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PHP 模板引擎的简单代码怎么弄!

问题:我只想要一个简单的,自己写的模板引擎的代码!

Smarty这样浮渣的程序就算了!
答案:
//phpcms 的核心模板解析函数
/*

*/

function template_parse($str)
{

$str = preg_replace("/\{(\\$[a-zA-Z0-9_\[\]\'\"\$\x7f-\xff]+)\}/es", "addquote('<?php echo \\1;?>')",$str);
$str = preg_replace("/\{([A-Z_\x7f-\xff][A-Z0-9_\x7f-\xff]*)\}/s", "<?php echo \\1;?>",$str);
$str = preg_replace("/([\n\r]+)\t+/s","\\1",$str);
$str = preg_replace("/\<\!\-\-\{(.+?)\}\-\-\>/s", "{\\1}",$str);
$str = preg_replace("/\{template\s+(.+)\}/","\n<?php include template(\\1); ?>\n",$str);
$str = preg_replace("/\{include\s+(.+)\}/","\n<?php include \\1; ?>\n",$str);
$str = preg_replace("/\{php\s+(.+)\}/","\n<?php \\1?>\n",$str);
$str = preg_replace("/\{if\s+(.+?)\}/","<?php if(\\1) { ?>",$str);
$str = preg_replace("/\{else\}/","<?php } else { ?>",$str);
$str = preg_replace("/\{elseif\s+(.+?)\}/","<?php } elseif (\\1) { ?>",$str);
$str = preg_replace("/\{\/if\}/","<?php } ?>",$str);
$str = preg_replace("/\{loop\s+(\S+)\s+(\S+)\}/","<?php if(is_array(\\1)) foreach(\\1 AS \\2) { ?>",$str);
$str = preg_replace("/\{loop\s+(\S+)\s+(\S+)\s+(\S+)\}/","\n<?php if(is_array(\\1)) foreach(\\1 AS \\2 => \\3) { ?>",$str);
$str = preg_replace("/\{\/loop\}/","\n<?php } ?>\n",$str);
$str = preg_replace("/\{tag_([^}]+)\}/e", "get_tag('\\1')", $str);
$str = preg_replace("/\{\\$([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*\(([^{}]*)\))\}/","<?php echo \\1;?>",$str);
$str = preg_replace("/\{(\\$[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)\}/","<?php echo \\1;?>",$str);

}
function addquote($var)
{
return str_replace("\\\"", "\"", preg_replace("/\[([a-zA-Z0-9_\-\.\x7f-\xff]+)\]/s", "['\\1']", $var));
}

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