- var_dump: documentation ( source)
- debug_backtrace: documentation ( source)
- set_error_handler: documentation ( source)
- trigger_error: documentation ( source)
- usort: documentation ( source)
<?php
set_error_handler(function($errno, $errstr) {
$bt = debug_backtrace();
var_dump($errstr);
});
$arr = array(1, 2);
usort($arr, function($a, $b) use ($arr) {
trigger_error('test');
return $a > $b;
});