超级精简的php模板解析引擎 iSmarty

时间:2014-07-22 14:51来源: 作者: 点击: 次

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整理自: a target=_blank href=http://blog.csdn.net/tanggongde/article/details/1365658 rel=nofollowhttp://blog.csdn.net/tanggongde/article/details/1365658/a br /

整理自: http://blog.csdn.net/tanggongde/article/details/1365658

<?php
class iSmarty
{
    /*
     * The name of the directory where templates are located.
     * @var string
     */
    var $templatedir = '/';
    
    /*
     * The directory where compiled templates are located.
     * @var string
     */
    var $compiledir = 'test/';
    
    /*
     * where assigned template vars are kept
     * @var array
     */
    var $vars = array();
    
    /*
     * compile a resource
     * sets PHP tag to the compiled source
     * @param string $tpl (template file)
     */
    function parse($tpl)
    {
        // load template file //
        $fp   = @fopen($tpl, 'r');
        $text = fread($fp, filesize($tpl));
        fclose($fp);
        // repalce template tag to PHP tag //
        $text        = str_replace('{/if}', '<?php } ?>', $text);
        $text        = str_replace('{/loop}', '<?php } ?>', $text);
        $text        = str_replace('{foreachelse}', '<?php } else {?>', $text);
        $text        = str_replace('{/foreach}', '<?php } ?>', $text);
        $text        = str_replace('{else}', '<?php } else {?>', $text);
        $text        = str_replace('{loopelse}', '<?php } else {?>', $text);
        // template pattern tags //
        $pattern     = array(
            '/\$(\w*[a-zA-Z0-9_])/',
            '/\$this\-\>vars\[\'(\w*[a-zA-Z0-9_])\'\]+\.(\w*[a-zA-Z0-9])/',
            '/\{include file=(\"|\'|)(\w*[a-zA-Z0-9_\.][a-zA-Z]\w*)(\"|\'|)\}/',
            '/\{\$this\-\>vars(\[\'(\w*[a-zA-Z0-9_])\'\])(\[\'(\w*[a-zA-Z0-9_])\'\])?\}/',
            '/\{if (.*?)\}/',
            '/\{elseif (.*?)\}/',
            '/\{loop \$(.*) as (\w*[a-zA-Z0-9_])\}/',
            '/\{foreach \$(.*) (\w*[a-zA-Z0-9_])\=\>(\w*[a-zA-Z0-9_])\}/'
        );
        // replacement PHP tags //
        $replacement = array(
            '$this->vars[\'\1\']',
            '$this->vars[\'\1\'][\'\2\']',
            '<?php $this->display(\'\2\')?>',
            '<?php echo \$this->vars\1\3?>',
            '<?php if(\1) {?>',
            '<?php } elseif(\1) {?>',
            '<?php if (count((array)\$\1)) foreach((array)\$\1 as \$this->vars[\'\2\']) {?>',
            '<?php if (count((array)\$\1)) foreach((array)\$\1 as \$this->vars[\'\2\']=>$this->vars[\'\3\']) {?>'
        );
        // repalce template tags to PHP tags //
        $text = preg_replace($pattern, $replacement, $text);
        
        // create compile file //
        $compliefile = $this->compiledir . basename($tpl) . '.php';
        if ($fp = @fopen($compliefile, 'w')) {
            fputs($fp, $text);
            fclose($fp);
        }
    }
    
    /*
     * assigns values to template variables
     * @param array|string $k the template variable name(s)
     * @param mixed $v the value to assign
     */
    function assign($k, $v = null)
    {
        $this->vars[$k] = $v;
    }
    
    /*
     * ste directory where templates are located
     * @param string $str (path)
     */
    function templateDir($path)
    {
        $this->templatedir = $this->pathCheck($path);
    }
    
    /*
     * set where compiled templates are located
     * @param string $str (path)
     */
    function compileDir($path)
    {
        $this->compiledir = $this->pathCheck($path);
    }
    
    /*
     * check the path last character
     * @param string $str (path)
     * @return string
     */
    function pathCheck($str)
    {
        return (preg_match('/\/$/', $str)) ? $str : $str . '/';
    }
    
    /*
     * executes & displays the template results
     * @param string $tpl (template file)
     */
    function display($tpl)
    {
        $tplfile = $this->templatedir . $tpl;
        if (!file_exists($tplfile)) {
            exit('can not load template file : ' . $tplfile);
        }
        $compliefile = $this->compiledir . $tpl . '.php';
        if (!file_exists($compliefile) || filemtime($tplfile) > filemtime($compliefile)) {
            $this->parse($tplfile);
        }
        include_once($compliefile);
    }
}

?>

2. [代码][PHP]代码跳至 [1] [2] [3] [全屏预览]

<?php
include 'iSmarty.php';
$tpl = new iSmarty();
$tpl->assign('title','标题');
$tpl->assign('Name','名字');

$contact = array('1'=>'张一','2'=>'zhang2');
$tpl->assign('contact',$contact);
$tpl->display('test.html');

?>

3. [代码][PHP]代码跳至 [1] [2] [3] [全屏预览]

<!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" />
<title>无标题文档</title>
</head>
<body>
<DIV>{$title} - {$Name}</DIV>
{foreach $contact  key=>val}
	{$key}: {$val}<br>
{/foreach}
</body>
</html>