<?php
$arr = array(
array("A1","B1","C1"),
array("A2","B2","C2"),
array("A3","B3","C3")
);
foreach($arr as $row){
foreach($row as $el){
echo $el." ";
}
echo "\n";
}
echo "\n";
$n=3;
$m=3;
for($i=0; $i<$n; $i++){
for($j=0; $j<$m; $j++){
echo $arr[$i][$j]." ";
}
echo "\n";
}