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<?php $blah= array(array('a'=> 1, 'b' => array('inner' => 2))); function _test(&$test) { foreach ($test as $key => $value) { if (is_array($value) === false) continue; $clone = array(); $clone = array_merge($clone, $test); unset($clone[$key]['a']); if (is_array($value) === true){ _test($test[$key]); } } } _test($blah); var_dump($blah);
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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(1) { [0]=> array(2) { ["a"]=> int(1) ["b"]=> array(1) { ["inner"]=> int(2) } } }
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(1) { [0]=> array(2) { ["a"]=> int(1) ["b"]=> array(1) { ["inner"]=> int(2) } } }

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186.1 ms | 402 KiB | 210 Q