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<?php $test = [ 'key1' => ' value1', ]; function clean (&$value) { $value = trim ($value); return $value; } var_dump(array_filter ($test, 'clean')); var_dump($test);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Warning: clean(): Argument #1 ($value) must be passed by reference, value given in /in/BNv9I on line 12 array(1) { ["key1"]=> string(9) " value1" } array(1) { ["key1"]=> string(9) " value1" }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
array(1) { ["key1"]=> string(9) " value1" } array(1) { ["key1"]=> string(9) " value1" }
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28
array(1) { ["key1"]=> string(6) "value1" } array(1) { ["key1"]=> string(6) "value1" }
preferences:
98.44 ms | 1647 KiB | 4 Q