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run code in 150+ php & hhvm versions
Bugs & Features
<?php $data = array('element1' => array('subelement1'=>'value','subelement2'=>array('sub21'=>'hello')), 'element2'=>array('something'=>'this','subelement1'=>'awesome','subelement2'=>array('sub21'=>'world'))); function deepReplace($searchPath, $newValue, &$array) { if (count($searchPath) == 0) return; /*else if (count($searchPath) == 1) { $array = $newValue; }*/ $lookFor = array_shift($searchPath); /*if ($lookFor === null) { foreach ($array as &$value) { if (is_array($value)) deepReplace($searchPath, $newValue, $value); } } else*/ if (is_array($array) && array_key_exists($lookFor, $array)) { deepReplace($searchPath, $newValue, $array[$lookFor]); } var_dump($searchPath); } //print_r($data); deepReplace(array("element1", "subelement1"), "newValue", $data); //print_r($data);
Output for 4.3.0 - 5.0.5, 5.1.1 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
array(0) { } array(1) { [0]=> string(11) "subelement1" }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/1ONPv on line 28
Process exited with code 255.