blocks|key|841870|text|因此，修改我的答案来真正解决您的问题，您可以使用嵌套的foreach循环这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|841871|<?php

$a1+=+array(
++++'name'+=>+array(+0+=>+'Some+message+to+display1'),
++++'test'+=>+array(+0+=>+'Some+message+to+display2'),
++++'kudos'+=>+array(+0+=>+'Some+message+to+display3'),
++++);

$final+=+"";
foreach($a1+as+$innerarray){
++++foreach($innerarray+as+$message){
++++++++$final+.=+$message.",+";
++++}
}

echo+substr($final,0,-2);
?>|code-block|syntax|javascript|841872|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|$]]

so, revising my answer to actually address your question, you could do it with nested foreach loops like this:

<pre><code>&lt;?php

$a1 = array(
 'name' =&gt; array( 0 =&gt; 'Some message to display1'),
 'test' =&gt; array( 0 =&gt; 'Some message to display2'),
 'kudos' =&gt; array( 0 =&gt; 'Some message to display3'),
 );

$final = "";
foreach($a1 as $innerarray){
 foreach($innerarray as $message){
 $final .= $message.", ";
 }
}

echo substr($final,0,-2);
?&gt;
</code></pre>

blocks|key|840579|text|在得到每个数组之后循环遍历数组和implode()。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|840580|$bigArray+=+array();
foreach($firstArray+as+$secondArray){
++++if(is_array($secondArray)){
++++++++$bigArray+=+array_merge($bigArray,+$secondArray);
++++}
}
$commaList+=+implode(",",+$bigArray);|code-block|syntax|javascript|840581|entityMap^0|G|9|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Loop through the arrays and <code>implode()</code> after you've got each array.

<pre><code>$bigArray = array();
foreach($firstArray as $secondArray){
 if(is_array($secondArray)){
 $bigArray = array_merge($bigArray, $secondArray);
 }
}
$commaList = implode(",", $bigArray);
</code></pre>

blocks|key|1219673|text|可以使用implode连接值，使用array_map提取值：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1219674|//+this+should+be+your+array
$youArray+=+array();+
//+return+first+elements
$values+=+array_map(function($item)+{+return+$item[0];+},+$youArray);+
//+echo+joined+values
echo+implode(',',+$values);|code-block|syntax|javascript|1219675|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/function.implode.php|1|http://php.net/manual/en/function.array-map.php^0|4|7|H|9|4|7|0|H|9|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]]]]

You can use <a href="http://php.net/manual/en/function.implode.php" rel="nofollow"><code>implode</code></a> to join values and <a href="http://php.net/manual/en/function.array-map.php" rel="nofollow"><code>array_map</code></a> to extract them:

<pre><code>// this should be your array
$youArray = array(); 
// return first elements
$values = array_map(function($item) { return $item[0]; }, $youArray); 
// echo joined values
echo implode(',', $values);
</code></pre>

blocks|key|1219617|text|$array+=+array("some+text","other+text");
$impl+=+implode(",",+$array);
echo+$impl;|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1219618|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>$array = array("some text","other text");
$impl = implode(",", $array);
echo $impl;
</code></pre>

blocks|key|840600|text|implode适用于一维数组，但是您有一个2D数组，这将需要更多的工作。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|840601|您可以使用array_map来扁平数组。|840602|$flatArray+=+array_map(function($a){
++++//+I+implode+here+just+in+case+the+arrays
++++//+have+more+than+one+element,+if+it's+just+one
++++//+you+can+return+'$a[0];'+instead
++++return+implode(',',+$a);
},+$array);

echo+implode(',',+$flatArray);|code-block|syntax|javascript|840603|entityMap^0|0|7|0|5|9|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

<code>implode</code> works on 1D arrays, but you have a 2D array, this will take a bit more work.

You can use <code>array_map</code> to flatten the array

<pre><code>$flatArray = array_map(function($a){
 // I implode here just in case the arrays
 // have more than one element, if it's just one
 // you can return '$a[0];' instead
 return implode(',', $a);
}, $array);

echo implode(',', $flatArray);
</code></pre>

blocks|key|1697884|text|这适用于您的数组，并且应该适用于n级深的数组：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1697885|$array+=+array(
++++'name'+=>+array('Some+message+to+display1'),
++++'test'+=>+array('Some+message+to+display2'),
++++'kudos'+=>+array('Some+message+to+display3')
);

$mystr+=++multi_join($array);
while+(substr($mystr,+-1)+==+',')+{
++++$mystr+=+substr($mystr,+0,+-1);
}
echo+$mystr;

function+multi_join($value)+{
++++$string+=+'';

++++if+(is_array($value))+{
++++++++foreach+($value+as+$el)+{
++++++++++++$string.=+multi_join($el);
++++++++}
++++}+else+{
++++++++$string.=+$value.',';
++++}

++++return+$string;
}|code-block|syntax|javascript|1697886|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 works for your array and should work for arrays that are n levels deep:

<pre><code>$array = array(
 'name' =&gt; array('Some message to display1'),
 'test' =&gt; array('Some message to display2'),
 'kudos' =&gt; array('Some message to display3')
);

$mystr = multi_join($array);
while (substr($mystr, -1) == ',') {
 $mystr = substr($mystr, 0, -1);
}
echo $mystr;

function multi_join($value) {
 $string = '';

 if (is_array($value)) {
 foreach ($value as $el) {
 $string.= multi_join($el);
 }
 } else {
 $string.= $value.',';
 }

 return $string;
}
</code></pre>

blocks|key|841955|text|对于特定示例数据来说，最简单的方法是访问数据的0列并对其进行内爆。(演示)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|841956|echo+implode(',+',+array_column($array,+0));|code-block|syntax|javascript|841957|下面是添加到这个堆中的一些附加技术..。|841958|重新索引第一级，因为splat运算符不喜欢关联键，然后合并未打包的子数组，然后内爆。|ordered-list-item|841959|使用array_reduce()迭代第一个级别并从每个子数组中提取第一个元素，在不使用implode()的情况下按需要进行划界。|841960|代码：(演示)|841961|$array+=+[
++++'name'+=>+['Some+message+to+display1'],
++++'test'+=>+['Some+message+to+display2'],
++++'kudos'+=>+['Some+message+to+display3']
];

echo+implode(',+',+array_merge(...array_values($array)));

echo+"\n---\n";

echo+array_reduce($array,+function($carry,+$item)+{return+$carry+.=+($carry+?+',+'+:+'')+.+$item[0];+},+'');|841962|输出：|841963|Some+message+to+display1,+Some+message+to+display2,+Some+message+to+display3
---
Some+message+to+display1,+Some+message+to+display2,+Some+message+to+display3|841964|第一种技术将容纳子数组中的多个元素，第二种技术不会确认每个子数组中有多个“消息”。|841965|entityMap|0|LINK|mutability|MUTABLE|url|https://3v4l.org/cftDD|1|https://3v4l.org/28XNI^0|N|1|Y|2|0|0|0|0|0|2|E|17|9|0|4|2|1|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1B|8|@$9|1C|A|1D|B|C]]|D|@$9|1E|A|1F|1|1G]]|E|$]]|$1|F|3|G|5|H|7|1H|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1I|8|@]|D|@]|E|$]]|$1|M|3|N|5|O|7|1J|8|@]|D|@]|E|$]]|$1|P|3|Q|5|O|7|1K|8|@$9|1L|A|1M|B|C]|$9|1N|A|1O|B|C]]|D|@]|E|$]]|$1|R|3|S|5|6|7|1P|8|@]|D|@$9|1Q|A|1R|1|1S]]|E|$]]|$1|T|3|U|5|H|7|1T|8|@]|D|@]|E|$I|J]]|$1|V|3|W|5|6|7|1U|8|@]|D|@]|E|$]]|$1|X|3|Y|5|H|7|1V|8|@]|D|@]|E|$I|J]]|$1|Z|3|10|5|6|7|1W|8|@]|D|@]|E|$]]|$1|11|3|-4|5|6|7|1X|8|@]|D|@]|E|$]]]|12|$13|$5|14|15|16|E|$17|18]]|19|$5|14|15|16|E|$17|1A]]]]

Simplest for your specific sample data would be to access the <code>0</code> column of data and implode that. (<a href="https://3v4l.org/cftDD" rel="nofollow noreferrer">Demo</a>)
<pre><code>echo implode(', ', array_column($array, 0));
</code></pre>
<hr />
Here are a couple of additional techniques to add to this heap...
<ol>
<li>Reindex the first level because the splat operator doesn't like associative keys, then merge the unpacked subarrays, and implode.
</li>
<li>Use <code>array_reduce()</code> to iterate the first level and extract the first element from each subarray, delimiting as desired without the use of <code>implode()</code>.
</li>
</ol>
Codes: (<a href="https://3v4l.org/28XNI" rel="nofollow noreferrer">Demo</a>)
<pre><code>$array = [
 'name' =&gt; ['Some message to display1'],
 'test' =&gt; ['Some message to display2'],
 'kudos' =&gt; ['Some message to display3']
];

echo implode(', ', array_merge(...array_values($array)));

echo &quot;\n---\n&quot;;

echo array_reduce($array, function($carry, $item) {return $carry .= ($carry ? ', ' : '') . $item[0]; }, '');
</code></pre>
Output:
<pre><code>Some message to display1, Some message to display2, Some message to display3
---
Some message to display1, Some message to display2, Some message to display3
</code></pre>
The first technique will accommodate multiple elements in the subarrays, the second will not acknowledge more than one &quot;message&quot; per subarray.

I am wondering how to: 

<ul>
<li>Make comma-separated list</li>
<li>Strip last comma from list</li>
</ul>

Here's an array example:

<pre><code>Array
(
 [name] =&gt; Array
 (
 [0] =&gt; Some message to display1
 )
 [test] =&gt; Array
 (
 [0] =&gt; Some message to display2
 )
 [kudos] =&gt; Array
 (
 [0] =&gt; Some message to display3
 )

)
</code></pre>

I want to display it like this:

Comma-List: <code>Some message to display1, Some message to display2, Some message to display3</code>

Comma separated list from array

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想知道如何：创建逗号分隔列表从列表中去掉最后逗号下面是一个数组示例：Array(    [name] => Array        (            [0] => Some message to display1        )    [test] => Array        (            [0] => Some message to display2        

问逗号分隔列表与数组
EN

回答 7

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