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<?php function changeNames($people) { foreach ($people as $key => $person) { $people[$key]['name'] = strtoupper($person['name']); } return $people; } $myPeople = [ ['name' => 'foo'], ['name' => 'bar'] ]; $myPeople = changeNames($myPeople); var_dump($myPeople);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
array(2) { [0]=> array(1) { ["name"]=> string(3) "FOO" } [1]=> array(1) { ["name"]=> string(3) "BAR" } }
preferences:
49.76 ms | 408 KiB | 5 Q