- array_map: documentation ( source)
- var_dump: documentation ( source)
- in_array: documentation ( source)
<?php
$rc = new ReflectionClass(Closure::class);
$methodNames = array_map(function ($m) {
return $m->getName();
}, $rc->getMethods());
var_dump(in_array('__invoke', $methodNames));
var_dump($rc->hasMethod('__invoke'));