Online PHP editor | refs for 7B3jB

<?php function call_debug_backtrace($errno, $errstr) { static $call = 0; $call++; echo "call {$call}: {$errstr}\n"; $bt = debug_backtrace(); $args = $bt[1]["args"]; foreach ($args as $k => $v) { $n = $k + 1; echo "call {$call}: argument {$n} is '{$v}'\n"; $args[$k] = "altered {$call}:{$n}"; $bt2 = debug_backtrace(); if ($bt2[1]["args"][$k] === $args[$k]) { echo "call {$call}: updated argument {$n} to '{$args[$k]}'\n"; } } } set_error_handler("call_debug_backtrace"); function foo($a, stdClass $b, stdClass $c) { var_dump($a); var_dump($b); var_dump($c); } foo(1, 2, 3);