PHP压缩CSS文件示例代码

3. // This defines the header type

4. header("Content-type: text/css");
6. // Start the output buffer
7. ob_start("compress_css");
9. // Function which actually compress
10. // The CSS file
11. function compress_css($buffer)
12. {
13. /* remove comments */
14. $buffer = preg_replace("!/\*[^*]*\*+([^/][^*]*\*+)*/!", "", $buffer) ;
15. /* remove tabs, spaces, newlines, etc. */
16. $arr = array("\r\n", "\r", "\n", "\t", " ", " ", " ") ;
17. $buffer = str_replace($arr, "", $buffer) ;
18. return $buffer;
19. }

20. /* include all CSS files */

21. include("style.css");
22. include("fonts.css");
23. include("print.css");

24. // Flush the output buffer

25. ob_end_flush();
26. ?>

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此使用了output buffer函数来实现，此函数说明，请参考：Output Buffer Explained(http://www.phpcodebase.com/php-output-buffering-explained/)。