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ＣooL．泪猪 发表于 2012-6-6 04:58:58

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+(+)\}\-\-\>/ie", "readtemplate('\\1')", $template);
//处理子页面中的代码
$template = preg_replace("/\<\!\-\-\{template\s+(+)\}\-\-\>/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 = "((\\\$*)(\[\$\x7f-\xff]+\])*)";
$template = preg_replace("/\<\!\-\-\{(.+?)\}\-\-\>/s", "{\\1}", $template);
$template = preg_replace("/([\n\r]+)\t+/s", "\\1", $template);
$template = preg_replace("/(\\\$\'\"\$\x7f-\xff]+)\.(*)/s", "\\1['\\2']", $template);
$template = preg_replace("/\{(\\\$\'\"\$\.\x7f-\xff]+)\}/s", "<?=\\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("/\{(*)\}/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', '$tpl');?>$template<?php ob_out();?>";

//write
if(!swritefile($objfile, $template)) {
exit("File: $objfile can not be write!");
}
}

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