How to dynamically create functions when php is running, php dynamically create functions_PHP tutorial

How to dynamically create functions when php is running, php dynamically create functions

The example in this article describes the method of dynamically creating functions when php is running. Share it with everyone for your reference. The specific analysis is as follows:

General language functions must be defined at runtime, and PHP supports dynamic creation of functions at runtime. The following is a simple example to create a function $a according to different conditions during exercise

<&#63;php
if (count($_POST) > 0) {
  $prepped = create_function('$a', 'return trim($_POST[$a]);');
}
elseif (count($_GET) > 0) {
  $prepped = create_function('$a', 'return strtoupper($_GET[$a]);');
}
else {
  $prepped = create_function('$a', 'return false;');
}echo $prepped('file');
&#63;>

I hope this article will be helpful to everyone’s PHP programming design.