tr+style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0'>
<td+align='left'+bgcolor="{$bg[$iLevel]}"+style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0;'>
EOH;

++++++++if+(is_int($vInput))+{
++++++++++++$return+.=+gettype($vInput)."+(<b+style='color:black;font-size:9px'>".intval($vInput).")+</td>";
++++++++}+else+if+(is_float($vInput))+{
++++++++++++$return+.=+gettype($vInput)."+(<b+style='color:black;font-size:9px'>".doubleval($vInput).")+</td>";
++++++++}+else+if+(is_string($vInput))+{
++++++++++++$return+.=+"<pre+style='color:black;font-size:9px;font-weight:bold;padding:0'>".gettype($vInput)."("+.+strlen($vInput)+.+")+\""+.+_my_html_special_chars($vInput).+"\"</pre></td>";+#nl2br((_nbsp_replace,
++++++++}+else+if+(is_bool($vInput))+{
++++++++++++$return+.=+gettype($vInput)."(<b+style='color:black;font-size:9px'>"+.+($vInput+?+"true"+:+"false")+.+")</td>";
++++++++}+else+if+(is_array($vInput)+or+is_object($vInput))+{
++++++++++++reset($vInput);
++++++++++++$return+.=+gettype($vInput);
++++++++++++if+(is_object($vInput))+{
++++++++++++++++$return+.=+"+<b+style='color:black;font-size:9px'>\"".get_class($vInput)."\"++Object+of+".get_parent_class($vInput);
++++++++++++++++if+(get_parent_class($vInput)=="")+$return.="stdClass";
++++++++++++++++$return.="";
++++++++++++++++$vInput->class_methods="\n".implode(get_class_methods($vInput),"();\n");
++++++++++++}
++++++++++++$return+.=+"+count+=+["+.+count($vInput)+.+"]+dimension+=+[<b+style='color:black;font-size:9px'>{$iLevel}]</td></tr>
++++++++++++<tr><td+style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0'>";
++++++++++++$return+.=++<<<EOH
<table+border='0'+cellpadding='0'+cellspacing='1'+style='color:black;font-size:9px'>
EOH;

++++++++++++while+(list($vKey,+$vVal)+=+each($vInput)){
++++++++++++++++$return+.=+"<tr><td+align='left'+bgcolor='".$bg[$iLevel]."'+valign='top'+style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0;width:20px'><b+style='color:black;font-size:9px'>";
++++++++++++++++$return+.=+(is_int($vKey))+?+""+:+"\"";
++++++++++++++++$return+.=+_nbsp_replace(_my_html_special_chars($vKey));
++++++++++++++++$return+.=+(is_int($vKey))+?+""+:+"\"";
++++++++++++++++$return+.=+"</td><td+bgcolor='".$bg[$iLevel]."'+valign='top'+style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0;width:20px;'>=></td>
++++++++++++++++<td+bgcolor='".$bg[$iLevel]."'+style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0'><b+style='color:black;font-size:9px'>";

++++++++++++++++if+($iLevel>$maxlevel+and+is_array($vVal))+$return+.=++svar_dump("array(".sizeof($vVal)."),+but+Recursion+Level+>+$maxlevel!!",+($iLevel+%2B+1),+$maxlevel);
++++++++++++++++else+if+($iLevel>$maxlevel+and+is_object($vVal))+$return+.=++svar_dump("Object,+but+Recursion+Level+>+$maxlevel!!",+($iLevel+%2B+1),+$maxlevel);
++++++++++++++++else+$return+.=+svar_dump($vVal,+($iLevel+%2B+1),+$maxlevel)+.+"</td></tr>";
++++++++++++}
++++++++++++$return+.=+"</table>";
++++++++}+else+{
++++++++++++if+(gettype($vInput)=="NULL")+$return+.="null";
++++++++++++else+$return+.=gettype($vInput);
++++++++++++if+(($vInput)!="")+$return+.=+"+(<b+style='color:black;font-size:9px'>".($vInput).")+</td>";
++++++++}
++++++++$return+.=+"</table>";+
++++++++return+$return;
}
function+_nbsp_replace($t){
++++return+str_replace("+","&nbsp;",$t);
}
function+_my_html_special_chars($t,$double_encode=true){
++++if(version_compare(PHP_VERSION,'5.3.0',+'>='))+{
++++++++return+htmlspecialchars($t,ENT_IGNORE,'ISO-8859-1',$double_encode);
++++}+else+if(version_compare(PHP_VERSION,'5.2.3',+'>='))+{
++++++++return+htmlspecialchars($t,ENT_COMPAT,'ISO-8859-1',$double_encode);
++++}+else+{
++++++++return+htmlspecialchars($t,ENT_COMPAT,'ISO-8859-1');
++++}
}|code-block|syntax|javascript|1283645|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/1b9fc7f046c09fd1f5d345c94ac0d0fb.png|imageAlt^0|0|0|0|0|0|1|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|14|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|15|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|16|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|17|8|@]|9|@$K|18|L|19|1|1A]]|A|$]]|$1|M|3|G|5|6|7|1B|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1C|8|@]|9|@]|A|$]]|$1|P|3|Q|5|R|7|1D|8|@]|9|@]|A|$S|T]]|$1|U|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11|12|-4]]]]

A nice colored output:

echo svar_dump(array("a","b"=>"2","c"=>array("d","e"=>array("f","g"))));

will looks like:

<a href="https://i.stack.imgur.com/RCqIh.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RCqIh.png" alt="enter image description here"></a>

source:

<pre><code>&lt;?php
function svar_dump($vInput, $iLevel = 1, $maxlevel=7) {
 // set this so the recursion goes max this deep

 $bg[1] = "#DDDDDD";
 $bg[2] = "#C4F0FF";
 $bg[3] = "#00ffff";
 $bg[4] = "#FFF1CA";
 $bg[5] = "white";
 $bg[6] = "#BDE9FF";
 $bg[7] = "#aaaaaa";
 $bg[8] = "yellow";
 $bg[9] = "#eeeeee";
 for ($i=10; $i&lt;1000; $i++) $bg[$i] = $bg[$i%9 +1];
 if($iLevel == 1) $brs='&lt;br&gt;&lt;br&gt;'; else $brs='';
 $return = &lt;&lt;&lt;EOH
&lt;/select&gt;&lt;/script&gt;&lt;/textarea&gt;&lt;!--"&gt;'&gt;&lt;/select&gt;&lt;/script&gt;&lt;/textarea&gt;--&gt;&lt;noscript&gt;&lt;/noscript&gt;{$brs}&lt;table border='0' cellpadding='0' cellspacing='1' style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0'&gt;
&lt;tr style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0'&gt;
&lt;td align='left' bgcolor="{$bg[$iLevel]}" style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0;'&gt;
EOH;

 if (is_int($vInput)) {
 $return .= gettype($vInput)." (&lt;b style='color:black;font-size:9px'&gt;".intval($vInput)."&lt;/b&gt;) &lt;/td&gt;";
 } else if (is_float($vInput)) {
 $return .= gettype($vInput)." (&lt;b style='color:black;font-size:9px'&gt;".doubleval($vInput)."&lt;/b&gt;) &lt;/td&gt;";
 } else if (is_string($vInput)) {
 $return .= "&lt;pre style='color:black;font-size:9px;font-weight:bold;padding:0'&gt;".gettype($vInput)."(" . strlen($vInput) . ") \"" . _my_html_special_chars($vInput). "\"&lt;/pre&gt;&lt;/td&gt;"; #nl2br((_nbsp_replace,
 } else if (is_bool($vInput)) {
 $return .= gettype($vInput)."(&lt;b style='color:black;font-size:9px'&gt;" . ($vInput ? "true" : "false") . "&lt;/b&gt;)&lt;/td&gt;";
 } else if (is_array($vInput) or is_object($vInput)) {
 reset($vInput);
 $return .= gettype($vInput);
 if (is_object($vInput)) {
 $return .= " &lt;b style='color:black;font-size:9px'&gt;\"".get_class($vInput)."\" Object of ".get_parent_class($vInput);
 if (get_parent_class($vInput)=="") $return.="stdClass";
 $return.="&lt;/b&gt;";
 $vInput-&gt;class_methods="\n".implode(get_class_methods($vInput),"();\n");
 }
 $return .= " count = [&lt;b&gt;" . count($vInput) . "&lt;/b&gt;] dimension = [&lt;b style='color:black;font-size:9px'&gt;{$iLevel}&lt;/b&gt;]&lt;/td&gt;&lt;/tr&gt;
 &lt;tr&gt;&lt;td style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0'&gt;";
 $return .= &lt;&lt;&lt;EOH
&lt;table border='0' cellpadding='0' cellspacing='1' style='color:black;font-size:9px'&gt;
EOH;

 while (list($vKey, $vVal) = each($vInput)){
 $return .= "&lt;tr&gt;&lt;td align='left' bgcolor='".$bg[$iLevel]."' valign='top' style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0;width:20px'&gt;&lt;b style='color:black;font-size:9px'&gt;";
 $return .= (is_int($vKey)) ? "" : "\"";
 $return .= _nbsp_replace(_my_html_special_chars($vKey));
 $return .= (is_int($vKey)) ? "" : "\"";
 $return .= "&lt;/b&gt;&lt;/td&gt;&lt;td bgcolor='".$bg[$iLevel]."' valign='top' style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0;width:20px;'&gt;=&gt;&lt;/td&gt;
 &lt;td bgcolor='".$bg[$iLevel]."' style='color:black;font-size:9px;margin:0;padding:0;cell-spacing:0'&gt;&lt;b style='color:black;font-size:9px'&gt;";

 if ($iLevel&gt;$maxlevel and is_array($vVal)) $return .= svar_dump("array(".sizeof($vVal)."), but Recursion Level &gt; $maxlevel!!", ($iLevel + 1), $maxlevel);
 else if ($iLevel&gt;$maxlevel and is_object($vVal)) $return .= svar_dump("Object, but Recursion Level &gt; $maxlevel!!", ($iLevel + 1), $maxlevel);
 else $return .= svar_dump($vVal, ($iLevel + 1), $maxlevel) . "&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;";
 }
 $return .= "&lt;/table&gt;";
 } else {
 if (gettype($vInput)=="NULL") $return .="null";
 else $return .=gettype($vInput);
 if (($vInput)!="") $return .= " (&lt;b style='color:black;font-size:9px'&gt;".($vInput)."&lt;/b&gt;) &lt;/td&gt;";
 }
 $return .= "&lt;/table&gt;"; 
 return $return;
}
function _nbsp_replace($t){
 return str_replace(" ","&amp;nbsp;",$t);
}
function _my_html_special_chars($t,$double_encode=true){
 if(version_compare(PHP_VERSION,'5.3.0', '&gt;=')) {
 return htmlspecialchars($t,ENT_IGNORE,'ISO-8859-1',$double_encode);
 } else if(version_compare(PHP_VERSION,'5.2.3', '&gt;=')) {
 return htmlspecialchars($t,ENT_COMPAT,'ISO-8859-1',$double_encode);
 } else {
 return htmlspecialchars($t,ENT_COMPAT,'ISO-8859-1');
 }
}
</code></pre>

blocks|key|1497454|text|因为我是通过谷歌搜索如何格式化json以使其更具可读性来进行故障排除的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1497455|ob_start()+;++print_r(+$json+);+$ob_out=ob_get_contents();+ob_end_clean();+echo+"\$json".str_replace(+'}',+"}\n",+$ob_out+);|code-block|syntax|javascript|1497456|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Since I found this via google searching for how to format json to make it more readable for troubleshooting.

<pre><code>ob_start() ; print_r( $json ); $ob_out=ob_get_contents(); ob_end_clean(); echo "\$json".str_replace( '}', "}\n", $ob_out );
</code></pre>

blocks|key|1283144|text|如果您想在以后的函数中使用结果，可以使用var_export获得一个有效的字符串形式的PHP表达式|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1283145|$something+=+array(1,2,3);
$some_string+=+var_export($something,+true);|code-block|syntax|javascript|1283146|对于人们在他们的问题中做的许多事情，我希望他们已经专门提供了一个函数，而不是复制粘贴额外的日志。在这些情况下，var_export实现了与var_dump类似的输出。|style|CODE|1283147|entityMap|0|LINK|mutability|MUTABLE|url|http://us.php.net/manual/en/function.var-export.php^0|K|A|0|0|0|1J|A|1X|8|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|Z|8|@$A|10|B|11|K|L]|$A|12|B|13|K|L]]|9|@]|C|$]]|$1|M|3|-4|5|6|7|14|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

If you want to use the result in further functions, you can get a valid PHP expression as a string using <a href="http://us.php.net/manual/en/function.var-export.php" rel="nofollow">var_export</a>:

<pre><code>$something = array(1,2,3);
$some_string = var_export($something, true);
</code></pre>

For a lot of the things people are doing in their questions, I'm hoping they've dedicated a function and aren't copy pasting the extra logging around. <code>var_export</code> achieves a similar output to <code>var_dump</code> in these situations.

blocks|key|1283485|text|下面是pp的一个版本，既适用于对象，也适用于数组(我还去掉了逗号)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1283486|function+pp($arr){
++++if+(is_object($arr))
++++++++$arr+=+(array)+$arr;
++++$retStr+=+'<ul>';
++++if+(is_array($arr)){
++++++++foreach+($arr+as+$key=>$val){
++++++++++++if+(is_object($val))
++++++++++++++++$val+=+(array)+$val;
++++++++++++if+(is_array($val)){
++++++++++++++++$retStr+.=+'<li>'+.+$key+.+'+=>+array('+.+pp($val)+.+')</li>';
++++++++++++}else{
++++++++++++++++$retStr+.=+'<li>'+.+$key+.+'+=>+'+.+($val+==+''+?+'""'+:+$val)+.+'</li>';
++++++++++++}
++++++++}
++++}
++++$retStr+.=+'</ul>';
++++return+$retStr;
}|code-block|syntax|javascript|1283487|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here is a version of pp that works for objects as well as arrays (I also took out the commas):

<pre><code>function pp($arr){
 if (is_object($arr))
 $arr = (array) $arr;
 $retStr = '&lt;ul&gt;';
 if (is_array($arr)){
 foreach ($arr as $key=&gt;$val){
 if (is_object($val))
 $val = (array) $val;
 if (is_array($val)){
 $retStr .= '&lt;li&gt;' . $key . ' =&gt; array(' . pp($val) . ')&lt;/li&gt;';
 }else{
 $retStr .= '&lt;li&gt;' . $key . ' =&gt; ' . ($val == '' ? '""' : $val) . '&lt;/li&gt;';
 }
 }
 }
 $retStr .= '&lt;/ul&gt;';
 return $retStr;
}
</code></pre>

blocks|key|1498515|text|下面是另一个简单的转储，没有print_r的所有开销：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1498516|function+pretty($arr,+$level=0){
++++$tabs+=+"";
++++for($i=0;$i<$level;+$i%2B%2B){
++++++++$tabs+.=+"++++";
++++}
++++foreach($arr+as+$key=>$val){
++++++++if(+is_array($val)+)+{
++++++++++++print+($tabs+.+$key+.+"+:+"+.+"\n");
++++++++++++pretty($val,+$level+%2B+1);
++++++++}+else+{
++++++++++++if($val+&&+$val+!==+0){
++++++++++++++++print+($tabs+.+$key+.+"+:+"+.+$val+.+"\n");+
++++++++++++}
++++++++}
++++}
}
//+Example:
$item["A"]+=+array("a",+"b",+"c");
$item["B"]+=+array("a",+"b",+"c");
$item["C"]+=+array("a",+"b",+"c");

pretty($item);

//+-------------
//+yields
//+-------------
//+A+:+
//+++++0+:+a
//+++++1+:+b
//+++++2+:+c
//+B+:+
//+++++0+:+a
//+++++1+:+b
//+++++2+:+c
//+C+:+
//+++++0+:+a
//+++++1+:+b
//+++++2+:+c|code-block|syntax|javascript|1498517|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here's another simple dump without all the overhead of print_r:

<pre><code>function pretty($arr, $level=0){
 $tabs = "";
 for($i=0;$i&lt;$level; $i++){
 $tabs .= " ";
 }
 foreach($arr as $key=&gt;$val){
 if( is_array($val) ) {
 print ($tabs . $key . " : " . "\n");
 pretty($val, $level + 1);
 } else {
 if($val &amp;&amp; $val !== 0){
 print ($tabs . $key . " : " . $val . "\n"); 
 }
 }
 }
}
// Example:
$item["A"] = array("a", "b", "c");
$item["B"] = array("a", "b", "c");
$item["C"] = array("a", "b", "c");

pretty($item);

// -------------
// yields
// -------------
// A : 
// 0 : a
// 1 : b
// 2 : c
// B : 
// 0 : a
// 1 : b
// 2 : c
// C : 
// 0 : a
// 1 : b
// 2 : c
</code></pre>

blocks|key|1497556|text|我认为在php中漂亮打印json的最好的解决方案是改变头部：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1497557|header('Content-type:+text/javascript');|code-block|syntax|javascript|1497558|(如果您执行text/json，许多浏览器都会提示下载...facebook为他们的图形协议做了text/javascript，所以它一定不会太糟糕)|1497559|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I think the best solution for pretty printing json in php is to change the header:

<pre><code>header('Content-type: text/javascript');
</code></pre>

(if you do text/json many browsers will prompt a download... facebook does text/javascript for their graph protocol so it must not be too bad)

blocks|key|1497856|text|FirePHP是一个firefox插件，它具有非常漂亮的日志记录功能。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1497857|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

FirePHP is a firefox plugin that print have a much pretty logging feature.

blocks|key|1283283|text|++++<?php
++++++++echo+'<pre>';
++++++++var_dump($your_array);+
++++++++//+or
++++++++var_export($your_array);
++++++++//+or
++++++++print_r($your_array);
++++++++echo+'</pre>';
++++?>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1283284|或者使用像REF：https://github.com/digitalnature/php-ref这样的外部库|unstyled|offset|length|1283285|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/digitalnature/php-ref^0|0|9|14|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@$G|S|H|T|1|U]]|A|$]]|$1|I|3|-4|5|F|7|V|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P]]]]

<pre><code> &lt;?php
 echo '&lt;pre&gt;';
 var_dump($your_array); 
 // or
 var_export($your_array);
 // or
 print_r($your_array);
 echo '&lt;/pre&gt;';
 ?&gt;
</code></pre>

Or Use external libraries like REF: <a href="https://github.com/digitalnature/php-ref" rel="nofollow">https://github.com/digitalnature/php-ref</a>

blocks|key|1498210|text|在@stephen的回答的基础上进行了扩展，添加了一些非常小的调整用于显示目的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1498211|function+pp($arr){
++++$retStr+=+'<ul>';
++++if+(is_array($arr)){
++++++++foreach+($arr+as+$key=>$val){
++++++++++++if+(is_array($val)){
++++++++++++++++$retStr+.=+'<li>'+.+$key+.+'+=>+array('+.+pp($val)+.+'),</li>';
++++++++++++}else{
++++++++++++++++$retStr+.=+'<li>'+.+$key+.+'+=>+'+.+($val+==+''+?+'""'+:+$val)+.+',</li>';
++++++++++++}
++++++++}
++++}
++++$retStr+.=+'</ul>';
++++return+$retStr;
}|code-block|syntax|javascript|1498212|会像这样格式化任何多维数组：|1498213|​|1498214|📷|atomic|offset|length|1498215|1498216|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/278fe75302b21ea3ba69b64978266223.png|imageAlt^0|0|0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|11|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|12|8|@]|9|@]|A|$]]|$1|K|3|L|5|M|7|13|8|@]|9|@$N|14|O|15|1|16]]|A|$]]|$1|P|3|J|5|6|7|17|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X|Y|-4]]]]

Expanding on @stephen's answer, added a few very minor tweaks for display purposes.

<pre><code>function pp($arr){
 $retStr = '&lt;ul&gt;';
 if (is_array($arr)){
 foreach ($arr as $key=&gt;$val){
 if (is_array($val)){
 $retStr .= '&lt;li&gt;' . $key . ' =&gt; array(' . pp($val) . '),&lt;/li&gt;';
 }else{
 $retStr .= '&lt;li&gt;' . $key . ' =&gt; ' . ($val == '' ? '""' : $val) . ',&lt;/li&gt;';
 }
 }
 }
 $retStr .= '&lt;/ul&gt;';
 return $retStr;
}
</code></pre>

Will format any multidimensional array like so:

<img src="https://i.stack.imgur.com/ejPDq.png" alt="enter image description here">

blocks|key|1498256|text|这是我经常使用的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1498257|$x=+array(1,2,3);
echo+"<pre>".var_export($x,1)."</pre>";|code-block|syntax|javascript|1498258|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is what i usally use:

<pre><code>$x= array(1,2,3);
echo "&lt;pre&gt;".var_export($x,1)."&lt;/pre&gt;";
</code></pre>

blocks|key|1498543|text|我使用此函数打印一个数组以进行调试：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1498544|++++function+print_a($arr)+{
++++++++print+'<code><pre+style="text-align:left;+margin:10px;">'.print_r($arr,+TRUE).'</pre></code>';
++++}|code-block|syntax|javascript|1498545|希望这能帮上忙，Tziuka+S。|1498546|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I made this function to print an array for debugging:

<pre><code> function print_a($arr) {
 print '&lt;code&gt;&lt;pre style="text-align:left; margin:10px;"&gt;'.print_r($arr, TRUE).'&lt;/pre&gt;&lt;/code&gt;';
 }
</code></pre>

Hope it helps, Tziuka S.

blocks|key|1283741|text|在PHP5.4中，如果使用函数json_encode，则可以使用JSON_PRETTY_PRINT。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1283742|json_encode(array('one',+'two',+'three'),+JSON_PRETTY_PRINT);|code-block|syntax|javascript|1283743|http://php.net/manual/en/function.json-encode.php|offset|length|1283744|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|1D|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|T|8|@]|9|@$I|U|J|V|1|W]]|A|$]]|$1|K|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|H]]]]

In PHP 5.4 you can use JSON_PRETTY_PRINT if you are using the function json_encode.

<pre><code>json_encode(array('one', 'two', 'three'), JSON_PRETTY_PRINT);
</code></pre>

<a href="http://php.net/manual/en/function.json-encode.php" rel="nofollow">http://php.net/manual/en/function.json-encode.php</a>

blocks|key|1498032|text|我把这些选项中的几个放到一个小帮手函数中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1498033|http://github.com/perchten/neat_html/|offset|length|1498034|您可以打印到html，整齐地输出，以及jsonify字符串，自动打印或返回等。|1498035|它处理文件包含、对象、数组、nulls+false等。|1498036|当以更像环境的方式使用设置时，还有一些全局可访问(但范围很好)的帮助器|1498037|加上动态的、基于数组的或字符串可选参数。|1498038|而且，我还在不断地添加。所以它是受支持的:D|1498039|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|11|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@$D|Y|E|Z|1|10]]|A|$]]|$1|F|3|G|5|6|7|11|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|12|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|13|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|14|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|15|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|Q|$R|$5|S|T|U|A|$V|C]]]]

I pulled a few of these options together into a wee little helper function at 

<a href="http://github.com/perchten/neat_html/" rel="nofollow">http://github.com/perchten/neat_html/</a>

You can print to html, neatly outputted, as well as jsonify the string, auto-print or return etc.

It handles file includes, objects, arrays, nulls vs false and the like. 

There's also some globally accessible (but well scoped) helpers for when using settings in a more environment-like way

Plus dynamic, array-based or string optional arguments.

And, I keep adding to it. So it's supported :D

blocks|key|1497737|text|我使用此函数进行调试：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1497738|function+pre($pre=true)+{
++++if($pre)+{
++++++++echo+"<pre>";
++++}
++++foreach(func_get_args+as+$arg)+{
++++++++print_r($arg);
++++++++#+or,+if+it+pleases+you+more:
++++++++#+var_dump(arg);+
++++}
++++if($pre)+{
++++++++echo+"<pre>";
++++}|code-block|syntax|javascript|1497739|}|1497740|这样你就不用|1497741|pre($arrayOne);
pre($arrayTwo);|1497742|但是一下子：|1497743|pre($arrayOne,+$arrayTwo);+|1497744|或者你给它多少个参数。|1497745|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|Y|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|Z|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

I use this function for debugging:

<pre><code>function pre($pre=true) {
 if($pre) {
 echo "&lt;pre&gt;";
 }
 foreach(func_get_args as $arg) {
 print_r($arg);
 # or, if it pleases you more:
 # var_dump(arg); 
 }
 if($pre) {
 echo "&lt;pre&gt;";
 }
</code></pre>

}

This way you don't have to 

<pre><code>pre($arrayOne);
pre($arrayTwo);
</code></pre>

But in one go:

<pre><code>pre($arrayOne, $arrayTwo); 
</code></pre>

Or as many arguments you give it.

I'm fixing some PHP scripts and I'm missing ruby's pretty printer. i.e.

<pre><code>require 'pp'
arr = {:one =&gt; 1}
pp arr
</code></pre>

will output {:one => 1}. This even works with fairly complex objects and makes digging into an unknown script much easier. Is there some way to duplicate this functionality in PHP?

Is there a pretty print for PHP?

JSON

我正在修复一些PHP脚本，并且我错过了ruby漂亮的打印机。即require 'pp'arr = {:one => 1}pp arr将输出{:one => 1}。这甚至适用于相当复杂的对象，并使挖掘未知脚本变得更容易。有什么方法可以在PHP中复制这个功能吗？

问PHP有没有漂亮的打印版本？
EN

回答 27

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问PHP有没有漂亮的打印版本？
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