- var_dump: documentation ( source)
- function_exists: documentation ( source)
- strlen: documentation ( source)
<?php
namespace foo;
var_dump(function_exists('foo\strlen'));
var_dump(strlen('x'));
var_dump(function_exists('foo\strlen'));
if (true) {
function strlen($x) { return 42; }
var_dump(function_exists('foo\strlen'));
}
var_dump(strlen('x'));