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run code in 150+ php & hhvm versions
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<?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) { $array = $newValue; } $lookFor = array_shift($searchPath); if (is_array($array) && array_key_exists($lookFor, $array)) { deepReplace($searchPath, $newValue, $array[$lookFor]); } } print_r($data); deepReplace(array(null, "subelement1"), "newValue", $data); print_r($data);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
Array ( [element1] => Array ( [subelement1] => value [subelement2] => Array ( [sub21] => hello ) ) [element2] => Array ( [something] => this [subelement1] => awesome [subelement2] => Array ( [sub21] => world ) ) ) Array ( [element1] => Array ( [subelement1] => value [subelement2] => Array ( [sub21] => hello ) ) [element2] => Array ( [something] => this [subelement1] => awesome [subelement2] => Array ( [sub21] => world ) ) )