PHP Salt

	$wFile = "test.cache";
	$ary = psCacheRead($wFile);

	if ($ary == false)
	  {
	  print"* Cache Expired\r\n";

	  $d['gallardo'] = "green";
	  $d['yellow'] = "yellow";

	  psCacheWrite($d,$wFile);
	  }

function psCacheRead($cFile, $cTime=3600)
{
	//print"* psCacheRead()\r\n";
	$res = false;

	if (file_exists($cFile) == true)
	  {
	  //print"* psCacheRead(file_exists)\r\n";
	  $cache = unserialize(psFileGetContents($cFile));
	  // is it expired?
	  $now = time();
	  $expTime = $cache['ts'] + $cTime;
	  if ( $expTime  > $now )
	    {
	    //print"* psCacheRead(cache_valid)\r\n";
	    if ( $cache['z'] < 1 )
	      {
	      $res = $cache['data'];
	      }
	    else
	      {
	      $res = unserialize(gzuncompress($cache['data']));
	      }

	    }
	  }

	return $res;
}