<?php class TestClass { public function doIt() { echo 'done'; } } function is_instance_callable(array $definition) { return isset($definition[0], $definition[1]) && in_array($definition[1], get_class_methods($definition[0]) ?? [], true); } $callable = [TestClass::class, 'doIt', 'param' => 'myParam']; var_dump(is_instance_callable($callable));
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