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Top Forums Shell Programming and Scripting Perl CGI. no output until backend script is done Post 302444855 by pludi on Friday 13th of August 2010 03:24:04 AM
Old 08-13-2010
Perl buffers output on stdout by default untill the buffer is full, or a newline is found. You can force output either by adding ',"\n"' to the end of your print statements, or by disabling output buffering by adding this line near the top:
Code:
$| = 1;

But even then it's not guaranteed that the browser will start rendering the page before it received all the content.
 

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OB_END_FLUSH(3) 							 1							   OB_END_FLUSH(3)

ob_end_flush - Flush (send) the output buffer and turn off output buffering

SYNOPSIS
bool ob_end_flush (void ) DESCRIPTION
This function will send the contents of the topmost output buffer (if any) and turn this output buffer off. If you want to further process the buffer's contents you have to call ob_get_contents(3) before ob_end_flush(3) as the buffer contents are discarded after ob_end_flush(3) is called. The output buffer must be started by ob_start(3) with PHP_OUTPUT_HANDLER_FLUSHABLE and PHP_OUTPUT_HANDLER_REMOVABLE flags. Otherwise ob_end_flush(3) will not work. Note This function is similar to ob_get_flush(3), except that ob_get_flush(3) returns the buffer as a string. RETURN VALUES
Returns TRUE on success or FALSE on failure. Reasons for failure are first that you called the function without an active buffer or that for some reason a buffer could not be deleted (possible for special buffer). ERRORS
/EXCEPTIONS If the function fails it generates an E_NOTICE. EXAMPLES
Example #1 ob_end_flush(3) example The following example shows an easy way to flush and end all output buffers: <?php while (@ob_end_flush()); ?> SEE ALSO
ob_start(3), ob_get_contents(3), ob_get_flush(3), ob_flush(3), ob_end_clean(3). PHP Documentation Group OB_END_FLUSH(3)
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