Compare data in two CSV files

[root@nabeelmoidu html]# cat compare.php

 
 
// Input of the format
// field1 in file1 (eg, 2446)
// field2,field1 in file2  (Nabeel, 2446)
 
$filename='file1.csv';
$handle = fopen("$filename", "r");
$ctr=0;
 
while (($read = fgetcsv($handle, 1000, ",")) !== FALSE){
    $num[$ctr]= (int)$read[0];
//    echo $num[$ctr]."
";
        $ctr = $ctr + 1;
}
 
$filename1='file2.csv';
$handle1 = fopen("$filename1", "r");
$ctr1=0;
     while (($rawname = fgetcsv($handle1, 1000, ",")) !== FALSE)
{    $ext[$ctr1]= (int)$rawname[0];
    $name[$ctr1]= $rawname[1];
//    echo $ext[$ctr1]."
";
       $ctr1 = $ctr1 + 1;
}
 
for ($n=0; $n <= $ctr1; $n++) { $match[$n]=1; }
 
for ($x=0; $x <= $ctr; $x++)
    {
    for ($y=0; $y <= $ctr1; $y++) {
            if ($num[$x]==$ext[$y]){$match[$y]=0;}
        else {};
    }
    }
 
for ($y=0; $y <= $ctr1; $y++) {
                if ($match[$y])
                        { echo $name[$y]." |  ".$ext[$y]."
";}
                else {};
    }
 
fclose($handle);
fclose($handle1);
?>