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<?php $a = array_map(function($a) { return array_column($a, null); }, [['a' => 1], ['b' => 2]]); var_dump($a);
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 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array(2) { [0]=> array(1) { [0]=> int(1) } [1]=> array(1) { [0]=> 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(2) { [0]=> array(1) { [0]=> int(1) } [1]=> array(1) { [0]=> int(2) } }
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
array(2) { [0]=> array(0) { } [1]=> array(0) { } }
Output for 5.4.0 - 5.4.45
Fatal error: Call to undefined function array_column() in /in/Lr2S6 on line 4
Process exited with code 255.

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