String2Int

teste1.php

<?php
$data = "abc def ";
echo $strlen = strlen( $data );
echo "<br/>";
echo $c = $strlen/3; 
echo "<br/>";
echo $w = ceil( $c );
echo "<br/>";
echo $h = ceil( sqrt( $w /3 ) );
echo "<br/>";

$i=0;
for($x=0; $x<$w; $x++){
   for($y=0; $y<$h; $y++){
       echo "[ ".$x.":".$y."( ".ord($data{$i}).",".ord($data{$i+1}).",".ord($data{$i+2})." ) ]";
       echo $y==$h?"<br/>":"";
       $i+=3;
   }
}