3v4l.org

run code in 300+ PHP versions simultaneously
<?php $e = array('a' => array(1),'b' =>array(1)); foreach($e as $name => $arr) { if ($name == 'b'){ $e[$name] = adder($arr); } } var_dump($e); function adder($carr) { $carr["stuff"] = array("123"); return $carr; // should show array $e with new array added to 'b' }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array(2) { ["a"]=> array(1) { [0]=> int(1) } ["b"]=> array(2) { [0]=> int(1) ["stuff"]=> array(1) { [0]=> string(3) "123" } } }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(2) { ["a"]=> array(1) { [0]=> int(1) } ["b"]=> array(2) { [0]=> int(1) ["stuff"]=> array(1) { [0]=> string(3) "123" } } }

preferences:
166.22 ms | 402 KiB | 187 Q