ob_get_contents

(PHP 4, PHP 5)

ob_get_contents — Retourne 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 tamporisation 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

ob_start() - Enclenche la tamporisation de sortie
ob_get_length() - Retourne la longueur du contenu du tampon de sortie

ob_get_flush

ob_get_clean

[edit] Last updated: Fri, 25 May 2012

add a note User Contributed Notes ob_get_contents

DrDreistein at dontknow dot at 05-Oct-2011 01:07


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

mauroasprea+php at gmail dot com 30-Dec-2010 05:10


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);

?>

m227 ( at ) poczta dot onet dot pl 24-Feb-2005 03:53


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.

http://www.francescosaf.altervista.org 08-Feb-2005 11:04


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

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