- array_slice: documentation ( source)
- print_r: documentation ( source)
- floor: documentation ( source)
<?php
$campaignIds = array(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17);
$limit=3;
$blocksCount = floor(count($campaignIds) / $limit);echo $blocksCount.PHP_EOL;
for ($i = 0; $i < $blocksCount; $i++) {echo $i.' - '. $blocksCount * $i .PHP_EOL;
print_r((array_slice($campaignIds, $blocksCount * $i, $limit)));
}