- var_export: documentation ( source)
- is_subclass_of: documentation ( source)
<?php
namespace foo;
class MyException extends \Exception {}
$class = '\\foo\\MyException';
echo "$class\n",
'1) ', var_export(is_subclass_of($class, "\\Exception"), true), "\n",
'2) ', var_export(is_subclass_of("\\foo\\MyException", "\\Exception"), true), "\n";