将css代码压缩能够减小文件的体积，从而减小了网络传输量和带宽占用，减小了服务器的处理的压力
源码：
| 代码如下 | 复制代码 |
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> </head> <?php $string = trim(stripslashes($_POST['code'])); //stripslashes()函数删除转义字符（反斜杠） if(!empty($string)){ if($_POST['method'] == '压缩' ){ $string = css_compress($string); }elseif($_POST['method'] == '解压缩' ){ $string = css_decompress($string); } }else{ $string = ''; } function css_compress($string){ //压缩 $string = str_replace("\r\n","",$string); //首先去掉换行 $string = preg_replace("/(\s*\{\s*)/","{",$string); $string = preg_replace("/(\s*\;\s*\}\s*)/","}",$string); //去掉反括号首位的空格和换行，和最后一个; $string = preg_replace("/(\s*\;\s*)/",";",$string); return $string; } function css_decompress($string){ //解压 $string = css_compress($string); //为了效果更好，解压前，先压缩至最简状态 $string = str_replace("{","\r\n{\r\n\t",$string); $string = str_replace("}","\r\n}\r\n\r\n",$string); $string = str_replace(";",";\r\n\t",$string); $string = str_replace("*/","*/\r\n",$string); return $string; } ?> <body> <div style="width:800px;height:500px;text-align:center"> <p><strong>请将css代码粘贴到下面框中,然后选择压缩/解压缩</strong></p> <form action="" method="post" name="css_code"> <textarea style="width:90%;height:460px;padding:5px;" name="code"><?php echo $string; ?></textarea> <br /> <input type="submit" name="method" value="压缩" /> <input type="submit" name="method" value="解压缩" /> </form> </div> </body> </html> |
|