PHP 5.4.33 Released

ob_get_contents

(PHP 4, PHP 5)

ob_get_contentsRetourne le contenu du tampon de sortie

Description

string ob_get_contents ( void )

Retourne le contenu du tampon de sortie sans l'effacer.

Valeurs de retour

Retourne le contenu du tampon de sortie sans l'effacer ou FALSE, si la temporisation de sortie n'est pas activée.

Exemples

Exemple #1 Exemple avec ob_get_contents()

<?php

ob_start
();

echo 
"Bonjour ";

$out1 ob_get_contents();

echo 
"le monde !";

$out2 ob_get_contents();

ob_end_clean();

var_dump($out1$out2);
?>

L'exemple ci-dessus va afficher :

string(8) "Bonjour "
string(18) "Bonjour le monde !"

Voir aussi

add a note add a note

User Contributed Notes 4 notes

up
14
mauroasprea+php at gmail dot com
3 years ago
This is an example of how the stack works:

<?php
//Level 0
ob_start();
echo
"Hello ";

//Level 1
ob_start();
echo
"Hello World";
$out2 = ob_get_contents();
ob_end_clean();

//Back to level 0
echo "Galaxy";
$out1 = ob_get_contents();
ob_end_clean();

//Just output
var_dump($out1, $out2);
?>
up
5
DrDreistein at dontknow dot at
2 years ago
i made a simple test which is faster: adding some text in the normal way or by the ob stack:

<?php
$start
= microtime(true);
$var = '';
for(
$i=0 ; $i <= 1000000 ; $i++) {
   
$var .= ' ';
}
$middle = microtime(true);

ob_start();
for(
$i=0 ; $i <= 1000000 ; $i++) {
    echo
' ';
}
$var = ob_get_contents();
ob_end_clean();

$end = microtime(true);

echo
$middle - $start;
echo
'<br />';
echo
$end - $middle;
?>

Outputs something like this:

0.33658003807068
0.30778789520264
up
-1
m227 ( at ) poczta dot onet dot pl
9 years ago
if you use ob_start with a callback function as a parameter, and that function changes ob string (as in example in manual) don't expect that ob_get_contents will return changed ob.
it will work as you would use ob_start with no parameter at all. So don't be confused.
up
-1
http://www.francescosaf.altervista.org
9 years ago
transfer image, another method (alternative to fsockopen or function socket) :

server(192.168.0.1)
makeimage.php
       ...........
       ...........
       $nameimage="xxxx.jpg"
       $comand=exec("plotvelocity.sh $nameimage $paramater1 $paramater2");
       ob_start();
        readfile($nameimage);
        $image_data = ob_get_contents();
        ob_end_clean();
        echo $image_data;
        unlink($nameimage);

Client  (192.168.0.2)
  $bild="images/newimage2.gif";
  $host="192.168.0.1";
  $url=file_get_contents("http://$host/makeimage.php?$querystring");
  $fp = fopen("$bild", 'wb');
  fwrite($fp, $url);
  fclose($fp);
  echo '<img src="'.$bild.'">';

naturally you can transfer whichever thing and not only images
To Top