blocks|key|1571068|text|也许像这样的东西应该可以做到。PHP有一个名为callback的“类型”，它可以是一个闭包(从PHP5.3开始)、包含对象的函数或数组的名称以及要调用的方法。这些回调可以用call_user_func()调用|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1571069|function+getMean($callback){
++++$allUsers+=++getAllUsers();
++++$sum+=+0;

++++foreach+($allUsers++as+$currentUser+){
++++++++$sum+=%2B+(call_user_func($callback,+$currentUser['CONSUMER_ID'],+5,+8))/(8-5);
++++}

++++return+$sum;
}|code-block|syntax|javascript|1571070|entityMap^0|2E|G|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|$]]

Perhaps something like this should do it. PHP has a "type" called callback, which can be a closure (as of PHP 5.3), name of a function or array containing object and the method to call. These callbacks can be called with <code>call_user_func()</code>

<pre><code>function getMean($callback){
 $allUsers = getAllUsers();
 $sum = 0;

 foreach ($allUsers as $currentUser ){
 $sum =+ (call_user_func($callback, $currentUser['CONSUMER_ID'], 5, 8))/(8-5);
 }

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

blocks|key|5238624|text|你需要PHP5.3来做这件事。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5238625|function+getMean($function){
++++$allUsers+=++getAllUsers();
++++$sum+=+0;

++++foreach+($allUsers++as+$currentUser+){

++++++++$sum+%2B=+($function($currentUser['CONSUMER_ID'],+5,+8))/(8-5);
++++}
++++return+$sum;
}

getMean(function($consumer_id,+$five,+$eight)+{
++++return+$consumer_id;
});|code-block|syntax|javascript|5238626|如果你运行PHP5.3-(低于5.3)，你需要在使用call_user_func()或call_user_func_array()函数的同时使用回调函数(documentation+is+here)。|offset|length|style|CODE|5238627|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/call_user_func|1|http://php.net/call_user_func_array|2|http://php.net/callback^0|0|0|Q|G|17|M|Q|G|0|17|M|1|25|L|2|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@$I|11|J|12|K|L]|$I|13|J|14|K|L]]|9|@$I|15|J|16|1|17]|$I|18|J|19|1|1A]|$I|1B|J|1C|1|1D]]|A|$]]|$1|M|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]|U|$5|P|Q|R|A|$S|V]]|W|$5|P|Q|R|A|$S|X]]]]

You need PHP 5.3 to do that natively.

<pre><code>function getMean($function){
 $allUsers = getAllUsers();
 $sum = 0;

 foreach ($allUsers as $currentUser ){

 $sum += ($function($currentUser['CONSUMER_ID'], 5, 8))/(8-5);
 }
 return $sum;
}

getMean(function($consumer_id, $five, $eight) {
 return $consumer_id;
});
</code></pre>

I you run PHP 5.3- (lower than 5.3), you need to use a callback (<a href="http://php.net/callback" rel="nofollow">documentation is here</a>) along with the <a href="http://php.net/call_user_func" rel="nofollow"><code>call_user_func()</code></a> or <a href="http://php.net/call_user_func_array" rel="nofollow"><code>call_user_func_array()</code></a> function.

blocks|key|5238488|text|只要function($currentUser['CONSUMER_ID'],+5,+8)返回一些东西，您就可以这样做|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5238489|entityMap^0|2|17|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|$]]

you can do that as long as <code>function($currentUser['CONSUMER_ID'], 5, 8)</code> returns something

blocks|key|3638191|text|看起来PHP的Eval函数就是您要找的。向getMean函数传递一个字符串，然后将该行更改为$sum+=%2B+(eval($param)+.....)|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3638192|然而，安全性是一个问题，因为任何函数都可以传递。|3638193|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/function.eval.php^0|7|4|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

It looks like the PHP <a href="http://php.net/manual/en/function.eval.php" rel="nofollow">Eval</a> function is what you are looking for. Pass the getMean function a string, and then change the line to have $sum =+ (eval($param) .....)

Security is a problem though because any function can be passed.

blocks|key|3638229|text|将函数另存为变量。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3638230|$function+=+function($param1){+//code+here+}|code-block|syntax|javascript|3638231|并将其作为参数传递给其他函数。|3638232|function+getMean($function)
{
++//code+here
++$sum+%2B=+$function($param);
}|3638233|编辑|3638234|PHP.net+Manual+-+Variable+Functions|offset|length|3638235|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/functions.variable-functions.php^0|0|0|0|0|0|0|Z|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|13|8|@]|9|@$O|14|P|15|1|16]]|A|$]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

Save the function as a variable.

<pre><code>$function = function($param1){ //code here }
</code></pre>

and pass it to your other function as a parameter.

<pre><code>function getMean($function)
{
 //code here
 $sum += $function($param);
}
</code></pre>

[edit]

<a href="http://php.net/manual/en/functions.variable-functions.php" rel="nofollow">PHP.net Manual - Variable Functions</a>

blocks|key|3638260|text|你在搜索anonymous+functions吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3638261|费利克斯|3638262|entityMap|0|LINK|mutability|MUTABLE|url|http://de2.php.net/manual/en/functions.anonymous.php^0|4|J|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

are you searching for <a href="http://de2.php.net/manual/en/functions.anonymous.php" rel="nofollow">anonymous functions</a>?

Felix

blocks|key|2139753|text|如果你想在php+<+5.3中动态创建一个函数，那么你不得不使用create_function。由于你如何使用这个函数，除了为array_map，array_walk或做简单计算或基本文本处理的事情创建简单的函数之外，使用它做任何事情都是愚蠢的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2139754|如果您正在做比这更复杂的事情，那么简单地将函数定义为普通函数，然后按照其他人的建议在call_user_func或call_user_func_array中使用它，会容易得多，也不会让人头疼。|2139755|请勿使用eval+:-)|2139756|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/function.create-function.php^0|W|F|1R|9|21|A|W|F|0|0|16|E|1L|K|0|4|4|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]|$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@$9|Y|A|Z|1|10]]|E|$]]|$1|F|3|G|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]]]

If you want to dynamically create a function in php &lt; 5.3 then youre stuck with using <a href="http://php.net/manual/en/function.create-function.php" rel="nofollow"><code>create_function</code></a>. Becuase of how you use this function its really insane to use it for anything but but creating simple function for <code>array_map</code>,<code>array_walk</code> or things that do simple calculations or basic text processing.

If youre doing anything more complex than that its much easier and less of a headache to simply define the function as normal and then use it with <code>call_user_func</code> or <code>call_user_func_array</code> as others have suggested.

DO NOT USE <code>eval</code> :-)

I am trying to create a PHP function that takes another PHP function as input. Here is an example:

<pre><code>function getMean(function){
 $allUsers = getAllUsers();
 $sum = 0;

 foreach ($allUsers as $currentUser ){

 $sum =+ (function($currentUser['CONSUMER_ID'], 5, 8))/(8-5);

 }

}
</code></pre>

Create PHP function that takes function as a parameter

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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我正在尝试创建一个PHP函数，它接受另一个PHP函数作为输入。下面是一个示例：function getMean(function){    $allUsers =  getAllUsers();    $sum = 0;    foreach ($allUsers  as $currentUser ){        $sum =+ (function($currentUser['CONSUMER

问创建以function作为参数的PHP函数
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