Online PHP editor | output for MVT85

@ 2018-01-20T03:17:00Z

<?php

$fruitpacks = [
  ['apples', 3],
  ['pears', 1],
  ['apples', 6],
  ['grapes', 22],
];

abstract class ⁇ {
  public static function ➕＝(&$maybeDefined, int $value) {
     $maybeDefined = ($maybeDefined ?? 0) + $value;
  }
}

$totals_by_name = [];
foreach ($fruitpacks as [$name, $amount]) {
  ⁇::➕＝($totals_by_name[$name], $amount);
}

var_dump($totals_by_name);

Output for 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 - 8.3.25, 8.4.1 - 8.4.12: array(3) { ["apples"]=> int(9) ["pears"]=> int(1) ["grapes"]=> int(22) }
Output for 7.0.0 - 7.0.33: Parse error: syntax error, unexpected ')', expecting :: (T_PAAMAYIM_NEKUDOTAYIM) in /in/MVT85 on line 17
Process exited with code 255.
Output for 5.6.0 - 5.6.40: Parse error: syntax error, unexpected '?' in /in/MVT85 on line 12
Process exited with code 255.

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