Captcha Plugin - Disable zlib output compression?

i have installed the captcha Plugin 1.0 and the frontend was not displaying the image. However, i discovered from the PHP error log that:
"PHP Warning: ob_start() [<a href='ref.outcontrol'>ref.outcontrol</a>]: output handler 'ob_gzhandler' conflicts with 'zlib output compression' in [webroot]\includes\joomla.php on line 3997

so, i turned off zlib output compression and it is now working perfectly!

But i am wondering whether i can have zlib output compression enabled and at the same time use captcha plugin? (because zlib output compression is required by some other scrips)

any suggestions?

Thanks

PS: i am new PHP programming, so i don't really understand what is ob_gzhandler and zlib output compression.

This is very interesting feedback.. not many look at their php error logs.. this is great info.. however.. this is new and will need some time to be looked into..

ernestbut wrote:

i have installed the captcha Plugin 1.0 and the frontend was not displaying the image. However, i discovered from the PHP error log that:
"PHP Warning: ob_start() [<a href='ref.outcontrol'>ref.outcontrol</a>]: output handler 'ob_gzhandler' conflicts with 'zlib output compression' in [webroot]\includes\joomla.php on line 3997

so, i turned off zlib output compression and it is now working perfectly!

But i am wondering whether i can have zlib output compression enabled and at the same time use captcha plugin? (because zlib output compression is required by some other scrips)

any suggestions?

Thanks

PS: i am new PHP programming, so i don't really understand what is ob_gzhandler and zlib output compression.

also just found that on safe mode = On sites the GD library function fails because it cannot load the font file!

just to let you know..... my situation occurs when i have safe mode on!