PHP Custom Smarty template engine class Gaulo PHP

Smarty template engine class simple working principle

Using the Smarty template engine class to compile the variables in the template file, the compilation process is actually translated into PHP files using regular expressions. For example, in the template file {$title} use regular expressions to find and replace <?php echo $this->vars[' title '];? >

Customizing the Smarty Template engine Class smarty.class.php page

<?php/* *  Custom Smarty template engine class  */        class smarty {            private  $vars  = array ( );             //the first assignment of variables to a template               //has two parameters   one parameter is the variable name in the template, and the value of the variable assigned to it              public function assign ($name, $value =null ) {                         if ($name  !=  '   ')                                    $this->vars[$name]= $value;             }                         //loading the specified template   and displaying              //has a parameter that is the file name of the template              public function display ($tplname) {                          $comfile  =   "./comps/". $tplname. " _com.php ";                          $tplname  =  "./templates/". $tplname;                          //compile file does not exist   or template file changes   need to compile           &nbSp;              if (!file_exists ($ Comfile)  | |  filemtime ($tplname) >filemtime ($comfile)) {                          $html  = file_get _contents ($tplname);                                                  //the part {title} to replace                           $reg  =  '/\{\s*\$ ([a-za-z_\x7f-\xff][a-za-z0-9_\x7f-\xff]*) \s*\}/ ';                         //variable Regular expression [a-za-z_\x7f-\xff][a-za-z0-9_\x7f-\xff]*                                                    //Replacement part <?php echo  $this->vars[' title ';? >                          $rep  =  "<?php echo \ $this->vars[' \\1 ');? > ";                                                   $newhtml  = preg_ Replace ($reg,  $rep,  $html);                              file_put_contents ($comfile,  $newhtml);                          }                         include  $comfile;             }                     }

Invoke Template page index.php

<?phpheader (' content-type:text/html;charset=utf-8 '); */* Template engine * PHP hypertext preprocessing scripting language * Custom Template engine * * *//Include templates engine class include ' smart . class.php '; Create template Engine Object $smarty = new Smarty (); Connect database//Execute SQL statement//This is the dynamic data obtained from the database and needs to be displayed in the template $title = "This is a test";  $content = "This is content ..."; The first assigns a variable to the template $smarty->assign (' title ', $title); $smarty->assign (' content ', $content); Var_dump ($smarty); Loads the specified template and displays the $smarty->display (' c.php ');

Template File Page c.php page

Output results
Object (Smarty) [1] private ' vars ' = = Array (size=2) ' title ' = = String ' This is a test ' (length=14) ' Co Ntent ' = = String ' This is content ... ' (length=22) This was a testthis is content ...

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PHP Custom Smarty template engine class Gaulo PHP