Answer Posted / sumit manchanda

<?php
$count=0;
echo "[";
for($i=1;$i<10;$i++){

if($i%3==0){
echo "$i";
echo "]";
echo "</br>";
$count++;
}else{
if($count==3){
echo "[";
$count=0;
}
$count=$count+1;
echo "$i";

}
}

?>

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