Scrivere delle matrici su file csv

[Laurianti]

Non ho capito esattamente cosa intendi..

<?php
$rows = 4;
$cols = 15;

$matrix2 = array(
  array(2, 3, 4, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
  array(0, 0, 0, 0, 1, 2, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0),
  array(0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 0, 0, 0, 0, 0, 0),
  array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 0, 0, 0),
  array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 5)
);

$accumolo = '';

for($i = 0; $i <= $rows; $i++) {  
    for($j = 0; $j <= $cols; $j++) {  
            if($j==$cols) { 
                $pezzo=$matrix2[$i][$cols]; 
                $accumolo .= $pezzo; 
                if($i!=$rows){
                  $accumolo .= "\n";
                }
            } else { 
                $accumolo .= $matrix2[$i][$j].',';  
            } 
    }  
}

header("Content-type: text/csv");
header("Content-Disposition: attachment; filename=file.csv");
header("Pragma: no-cache");
header("Expires: 0");

echo $accumolo;
?>