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<?php
/* $Id: ob.lib.php,v 2.2 2003/11/26 22:52:23 rabus Exp $ */
// vim: expandtab sw=4 ts=4 sts=4:
/**
* Output buffer functions for phpMyAdmin
*
* Copyright 2001 Jeremy Brand <jeremy@nirvani.net>
* http://www.jeremybrand.com/Jeremy/Brand/Jeremy_Brand.html
*
* Check for all the needed functions for output buffering
* Make some wrappers for the top and bottoms of our files.
*/
/**
* This function be used eventually to support more modes. It is needed
* because both header and footer functions must know what each other is
* doing.
*
* @return integer the output buffer mode
*/
function PMA_outBufferModeGet()
{
if (@function_exists('ob_start')) {
$mode = 1;
} else {
$mode = 0;
}
// If a user sets the output_handler in php.ini to ob_gzhandler, then
// any right frame file in phpMyAdmin will not be handled properly by
// the browser. My fix was to check the ini file within the
// PMA_outBufferModeGet() function.
//
// (Patch by Garth Gillespie, modified by Marc Delisle)
if (@ini_get('output_handler') == 'ob_gzhandler') {
$mode = 0;
}
if (@get_cfg_var('output_handler') == 'ob_gzhandler') {
$mode = 0;
}
// End patch
// If output buffering is enabled in php.ini it's not possible to
// add the ob_gzhandler without a warning message from php 4.3.0.
// Being better safe than sorry, check for any existing output handler
// instead of just checking the 'output_buffering' setting.
//
if (@function_exists('ob_get_level')) {
if (ob_get_level() > 0) {
$mode = 0;
}
}
// Zero (0) is no mode or in other words output buffering is OFF.
// Follow 2^0, 2^1, 2^2, 2^3 type values for the modes.
// Usefull if we ever decide to combine modes. Then a bitmask field of
// the sum of all modes will be the natural choice.
header('X-ob_mode: ' . $mode);
return $mode;
} // end of the 'PMA_outBufferModeGet()' function
/**
* This function will need to run at the top of all pages if output
* output buffering is turned on. It also needs to be passed $mode from
* the PMA_outBufferModeGet() function or it will be useless.
*
* @param integer the output buffer mode
*
* @return boolean whether output buffering is enabled or not
*/
function PMA_outBufferPre($mode)
{
switch($mode)
{
case 1:
ob_start('ob_gzhandler');
$retval = TRUE;
break;
case 0:
$retval = FALSE;
break;
// loic1: php3 fix
default:
$retval = FALSE;
break;
} // end switch
return $retval;
} // end of the 'PMA_outBufferPre()' function
/**
* This function will need to run at the bottom of all pages if output
* buffering is turned on. It also needs to be passed $mode from the
* PMA_outBufferModeGet() function or it will be useless.
*
* @param integer the output buffer mode
*
* @return boolean whether data has been send from the buffer or not
*/
function PMA_outBufferPost($mode)
{
switch($mode)
{
case 1:
# This output buffer doesn't need a footer.
$retval = TRUE;
break;
case 0:
$retval = FALSE;
break;
// loic1: php3 fix
default:
$retval = FALSE;
break;
} // end switch
return $retval;
} // end of the 'PMA_outBufferPost()' function
?>
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