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<?php function addOrIncr(&$arr, $key, $value) { $arr[$key] = ($arr[$key] ?? 0) + $value; } $arr = ['foo' => 1]; $value = 10; $key = 'foo'; $arr[$key] = ($arr[$key] ?? 0) + $value; $key = 'bar'; $arr[$key] = ($arr[$key] ?? 0) + $value; var_dump($arr);
Output for 7.0.0 - 7.0.20, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(2) { ["foo"]=> int(11) ["bar"]=> int(10) }
Output for 5.4.8 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/ke0po on line 4
Process exited with code 255.
preferences:
235.57 ms | 402 KiB | 251 Q