ZipArchive extraction - single file

Question

I have the following code:

$ipaFile= '/path/file.ipa';
$iconFilePath = "Payload/myapp.app/[email protected]"; // the pathway to my image file if the ipa file is unzipped.
$iconFile = "[email protected]";
$iconSaveFile = '/path/';

$zip = new ZipArchive();

if ($zip->open($ipaFile) === TRUE) {
    if($zip->locateName($iconFilePath) !== FALSE) {

     $zip->extractTo($iconSaveFile, $iconFile);

    }
}

My purpose is to dive into this zipped file and only pull out an image file. The code as is creates a a new image file in the directory I want it to go into (The file it creates has the right name and extension, but it is blank, 0 bytes). If I change $iconFile to iconFilePath then PHP correctly extracts the whole pathway. At the end of the pathway is the file (only the single file is extracted) I want, and it is correctly extracted. However, I don't want the folders preceding the file to be extracted, just the one file.

SO, in summary, I can correctly extract the entire zip archive, I can correctly extract the single file, but the file pathway to get to the file is also extracted, but I CANNOT correctly extract the single file all by itself.

I've done lots of searching on it and I can't spot my error. Thanks for your help.

Answer 1

ZipArchive::extractTo() extracts the whole folder structure into the filesystem; you should use ZipArchive::getFromName() instead. According to the documentation, it's what you're looking for:

Returns the entry contents using its name

$ipaFile= '/path/file.ipa';
// the pathway to my image file if the ipa file is unzipped.
$iconFilePath = "Payload/myapp.app/[email protected]";
$iconFile = "[email protected]";
$iconSaveFile = '/path/';

$zip = new ZipArchive();

if ($zip->open($ipaFile) === true) {
    if ($iconData = $zip->getFromName($iconFilePath)) {
        file_put_contents("$iconSaveFile$iconFile", $iconData);
    }
}