php upload timeout problem

When we try to upload pictures with php through http we can't cross the 8mb barrier. Smaller pictures work fine but when we want to try bigger pictures it works ok till 8mb and then it stops.

We raised the upload limit in php.ini without success.

;;;;;;;;;;;;;;;;
; File Uploads ;
;;;;;;;;;;;;;;;;

; Whether to allow HTTP file uploads.
file_uploads = On

; Temporary directory for HTTP uploaded files (will use system default if not
; specified).
;upload_tmp_dir =

; Maximum allowed size for uploaded files.
upload_max_filesize = 20M


Suggestions would be welcome here.
Is there a php script that can handle big uploads till 50mb ?

 

 

 

 

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