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<?php function prune_leaves($array) { foreach($array as $k => $v) { if ($v === null) unset($array[$k]); if (is_array($v)) prune_leaves($v); } return $array; } $test1 = ['a' => 123, 'b' => ['c' => null]]; var_dump(prune_leaves($test1));
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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 - 8.3.6
array(2) { ["a"]=> int(123) ["b"]=> array(1) { ["c"]=> NULL } }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/7Y5VH on line 11
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/7Y5VH on line 11
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/7Y5VH on line 11
Process exited with code 255.
preferences:
212.34 ms | 401 KiB | 312 Q