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<?php set_error_handler(function($errno, $errstr) { $bt = debug_backtrace(); var_dump($errstr); }); $arr = array(1, 2); usort($arr, function($a, $b) use ($arr) { trigger_error('test'); return $a > $b; });
Output for git.master, git.master_jit, rfc.property-hooks
string(4) "test" string(123) "usort(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero" string(4) "test"

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