Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

mike, do you know why function a return lower case string when browser does't support gzip/deflate compression ???

Because you call strtolower() on the string. The "a" output buffer handler is run without regard whether browser supports gzip content encoding.

hmm, this is for me odd, becouse to ob_gzhandler input is put strlower'ed string and:

output string ob_gzhandler ( input string )

1. when browser support gzip/deflate compression, ob_gzhandler return compressed input and send headers - this is ok.
2. when browser does't support gzip/deflate compression,
ob_gzhandler should return input string wihtout compression...
But it return different string to input string! Why ??

Mike, what is wrong in my reason ?

OK, I solved the proble. Corrent script:

<?
 function a($i,$m){
  $i=strtolower($i);
  $m=ob_gzhandler($i,$m);
  if($m!==false){$i=$m;}
  return($i);
 }
 ob_start('a');
?>
PAGE CONTENTS


But there are two issues with documentation:

1. http://php.net/manual/en/function.ob-gzhandler.php
There is not written what ob-gzhandler return boolean false if browser does't support gzip/deflate compression.
Without this sentence you may think that ob-gzhandler return uncompressed input string.
2. http://php.net/manual/en/function.ob-start.php
There is not written what if ob_start output_callback is a callable function and this function return boolean false, ob_start return original buffer.

/Edit/

1. ...
Without this sentence you may think that ob-gzhandler return (not compressed) input string.