PHP can include Text/HTML from CGI but not from Text/CSS?

There's no problem to include cgi output with php except when it is Text/CSS. I tried to do so with:

<?php echo system('./cgi-bin/styl开发者_如何学Goegallery.cgi'); ?>

As you can see here, it returns blank: http://reboltutorial.com/gallery/stylegallery.php

whereas the cgi is returning something: http://reboltutorial.com/cgi-bin/stylegallery.cgi

I tried to add content-type:

<?php header("Content-type: text/css"); ?>
<?php echo system('./cgi-bin/stylegallery.cgi'); ?>

But nothing changed. Any idea why ? Thanks.

According to the PHP docs, system() only returns the last line of output from your executed script.

The passthru() function might be more suited for what you're trying to do.