How to dynamically create methods in php

php dynamic creation method: 1. Create a PHP sample file; 2. Create conditional statements through "if (count($_POST) > 0) {...}"; 3. Through "create_function" ()" statement can dynamically create a method.

#The operating environment of this article: Windows7 system, PHP7.1, Dell G3 computer.

How to dynamically create methods in php?

How to dynamically create functions during PHP runtime

General language functions must be defined at runtime, and PHP supports dynamically creating functions at runtime, as follows It is a simple example that creates functions according to different conditions during exercise $a

<?php
if (count($_POST) > 0) {
  $prepped = create_function(&#39;$a&#39;, &#39;return trim($_POST[$a]);&#39;);
}
elseif (count($_GET) > 0) {
  $prepped = create_function(&#39;$a&#39;, &#39;return strtoupper($_GET[$a]);&#39;);
}
else {
  $prepped = create_function(&#39;$a&#39;, &#39;return false;&#39;);
}echo $prepped(&#39;file&#39;);
?>

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