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If you’ve ever worked with JavaScript, you might be well aware of this feature. So basically, from PHP 7.4, you would be able to unpack arrays into another array using spread operator [...]. Pre PHP 7.4, if you want to merge two arrays, you would need to use methods like array_merge. Take this for example. <?php // Pre PHP 7.4 $array = ['foo', 'bar']; $result = array_merge($array, ['baz']); print_r($result); // Array([0] => baz [1] => foo [2] => bar) But from PHP 7.4, you can achieve above u...