blocks|key|3193058|text|使用parse_str()。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3193059|$str+=+'pg_id=2&parent_id=2&document&video';
parse_str($str,+$arr);
print_r($arr);|code-block|syntax|javascript|3193060|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/parse_str^0|2|B|2|B|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@$9|V|A|W|1|X]]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

Using <a href="http://php.net/parse_str" rel="noreferrer"><code>parse_str()</code></a>.

<pre><code>$str = 'pg_id=2&amp;parent_id=2&amp;document&amp;video';
parse_str($str, $arr);
print_r($arr);
</code></pre>

blocks|key|3193062|text|有几种可能的方法，但是对于您来说，已经有了一个内置的parse_str+function|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3193063|$array+=+array();
parse_str($string,+$array);
var_dump($array);|code-block|syntax|javascript|3193064|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/function.parse-str.php^0|Q|9|Q|I|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@$9|V|A|W|1|X]]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

There are several possible methods, but for you, there is already a built-in <a href="http://php.net/manual/function.parse-str.php" rel="nofollow noreferrer"><code>parse_str</code> function</a>:
<pre><code>$array = array();
parse_str($string, $array);
var_dump($array);
</code></pre>

blocks|key|3193068|text|您需要parse_str函数，并且需要将第二个参数设置为将数据放入数组中，而不是放入单个变量中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3193069|$get_string+=+"pg_id=2&parent_id=2&document&video";

parse_str($get_string,+$get_array);

print_r($get_array);|code-block|syntax|javascript|3193070|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/function.parse-str.php^0|3|9|3|9|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@$9|V|A|W|1|X]]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

You want the <a href="http://www.php.net/manual/en/function.parse-str.php" rel="noreferrer"><code>parse_str</code></a> function, and you need to set the second parameter to have the data put in an array instead of into individual variables.

<pre><code>$get_string = "pg_id=2&amp;parent_id=2&amp;document&amp;video";

parse_str($get_string, $get_array);

print_r($get_array);
</code></pre>

blocks|key|3193099|text|使用http://us1.php.net/parse_str|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3193100|注意，它的用法是：|3193101|parse_str($str,+&$array);|code-block|syntax|javascript|3193102|不|3193103|$array+=+parse_str($str);|3193104|请注意，以上内容仅适用于PHP+5.3版及更早版本。PHP+5.4中删除了调用时间传递引用。|3193105|entityMap|0|LINK|mutability|MUTABLE|url|http://us1.php.net/parse_str^0|2|S|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|13|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|14|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|15|8|@]|9|@]|C|$I|J]]|$1|O|3|P|5|6|7|16|8|@]|9|@]|C|$]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

Use <a href="http://us1.php.net/parse_str" rel="nofollow noreferrer">http://us1.php.net/parse_str</a>
Attention, its usage is:
<pre><code>parse_str($str, &amp;$array);
</code></pre>
not
<pre><code>$array = parse_str($str);
</code></pre>
Please note that the above only applies to PHP version 5.3 and earlier. Call-time pass-by-reference has been removed in PHP 5.4.

blocks|key|276645|text|如果您在将查询字符串转换为数组时遇到问题，这是因为编码了与号|type|unstyled|depth|inlineStyleRanges|entityRanges|data|276646|&amp;|code-block|syntax|javascript|276647|然后一定要使用html_entity_decode|offset|length|style|CODE|276648|示例：|276649|//+Input+string+//
$input+=+'pg_id=2&amp;parent_id=2&amp;document&amp;video';

//+Parse+//
parse_str(html_entity_decode($input),+$out);

//+Output+of+$out+//
array(
++'pg_id'+=>+2,
++'parent_id'+=>+2,
++'document'+=>+,
++'video'+=>
)|276650|entityMap^0|0|0|7|I|0|0|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]]|$1|G|3|H|5|6|7|U|8|@$I|V|J|W|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|Y|8|@]|9|@]|A|$E|F]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

If you're having a problem converting a query string to an array because of encoded ampersands

<pre><code>&amp;amp;
</code></pre>

then be sure to use <code>html_entity_decode</code>

Example:
 

<pre><code>// Input string //
$input = 'pg_id=2&amp;amp;parent_id=2&amp;amp;document&amp;amp;video';

// Parse //
parse_str(html_entity_decode($input), $out);

// Output of $out //
array(
 'pg_id' =&gt; 2,
 'parent_id' =&gt; 2,
 'document' =&gt; ,
 'video' =&gt;
)
</code></pre>

blocks|key|275108|text|有时parse_str()本身就很准确，例如，它可以显示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|275109|$url+=+"somepage?id=123&lang=gr&size=300";|code-block|syntax|javascript|275110|parse_str()将返回：|275111|Array+(+
++++[somepage?id]+=>+123+
++++[lang]+=>+gr+
++++[size]+=>+300+
)|275112|将parse_str()与parse_url()结合使用会更好，如下所示：|275113|$url+=+"somepage?id=123&lang=gr&size=300";
parse_str(+parse_url(+$url,+PHP_URL_QUERY),+$array+);
print_r(+$array+);|275114|entityMap^0|2|B|0|0|0|0|1|B|D|B|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|10|8|@$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|S|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|T|$]]

Sometimes <code>parse_str()</code> alone is note accurate, it could display for example:

<pre><code>$url = "somepage?id=123&amp;lang=gr&amp;size=300";
</code></pre>

parse_str() would return:

<pre><code>Array ( 
 [somepage?id] =&gt; 123 
 [lang] =&gt; gr 
 [size] =&gt; 300 
)
</code></pre>

It would be better to combine <code>parse_str()</code> with <code>parse_url()</code> like so:

<pre><code>$url = "somepage?id=123&amp;lang=gr&amp;size=300";
parse_str( parse_url( $url, PHP_URL_QUERY), $array );
print_r( $array );
</code></pre>

blocks|key|278664|text|这是一个用于将查询从当前URL解析为数组的一行程序：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|278665|parse_str($_SERVER['QUERY_STRING'],+$query);|code-block|syntax|javascript|278666|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 a one-liner for parsing a query from the current URL into an array:
<pre><code>parse_str($_SERVER['QUERY_STRING'], $query);
</code></pre>

blocks|key|3193174|text|对于这个特定的问题，选择的答案是正确的，但如果有多余的参数-比如额外的“e”-in，函数将静默失败，不会抛出错误或异常：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3193175|a=2&b=2&c=5&d=4&e=1&e=2&e=3+|code-block|syntax|javascript|3193176|因此，我更喜欢使用自己的解析器，如下所示：|3193177|//$_SERVER['QUERY_STRING']+=+`a=2&b=2&c=5&d=4&e=100&e=200&e=300`+

$url_qry_str++=+explode('&',+$_SERVER['QUERY_STRING']);

//arrays+that+will+hold+the+values+from+the+url
$a_arr+=+$b_arr+=+$c_arr+=+$d_arr+=+$e_arr+=++array();

foreach(+$url_qry_str+as+$param+)
++++{
++++++$var+=++explode('=',+$param,+2);
++++++if($var[0]=="a")++++++$a_arr[]=$var[1];
++++++if($var[0]=="b")++++++$b_arr[]=$var[1];
++++++if($var[0]=="c")++++++$c_arr[]=$var[1];
++++++if($var[0]=="d")++++++$d_arr[]=$var[1];
++++++if($var[0]=="e")++++++$e_arr[]=$var[1];
++++}

++++var_dump($e_arr);+
++++//+will+return+:
++++//array(3)+{+[0]=>+string(1)+"100"+[1]=>+string(1)+"200"+[2]=>+string(1)+"300"+}+|3193178|现在，您已经将每个参数的所有匹配项都放在了它自己的数组中，如果愿意，您可以随时将它们合并到一个数组中。|3193179|希望这能有所帮助！|3193180|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]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

For this specific question the chosen answer is correct but if there is a redundant parameter—like an extra "e"—in the URL the function will silently fail without an error or exception being thrown:

<pre><code>a=2&amp;b=2&amp;c=5&amp;d=4&amp;e=1&amp;e=2&amp;e=3 
</code></pre>

So I prefer using my own parser like so: 

<pre><code>//$_SERVER['QUERY_STRING'] = `a=2&amp;b=2&amp;c=5&amp;d=4&amp;e=100&amp;e=200&amp;e=300` 

$url_qry_str = explode('&amp;', $_SERVER['QUERY_STRING']);

//arrays that will hold the values from the url
$a_arr = $b_arr = $c_arr = $d_arr = $e_arr = array();

foreach( $url_qry_str as $param )
 {
 $var = explode('=', $param, 2);
 if($var[0]=="a") $a_arr[]=$var[1];
 if($var[0]=="b") $b_arr[]=$var[1];
 if($var[0]=="c") $c_arr[]=$var[1];
 if($var[0]=="d") $d_arr[]=$var[1];
 if($var[0]=="e") $e_arr[]=$var[1];
 }

 var_dump($e_arr); 
 // will return :
 //array(3) { [0]=&gt; string(1) "100" [1]=&gt; string(1) "200" [2]=&gt; string(1) "300" } 
</code></pre>

Now you have all the occurrences of each parameter in its own array, you can always merge them into one array if you want to.

Hope that helps!

blocks|key|3193188|text|您可以使用后跟foreach循环的PHP函数parse_str()。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3193189|$str="pg_id=2&parent_id=2&document&video";
parse_str($str,$my_arr);
foreach($my_arr+as+$key=>$value){
++echo+"$key+=>+$value ";
}
print_r($my_arr);|code-block|syntax|javascript|3193190|entityMap^0|7|7|M|B|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

You can use the PHP string function <code>parse_str()</code> followed by <code>foreach</code> loop.

<pre><code>$str="pg_id=2&amp;parent_id=2&amp;document&amp;video";
parse_str($str,$my_arr);
foreach($my_arr as $key=&gt;$value){
 echo "$key =&gt; $value&lt;br&gt;";
}
print_r($my_arr);
</code></pre>

blocks|key|275144|text|这是在MySQL和SQL Server中拆分查询的PHP代码|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|275145|function+splitquery($strquery)
{
++++$arrquery+=+explode('select',+$strquery);

++++$stry+=+'';+$strx+=+'';

++++for($i=0;+$i<count($arrquery);+$i%2B%2B)
++++{
++++++++if($i+==+1)
++++++++{
++++++++++++echo+'select+'+.+trim($arrquery[$i]);
++++++++}
++++++++elseif($i+>+1)
++++++++{
++++++++++++$strx+=+trim($arrquery[($i-1)]);

++++++++++++if(trim(substr($strx,-1))+!=+'(')
++++++++++++{
++++++++++++++++$stry+=+$stry+.+'

++++++++++++++++++++++++select+'+.+trim($arrquery[$i]);
++++++++++++}
++++++++++++else
++++++++++++{
++++++++++++++++$stry+=+$stry.trim('select+'+.+trim($arrquery[$i]));
++++++++++++}
++++++++++++$strx+=+'';
++++++++}
++++}
++++return+$stry;
}|code-block|syntax|javascript|275146|示例：|275147|查询前|275148|Select+xx+from+xx+select+xx,(select+xx)+from+xx+where+y='++++cc'
select+xx+from+xx+left+join+(select+xx)+where+(select+top+1+xxx+from+xxx)+oder+by+xxx+desc";|275149|查询条件|275150|select+xx+from+xx

select+xx,(select+xx)+from+xx+where+y='++++cc'

select+xx+from+xx+left+join+(select+xx)+where+(select+top+1+xxx+from+xxx)+oder+by+xxx+desc|275151|entityMap|0|LINK|mutability|MUTABLE|url|https://en.wikipedia.org/wiki/MySQL|1|https://en.wikipedia.org/wiki/Microsoft_SQL_Server^0|3|5|0|9|A|1|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]|$A|16|B|17|1|18]]|C|$]]|$1|D|3|E|5|F|7|19|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|1A|8|@]|9|@]|C|$]]|$1|K|3|L|5|6|7|1B|8|@]|9|@]|C|$]]|$1|M|3|N|5|F|7|1C|8|@]|9|@]|C|$G|H]]|$1|O|3|P|5|6|7|1D|8|@]|9|@]|C|$]]|$1|Q|3|R|5|F|7|1E|8|@]|9|@]|C|$G|H]]|$1|S|3|-4|5|6|7|1F|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]|10|$5|V|W|X|C|$Y|11]]]]

This is the PHP code to split a query in <a href="https://en.wikipedia.org/wiki/MySQL" rel="nofollow noreferrer">MySQL</a> and <a href="https://en.wikipedia.org/wiki/Microsoft_SQL_Server" rel="nofollow noreferrer">SQL Server</a>:
<pre><code>function splitquery($strquery)
{
 $arrquery = explode('select', $strquery);

 $stry = ''; $strx = '';

 for($i=0; $i&lt;count($arrquery); $i++)
 {
 if($i == 1)
 {
 echo 'select ' . trim($arrquery[$i]);
 }
 elseif($i &gt; 1)
 {
 $strx = trim($arrquery[($i-1)]);

 if(trim(substr($strx,-1)) != '(')
 {
 $stry = $stry . '

 select ' . trim($arrquery[$i]);
 }
 else
 {
 $stry = $stry.trim('select ' . trim($arrquery[$i]));
 }
 $strx = '';
 }
 }
 return $stry;
}
</code></pre>
Example:
<h2>Query before</h2>
<pre class="lang-none prettyprint-override"><code>Select xx from xx select xx,(select xx) from xx where y=' cc'
select xx from xx left join (select xx) where (select top 1 xxx from xxx) oder by xxx desc&quot;;
</code></pre>
<h2>Query after</h2>
<pre class="lang-none prettyprint-override"><code>select xx from xx

select xx,(select xx) from xx where y=' cc'

select xx from xx left join (select xx) where (select top 1 xxx from xxx) oder by xxx desc
</code></pre>

blocks|key|273173|text|你可以试试这段代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|273174|<?php
++++$str+=+"pg_id=2&parent_id=2&document&video";
++++$array+=+array();
++++parse_str($str,+$array);
++++print_r($array);
?>|code-block|syntax|javascript|273175|输出：|273176|Array
(
++++[pg_id]+=>+2
++++[parent_id]+=>+2
++++[document]+=>
++++[video]+=>
)|273177|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You can try this code:
<pre><code>&lt;?php
 $str = &quot;pg_id=2&amp;parent_id=2&amp;document&amp;video&quot;;
 $array = array();
 parse_str($str, $array);
 print_r($array);
?&gt;
</code></pre>
Output:
<pre><code>Array
(
 [pg_id] =&gt; 2
 [parent_id] =&gt; 2
 [document] =&gt;
 [video] =&gt;
)
</code></pre>

How can I turn a string below into an array?

<pre><code>pg_id=2&amp;parent_id=2&amp;document&amp;video 
</code></pre>

This is the array I am looking for,

<pre><code>array(
 'pg_id' =&gt; 2,
 'parent_id' =&gt; 2,
 'document' =&gt; ,
 'video' =&gt;
)
</code></pre>

Parse query string into an array

如何将下面的字符串转换为数组pg_id=2&parent_id=2&document&video 这就是我要找的数组，array(    'pg_id' => 2,    'parent_id' => 2,    'document' => ,    'video' =>)

问将查询字符串解析为数组
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