php 的特殊用法

	function parse_template($tpl) { global $_SGLOBAL, $_SC, $_SCONFIG; //包含模板 $_SGLOBAL['sub_tpls'] = array($tpl); $tplfile = S_ROOT.'./'.$tpl.'.htm'; $objfile = S_ROOT.'./data/tpl_cache/'.str_replace('/','_',$tpl).'.php'; //read if(!file_exists($tplfile)) {   $tplfile = str_replace('/'.$_SCONFIG['template'].'/', '/default/', $tplfile); } $template = sreadfile($tplfile); if(empty($template)) {   exit("Template file : $tplfile Not found or have no access!"); } //模板 $template = preg_replace("/\<\!\-\-\{template\s+([a-z0-9_\/]+)\}\-\-\>/ie", "readtemplate('\\1')", $template); //处理子页面中的代码 $template = preg_replace("/\<\!\-\-\{template\s+([a-z0-9_\/]+)\}\-\-\>/ie", "readtemplate('\\1')", $template); //解析模块调用 $template = preg_replace("/\<\!\-\-\{block\/(.+?)\}\-\-\>/ie", "blocktags('\\1')", $template); //解析广告 $template = preg_replace("/\<\!\-\-\{ad\/(.+?)\}\-\-\>/ie", "adtags('\\1')", $template); //时间处理 $template = preg_replace("/\<\!\-\-\{date\((.+?)\)\}\-\-\>/ie", "datetags('\\1')", $template); //头像处理 $template = preg_replace("/\<\!\-\-\{avatar\((.+?)\)\}\-\-\>/ie", "avatartags('\\1')", $template); //PHP代码 $template = preg_replace("/\<\!\-\-\{eval\s+(.+?)\s*\}\-\-\>/ies", "evaltags('\\1')", $template); //开始处理 //变量 $var_regexp = "(([url=]\\\$[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)(\[[a-zA-Z0-9_\-\.\"\'\[\]\$\x7f-\xff]+\[/url]])*)"; $template = preg_replace("/\<\!\-\-\{(.+?)\}\-\-\>/s", "{\\1}", $template); $template = preg_replace("/([\n\r]+)\t+/s", "\\1", $template); $template = preg_replace("/([url=]\\\$[a-zA-Z0-9_\[\]\'\"\$\x7f-\xff]+)\.([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)/s[/url]", "[url=file://1[]\\1['\\2'[/url]]", $template); $template = preg_replace("/\{([url=]\\\$[a-zA-Z0-9_\[\]\'\"\$\.\x7f-\xff]+)\}/s[/url]", "<?=\\1?>", $template); $template = preg_replace("/$var_regexp/es", "addquote('<?=\\1?>')", $template); $template = preg_replace("/\<\?\=\<\?\=$var_regexp\?\>\?\>/es", "addquote('<?=\\1?>')", $template); //逻辑 $template = preg_replace("/\{elseif\s+(.+?)\}/ies", "stripvtags('<?php } elseif(\\1) { ?>','')", $template); $template = preg_replace("/\{else\}/is", "<?php } else { ?>", $template); //循环 for($i = 0; $i < 5; $i++) {   $template = preg_replace("/\{loop\s+(\S+)\s+(\S+)\}(.+?)\{\/loop\}/ies", "stripvtags('<?php if(is_array(\\1)) { foreach(\\1 as \\2) { ?>','\\3<?php } } ?>')", $template);   $template = preg_replace("/\{loop\s+(\S+)\s+(\S+)\s+(\S+)\}(.+?)\{\/loop\}/ies", "stripvtags('<?php if(is_array(\\1)) { foreach(\\1 as \\2 => \\3) { ?>','\\4<?php } } ?>')", $template);   $template = preg_replace("/\{if\s+(.+?)\}(.+?)\{\/if\}/ies", "stripvtags('<?php if(\\1) { ?>','\\2<?php } ?>')", $template); } //常量 $template = preg_replace("/\{([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)\}/s", "<?=\\1?>", $template); //替换 if(!empty($_SGLOBAL['block_search'])) {   $template = str_replace($_SGLOBAL['block_search'], $_SGLOBAL['block_replace'], $template); } //换行 $template = preg_replace("/ \?\>[\n\r]*\<\? /s", " ", $template); //附加处理 $template = "<?php if(!defined('IN_UCHOME')) exit('Access Denied');?><?php subtplcheck('".implode('|', $_SGLOBAL['sub_tpls'])."', '$_SGLOBAL[timestamp]', '$tpl');?>$template<?php ob_out();?>"; //write if(!swritefile($objfile, $template)) {   exit("File: $objfile can not be write!"); } }

ＣooL．泪猪说：