Basic usage
Example #1 Output Control example
<?php
ob_start();
echo "Hello\n";
setcookie("cookiename", "cookiedata");
ob_end_flush();
?>
In the above example, the output from echo would be stored in the output buffer until ob_end_flush() was called. In the mean time, the call to setcookie() successfully stored a cookie without causing an error. (Headers cannot normally be sent to the browser after data has already been sent.)
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<?phpfunction ob($function){
ob_start();
$function();
$produced = ob_get_contents();
ob_end_clean();
return $produced;
}
echo ob(function(){echo 123;})=='123'?"echo captured\n":'';