Php implements compression and decompression of css files-PHP source code

Below we use php to implement a small program for css compression and decompression, which is not suitable for js operations for the moment. In this case, you can learn the php character replacement and regular expression Replacement Technologies. Below we use php to implement a small program for css compression and decompression, which is not suitable for js operations for the moment. In this case, you can learn the php character replacement and regular expression Replacement Technologies.

Script ec (2); script

Compressing css code reduces the file size, reduces the amount of network transmission and bandwidth usage, and reduces the processing pressure on the server.

Source code:

The Code is as follows:

$ String = trim (stripslashes ($ _ POST ['code']); // The stripslashes () function deletes escape characters (backslash) If (! Empty ($ string )){ If ($ _ POST ['method'] = 'compressing '){ $ String = css_compress ($ string ); } Elseif ($ _ POST ['method'] = 'decompressed '){ $ String = css_decompress ($ string ); } } Else { $ String = ''; } Function css_compress ($ string ){ // Compression $ String = str_replace ("\ r \ n", "", $ string); // remove the line feed first. $ String = preg_replace ("/(\ s * \ {\ s *)/", "{", $ string ); $ String = preg_replace ("/(\ s * \; \ s * \} \ s *)/", "}", $ string ); // remove the spaces and line breaks at the beginning of the parentheses and the last line; $ String = preg_replace ("/(\ s * \; \ s *)/", ";", $ string ); Return $ string; } Function css_decompress ($ string ){ // Extract $ String = css_compress ($ string); // before decompression, compress to the simplest state. $ String = str_replace ("{", "\ r \ n {\ r \ n \ t", $ string ); $ String = str_replace ("}", "\ r \ n} \ r \ n", $ string ); $ String = str_replace (";", "; \ r \ n \ t", $ string ); $ String = str_replace ("*/", "*/\ r \ n", $ string ); Return $ string; } ?> Paste the css Code in the following box and select compression/Decompression