Unzipping files with PHP

miseria said:

Found this on php.net

"If your PHP installation does not have the zip_open function, and you can't install it for whatever reason, you can use these functions instead, if the server has access to the "unzip" utility (most Linux systems do).
So far I have tested these only in Fedora Core 3.
Use at your own risk."

PHP:

<?php

function ShellFix($s)
{
  return "'".str_replace("'", "'\''", $s)."'";
}

function zip_open($s)
{
  $fp = @fopen($s, 'rb');
  if(!$fp) return false;
  
  $lines = Array();
  $cmd = 'unzip -v '.shellfix($s);
  exec($cmd, $lines);
  
  $contents = Array();
  $ok=false;
  foreach($lines as $line)  
  {
   if($line[0]=='-') { $ok=!$ok; continue; }
   if(!$ok) continue;
   
   $length = (int)$line;
   $fn = trim(substr($line,58));
   
   $contents[] = Array('name' => $fn, 'length' => $length);
  }
  
  return
   Array('fp'      => $fp,  
         'name'    => $s,
         'contents' => $contents,
         'pointer'  => -1);
}                          
function zip_read(&$fp)
{
  if(!$fp) return false; 
  
  $next = $fp['pointer'] + 1;
  if($next >= count($fp['contents'])) return false;
 
  $fp['pointer'] = $next;
  return $fp['contents'][$next];
}
function zip_entry_name(&$res)
{
  if(!$res) return false;
  return $res['name'];
}                          
function zip_entry_filesize(&$res)
{
  if(!$res) return false;
  return $res['length'];
}
function zip_entry_open(&$fp, &$res)
{
  if(!$res) return false;

  $cmd = 'unzip -p '.shellfix($fp['name']).' '.shellfix($res['name']);
  
  $res['fp'] = popen($cmd, 'r');
  return !!$res['fp'];  
}
function zip_entry_read(&$res, $nbytes)
{
  return fread($res['fp'], $nbytes);
}
function zip_entry_close(&$res)
{
  fclose($res['fp']);
  unset($res['fp']);
}
function zip_close(&$fp)
{
  fclose($fp['fp']);
}
?>

Hope it helps..

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