3v4l.org

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<?php $objs = [ ['value'=>2, 'key'=>'a'], ['value'=>3, 'key'=>'b'] ]; print_r($objs); $keys = array_column($objs, 'key'); $index = array_search('a', $keys); if ($index !== false) { $objs[$index]['value'] = 5; } print_r($objs);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.13
Array ( [0] => Array ( [value] => 2 [key] => a ) [1] => Array ( [value] => 3 [key] => b ) ) Array ( [0] => Array ( [value] => 5 [key] => a ) [1] => Array ( [value] => 3 [key] => b ) )
preferences:
85.95 ms | 408 KiB | 5 Q