Someone

<?  function sta(){    global $started;    $started = microtime();  }  function sto(){    global $started;    echo (microtime() - started) . ' milliseconds' . "\n";  }  $in = '//////////////////////////////////////////////////////////////////////////////////////////////////////////////';  $tmp = $in;  sta();  while( strstr($tmp, "//") ){ $tmp = str_replace('//', '/', $tmp); }  sto();  echo $tmp . "\n";  $tmp = $in;  sta();  $tmp = preg_replace('@/{2,}@','/',$tmp, -1);  sto();  echo $tmp . "\n";/*Output:0.679259 milliseconds/0.679554 milliseconds/Conclusion:It does not seem to matter...For PHP 4.4.4*/?>