File exists but getting warning of failed to open stream: No such file or directory

<?php
$arch_filename = "myzipx.zip";
$dest_dir = "./dest";
if (!is_dir($dest_dir)) {
    if (!mkdir($dest_dir, 0755, true))
        die("failed to make directory $dest_dirn");
}
$zip = new ZipArchive;
if (!$zip->open($arch_filename))
    die("failed to open $arch_filename");

for ($i = 0; $i < $zip->numFiles; ++$i) {
    $path = $zip->getNameIndex($i);
    $ext = pathinfo($path, PATHINFO_EXTENSION);
    if (!preg_match('/(?:pdf)/i', $ext))
        continue;
    $dest_basename = pathinfo($path, PATHINFO_BASENAME);
    echo $path, PHP_EOL;

    copy("$path", "$dest_dir/{$dest_basename}");
}

$zip->close();
?>

A strange thing happend as this code worked only for 15 min now throwing warnings

( ! ) Warning: copy(myzipx/x/x.pdf): failed to open stream: No such file or directory in C:wamp64wwwzip_exxzip_img.php on line 21

But the file exists and echoing the correct file name. Don’t understand what seems to be the problem .. Any help is appreciated.

Answer

Your try with copy() was the right thing. Unlike ZipArchive::extractTo() (which extract and create also the sub folders in the destination), the method copy() just copy/extract the specified file from the archive to the destination.

This example should work:

$archive = "testarchive.zip";
$dest_dir = "./dest";
if (!is_dir($dest_dir)) {
    if (!mkdir($dest_dir, 0755, true)) die("failed to make directory $dest_dirn");
}
$zip = new ZipArchive;
if (!$zip->open($archive)) die("failed to open $archive");

for($i = 0; $i < $zip->numFiles; $i++) {
    $file_name = $zip->getNameIndex($i);
    $file_info = pathinfo($file_name);
    $file_ext = pathinfo($file_name, PATHINFO_EXTENSION);
    if (preg_match('/pdf/i', $file_ext)) {
        copy("zip://".$archive."#".$file_name, $dest_dir.'/'.$file_info['basename']);
    }
}                  
$zip->close();

Testarchiv structure:

xxxxx@xxxxxx:~/Documents$ tree testarchive
testarchive
└── test
    └── blubb
        └── test.pdf

The folder testarchive is then compressed to testarchive.zip.

After running code above:

xxxxx@xxxxxx:~/Documents$ tree dest
dest
└── test.pdf