3v4l.org

run code in 500+ PHP versions simultaneously
<?php $path = "['parent']['son']"; $_SESSION['parent']['son'] = "test"; $arr = explode("']['", $path); $ret = $_SESSION; foreach($arr as $val){ $key = str_replace(["'", "]", "["], "", $val); $ret = $ret[$key]; } Var_dump($ret);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
string(4) "test"

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28.49 ms | 1137 KiB | 7 Q