ob_get_contents

(PHP 4, PHP 5)

ob_get_contents — 出力用バッファの内容を返す

説明

string ob_get_contents ( void )

出力用バッファの内容を取得します。バッファの内容はクリアしません。

返り値

出力用バッファの内容を返します。出力のバッファリングがアクティブでない場合には FALSE を返します。

例

例1 単純な ob_get_contents() の例


<?php

ob_start();

echo "Hello ";

$out1 = ob_get_contents();

echo "World";

$out2 = ob_get_contents();

ob_end_clean();

var_dump($out1, $out2);
?>

上の例の出力は以下となります。

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

参考

ob_start() - 出力のバッファリングを有効にする
ob_get_length() - 出力バッファの長さを返す

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 04-Oct-2011 04:07


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 08:10


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 06:53


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 02:04


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

add a note