Unzip a zip archive on a server with php -

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i've tryed ways automatically unzip files php of them failed:

1st variant

<?php function unzip($file){   $zip=zip_open(realpath(".")."/".$file);   if(!$zip) {return("unable proccess file '{$file}'");}   $e='';    while($zip_entry=zip_read($zip)) {    $zdir=dirname(zip_entry_name($zip_entry));    $zname=zip_entry_name($zip_entry);     if(!zip_entry_open($zip,$zip_entry,"r")) {$e.="unable proccess file '{$zname}'"; continue; }    if(!is_dir($zdir)) mkdirr($zdir,0777);     #print "{$zdir} | {$zname} \n";     $zip_fs=zip_entry_filesize($zip_entry);    if(empty($zip_fs)) continue;     $zz=zip_entry_read($zip_entry,$zip_fs);     $z=fopen($zname,"w");    fwrite($z,$zz);    fclose($z);    zip_entry_close($zip_entry);     }  zip_close($zip);  return $e; }  $file = 'file_name.zip'; echo unzip($file);

2nd variant

<?php $zip = zip_open("my_linkedin_groups_scrape_my_run_1_2015.zip"); if ($zip) { while ($zip_entry = zip_read($zip)) {   $fp = fopen("./".zip_entry_name($zip_entry), "w");   if (zip_entry_open($zip, $zip_entry, "r")) {     $buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));     fwrite($fp,"$buf");     zip_entry_close($zip_entry);    fclose($fp);   }  }  zip_close($zip); } ?>

3rd variant

<?php  // assuming file.zip in same directory executing script. $file = 'file.zip';  // absolute path $file $path = pathinfo(realpath($file), pathinfo_dirname);  $zip = new ziparchive; $res = $zip->open($file); if ($res === true) {   // extract path determined above   $zip->extractto($path);   $zip->close();   echo "woot! $file extracted $path"; } else {   echo "doh! couldn't open $file"; } ?>

for 3rd case output doh! couldn't open file.zip

what's wrong? missing?

seems problem write/read rights.
change rights testing purposes on 0777


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