/PHP/Function passing multiple arguments using 3 dots php

Function passing multiple arguments using 3 dots php

function concatenate($transform, ...$strings) {
    $string = '';
    foreach($strings as $piece) {
        $string .= $piece;
    }
    return($transform($string));
}

echo concatenate("strtoupper", "I'd ", "like ", 4 + 2, " apples");
// This would print:
// I'D LIKE 6 APPLES

Source: stackoverflow.com

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