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ob_flush> <ob_end_clean
Last updated: Fri, 14 Nov 2008

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ob_end_flush

(PHP 4, PHP 5)

ob_end_flushEnvoie les données du tampon de sortie et éteint la tamporisation de sortie

Description

bool ob_end_flush ( void )

Envoie le contenu du tampon de sortie (s'il existe) et éteint la tamporisation de sortie. Si vous voulez continuer à manipuler la valeur du tampon, vous pouvez appeler ob_get_contents() avant ob_end_flush() car le contenu du tampon est détruit après un appel à ob_end_flush().

Note: Cette fonction est similaire à ob_get_flush(), excepté que ob_get_flush() retourne le tampon comme une chaîne de caractères.

Valeurs de retour

Cette fonction retourne TRUE en cas de succès, FALSE en cas d'échec. Les raisons d'échec sont que vous pourriez avoir appelé la fonction sans avoir de tampon actif, ou que, pour une raison quelconque, le tampon n'a pu être effacé (possible pour un tampon spécial).

Erreurs / Exceptions

Si la fonction échoue, elle émet une alerte de type E_NOTICE.

Historique

Version Description
4.2.0 La fonction retourne une valeur booléenne.

Exemples

Exemple #1 Exemple avec ob_end_flush()

L'exemple ci-dessous montre une méthode simple pour vider tous les tampons :

<?php
while (@ob_end_flush());
?>



ob_flush> <ob_end_clean
Last updated: Fri, 14 Nov 2008
 
add a note add a note User Contributed Notes
ob_end_flush
skippy at zuavra dot net
01-Jul-2005 11:10
Apart from being mostly redundant, ob_end_flush() can be downright damaging in some weird cases.

Actual example: a particular page on an Intranet website which would appear blank on Internet Explorer 6 when ob_start('ob_gzhandler') was called in the beginning and ob_end_flush() at the end.

We couldn't figure out what made that page special no matter what we tried. The ob_ functions were placed in scripts which were include()'d by all pages just the same, but only that page did this.

Even stranger, the problem only appeared on direct browser/server connections. Whenever the connection passed through a proxy the problem dissapeared. I'm guessing some kind of HTTP encoding headers mumbo-jumbo.

Solution: unless you really need it in particular cases, remove the ob_end_flush() call and rely on the builtin, automatic buffer flush.
jhannus at 128kb dot com
05-Jun-2004 06:18
A note on the above example...

with PHP 4 >= 4.2.0, PHP 5 you can use a combination of ob_get_level() and ob_end_flush() to avoid using the @ (error suppresion) which should probably be a little faaster.

<?php

while (ob_get_level() > 0) {
   
ob_end_flush();
}

?>
kriek at jonkriek dot com
29-Mar-2003 06:22
ob_end_flush() isn't needed in MOST cases because it is called automatically at the end of script execution by PHP itself when output buffering is turned on either in the php.ini or by calling ob_start().
brett at realestate-school dot com
26-Sep-2002 10:01
It appears that you can call ob_end_flush() regardless of whether or not output buffering was ever started using ob_start(). This can prove useful because it saves you from having to create conditional statements based on whether a particular function or include file has started output buffering. You can simply call the ob_end_flush() anyway and if there's output in the buffer, it will be sent, otherwise your script will just keep on keepin' on.

ob_flush> <ob_end_clean
Last updated: Fri, 14 Nov 2008
 
 
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