Endless loop while deleting a line

[robertaccettura]

I hve this little function to delete any line in a text file "maildatabasefile" that contains the string "$ticket"

function deleteaddress($ticket){
	$filename = "$this->maildatabasefile";
	$file = file("$filename");
	$i = 0;
	$tmp = "";
	while ($file[$i]) {
   	 	if (!stristr($file[$i], $ticket)){
     	   $tmp .= $file[$i];
   			 $i++;
			 }
	}
	$file = fopen("$filename", "w");
	fputs($file, $tmp);
	fclose($file);
	return 1;
}

It seems to never end though.

Why is it broken?

Thanks

[hand]

function deleteaddress($ticket){
    $filename = "$this->maildatabasefile";
    $file = file("$filename");
    $i = 0;
    $tmp = "";
    while ($file[$i]) {
            if (!stristr($file[$i], $ticket)){
               $tmp .= $file[$i];
            }
            $i++;
    }
    $file = fopen("$filename", "w");
    fputs($file, $tmp);
    fclose($file);
    return 1;
}

[devinemke]

what about something like this:

function deleteaddress ($filename, $ticket)
{

$file = file ($filename);
foreach ($file as $key => $value)
{
if (!stristr ($value, $ticket)){$file[$key] = '';}
}
$file_string = implode ("\n", $file);    

$fp = fopen ($filename, "w");
fwrite ($fp, $file_string);
fclose ($fp);

}

[robertaccettura]

Thanks!