troubleshooting Question

How to make ZipArchive work as I want

Avatar of Richard Korts
Richard KortsFlag for United States of America asked on
* zipped filesPHP
1 Comment1 Solution50 ViewsLast Modified:
I have this code to create a zip file.

$path = "zips/z" . $pid . ".zip";
$dels = array();
$nd = 0;
if ($zip->open($path, ZipArchive::CREATE) === TRUE)
    // Add files to the zip file
	for ($i = 0; $i < $ns; $i++) {
		$typ = substr($fs[$i],0,2);
		if($typ == "NP" || $typ == "NT" || $typ == "RU" || $typ == "TR") {
			$dels[$nd] = $fs[$i];
			$str = "../pselsumms/" . $fs[$i];
			$ctfile = "temp/" . $fs[$i];
			copy ($str, $ctfile);
		} else {
    // All files are added, so close the zip file.
	// delete temp files here
	/*if ($nd != 0) {
		for ($j = 0; $j < $nd; $j++) {
			$dfile = "temp/" . $dels[$i];
			unlink ($dfile);
		}	*/
	// download
	header('Content-type: application/force-download'); 
    header('Content-Transfer-Encoding: Binary'); 
    header('Content-length: ' . filesize($path)); 
    header('Content-disposition: attachment; filename=' . basename($path)); 

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It appears to work fine, except when the name of the zip file already exists (from an earlier time).

For example, if $pid is 3512 and file zips/ already exists, it does not overwrite the existing file, it just changes the date, but the content is as before, NOT the new content. I could of course write code to insure a unique name, based on what is already there, but why is that necessary.

FYI, I tried php unlink on the file, no dice, same thing happens.

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