ob_get_contents in PHP

ob_get_contents — Return the contents of the output buffer
Syntax: string ob_get_contents ( void )
Gets the contents of the output buffer without clearing it.
Return Values:This will return the contents of the output buffer or FALSE, if output buffering isn't active.
Example #1

<?php
ob_start();
echo "Hello ";
$out1 = ob_get_contents();
echo "World";
$out2 = ob_get_contents();
ob_end_clean();
var_dump($out1, $out2);
?>
Output:

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