Php template function regular implementation code

Php template function regular implementation code

Function template ($ tpl = 'index', $ dir = 'Hello ') { If (! File_exists ($ pd = TPL_PATH. $ dir. '/') @ mkdir ($ pd, 0777) or die ("$ pd directory creation failed"); // such as cache/tpl/hello/ If (! File_exists ($ td = TPL. $ dir. '/') @ mkdir ($ td, 0777) or die ("$ td directory creation failed"); // such as data/tpl/hello/ $ T2p = $ pd. $ tpl. '. php'; // The php file generated after regular conversion of the template file, such as cache/tpl/hello/index. php $ T2h = $td.$tpl.'.html '; // html template file, such as data/tpl/hello/index.html ?> 2. when do I need regular expression conversion? It can be that the php file after the regular expression does not exist, or the html file before the regular expression changes. The filemtime (string $ path) function is used here, and the last modification time of the file is returned. If (! File_exists ($ t2p) | @ filemtime ($ t2p) <@ filemtime ($ t2h) // after the template file is changed, the regular PHP file is updated accordingly. { Template_go ($ t2p, $ t2h); // The template conversion starts. } Return $ t2p; // return the php file after the regular expression, which can be called like this: include template ('header', 'Hello '); } ?> 3. start template conversion, read from the html file, replace the regular expression, and write it to the PHP file. Function template_go ($ t2p, $ t2h) { $ Str = @ file_get_contents ($ t2h); // Read If ($ str = false) exit ("The template file is missing. Please check it! "); $ Str = template_do ($ str); // regular expression replacement @ Chmod ($ t2p, 0777 ); Return $ str = file_put_contents ($ t2p, $ str); // write } ?> 4. Regular expression rules: several simple regular expression replacement syntaxes. Function template_do ($ str) { $ Str = preg_replace ('/([\ n \ r +]) \ t +/S',' \ 1', $ str); // remove the TAB. The modifier/s does not ignore line breaks. $ Str = preg_replace ('/\{\$ (. *) \}/U ',' ', $ Str);/* Replace {$ xx} Note: the modifier/U must be added and can only be matched once. It can also be a lazy match */ $ Str = preg_replace ('/\ {php (. + )\}/',' ', $ Str);/* Replace {php xxxx} Note: the modifier/s cannot be added. you need to consider the issue of line feed when performing this regular expression multiple times */ $ Str = preg_replace ('/\ {template (. *) \}/U ',' ', $ Str ); /* Replace {template (xx, yy)} */ $ Str = preg_replace ('/\ {include (. *) \}/U ',' ', $ Str);/* {include xx. php} is replaced */ $ Str =" ". $ Str; // $ Str = preg_replace ('/\ s +/', ', $ str); // check the source code of the webpage. Return $ str; } ?> Of course, this function is relatively simple and is expected to be improved.