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@ 2015-08-28T12:47:47Z

<?php

function call_debug_backtrace() {
	$bt = debug_backtrace();
	$bt[1]["args"][0] = "altered";
}

function foo(&$a) {
	var_dump($a);
	call_debug_backtrace();
	var_dump($a);
}

$a = 1;
foo($a);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
debug_backtrace: documentation ( source)

preferences:dark modelive preview

29.88 ms | 402 KiB | 5 Q