$arr = array("a", "new", "advanced", "operating", "system", "for", "PC", "MAC", "and", "Linux");
$chunks = array_chunk($arr, 3);
for ($row = 0; $row < count($chunks); $row++) {
echo "\n--- Chunk : $row" . "\n";
for ($col = 0; $col < count($chunks[$row]); $col++)
echo $chunks[$row][$col] . "\n";
}
/*
run:
--- Chunk : 0
a
new
advanced
--- Chunk : 1
operating
system
for
--- Chunk : 2
PC
MAC
and
--- Chunk : 3
Linux
*/