<?php $arr=[1,2,3,4,6,7,8,10,11,12,13,14,16,17,18]; $block = array_chunk($arr,3); print_r($block); $blockNew[] = array_slice($arr, 0, 3, true); $blockNew[] = array_slice($arr, 4, 3, true); $blockNew[] = array_slice($arr, 7, 3, true); print_r($blockNew);
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