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@ 2018-12-15T08:33:12Z

<?php

$arr = [
    '1',
    '2',
    '3',
    '4',
];

foreach ($arr as &$v) {
    $v++;
}

foreach ($arr as $v) {
    $v++;
}

print_r($arr);

Output
Performance
VLD
References
Branches

print_r: documentation ( source)

preferences:dark modelive previewkey bindings

95.17 ms | 1935 KiB | 5 Q