<?php function g($name, array $vars) { if (!array_key_exists($name, $vars)) { trigger_error('ss', E_USER_NOTICE); } return $name; } function f(&$v) { $v = 5; } $foo = null; $name = 'foo'; call_user_func_array('f', array(&${g($name, get_defined_vars())})); var_dump($foo);
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