PHP 5.6.0RC3 is available

ob_get_contents

(PHP 4, PHP 5)

ob_get_contentsReturn the contents of the output buffer

Descrierea

string ob_get_contents ( void )

Gets the contents of the output buffer without clearing it.

Valorile întoarse

This will return the contents of the output buffer or FALSE, if output buffering isn't active.

Exemple

Example #1 A simple ob_get_contents() example

<?php

ob_start
();

echo 
"Hello ";

$out1 ob_get_contents();

echo 
"World";

$out2 ob_get_contents();

ob_end_clean();

var_dump($out1$out2);
?>

Exemplul de mai sus va afișa:

string(6) "Hello "
string(11) "Hello World"

Vedeți de asemenea

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User Contributed Notes 4 notes

up
7
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
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
up
0
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.
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