本文实例讲述了PHP模板解析类。分享给大家供大家参考。具体如下：
';//模板右标签
private $template_c = '';//编译目录
private $template_path = '';//模板完整路径
private $template_name = '';//模板名称 index.html
//定义每个模板的标签的元素
private $tag_foreach = array('from', 'item', 'key');
private $tag_include = array('file');//目前只支持读取模板默认路径
public function __construct($conf) {
$this->conf = &$conf;
$this->template_c = $this->conf['template_config']['template_c'];//编译目录
$this->_tpl_suffix = $this->tpl_suffix();
}
private function str_replace($search, $replace, $content) {
if(empty($search) || empty($replace) || empty($content)) return false;
return str_replace($search, $replace, $content);
}
private function preg_match_all($pattern, $content) {
if(empty($pattern) || empty($content)) core::show_error('查找模板标签失败!');
preg_match_all("/".$this->template_tag_left.$pattern.$this->template_tag_right."/is", $content, $match);
return $match;
}
public function tpl_suffix() {
$tpl_suffix = empty($this->conf['template_config']['template_suffix']) ?
$this->tpl_suffix :
$this->conf['template_config']['template_suffix'] ;
return $tpl_suffix;
}
public function assign($key, $value) {
$this->vars[$key] = $value;
}
public function display($filename = '', $view_path = '') {
$tpl_path_arr = $this->get_tpl($filename, $view_path);//获取TPL完整路径 并且向指针传送路径以及名称
if(!$tpl_path_arr) core::show_error($filename.$this->_tpl_suffix.'模板不存在');
//编译开始
$this->view_path_param = $view_path;//用户传递过来的模版跟目录
$this->compile();
}
private function compile() {
$filepath = $this->template_path.$this->template_name;
$compile_dirpath = $this->check_temp_compile();
$vars_template_c_name = str_replace($this->_tpl_suffix, '', $this->template_name);
$include_file = $this->template_replace($this->read_file($filepath), $compile_dirpath, $vars_template_c_name);//解析
if($include_file) {
$this->read_config() && $config = $this->read_config();
extract($this->vars, EXTR_SKIP);
[url=home.php?mod=space&uid=48608]@include[/url] $include_file;
}
}
protected function read_config() {
if(file_exists(SYSTEM_PATH.'conf/config.php')) {
@include SYSTEM_PATH.'conf/config.php';
return $config;
}
return false;
}
private function template_replace($str, $compile_dirpath, $vars_template_c_name) {
if(empty($str)) core::show_error('模板内容为空！');
//处理编译头部
$compile_path = $compile_dirpath.$vars_template_c_name.$this->tpl_compile_suffix;//编译文件
if(is_file($compile_path)) {
//$header_content = $this->get_compile_header($compile_path);
//$compile_date = $this->get_compile_header_comment($header_content);
$tpl_filemtime = filemtime($this->template_path.$this->template_name);
$compile_filemtime = filemtime($compile_path);
//echo $tpl_filemtime.'=='.date('Y-m-d H:i:s', $tpl_filemtime).'
';
//echo $compile_filemtime.'=='.date('Y-m-d H:i:s', $compile_filemtime);
//如果文件过期编译 当模板标签有include并且有修改时 也重新编译
//<{include file="public/left.html"}> 当修改include里的文件，非DEBUG模式时 如果不更改主文件 目前是不重新编译include里的文件，我在考虑是否也要更改，没想好，暂时这样，所以在开发阶段一定要开启DEBUG=1模式 要不然修改include文件无效 。 有点罗嗦，不知道表述清楚没
if($tpl_filemtime > $compile_filemtime || DEBUG) {
$ret_file = $this->compile_file($vars_template_c_name, $str, $compile_dirpath);
} else {
$ret_file = $compile_path;
}
} else {//编译文件不存在 创建他
$ret_file = $this->compile_file($vars_template_c_name, $str, $compile_dirpath);
}
return $ret_file;
}
private function body_content($str) {
//解析
$str = $this->parse($str);
$header_comment = "Create On##".time()."|Compiled from##".$this->template_path.$this->template_name;
$content = "rn$str";
return $content;
}
private function parse($content) {
//foreach
$content = $this->parse_foreach($content);
//include
$content = $this->parse_include($content);
//if
$content = $this->parse_if($content);
//elseif
$content = $this->parse_elseif($content);
//模板标签公用部分
$content = $this->parse_comm($content);
//转为PHP代码
$content = $this->parse_php($content);
return $content;
}
private function parse_echo($content) {
}
private function parse_php($content){
if(empty($content)) return false;
$content = preg_replace("/".$this->template_tag_left."(.+?)".$this->template_tag_right."/is", "", $content);
return $content;
}
private function parse_if($content) {
if(empty($content)) return false;
//preg_match_all("/".$this->template_tag_left."ifs+(.*?)".$this->template_tag_right."/is", $content, $match);
$match = $this->preg_match_all("ifs+(.*?)", $content);
if(!isset($match[1]) || !is_array($match[1])) return $content;
foreach($match[1] as $k => $v) {
//$s = preg_split("/s+/is", $v);
//$s = array_filter($s);
$content = str_replace($match[0][$k], "", $content);
}
return $content;
}
private function parse_elseif($content) {
if(empty($content)) return false;
//preg_match_all("/".$this->template_tag_left."elseifs+(.*?)".$this->template_tag_right."/is", $content, $match);
$match = $this->preg_match_all("elseifs+(.*?)", $content);
if(!isset($match[1]) || !is_array($match[1])) return $content;
foreach($match[1] as $k => $v) {
//$s = preg_split("/s+/is", $v);
//$s = array_filter($s);
$content = str_replace($match[0][$k], "", $content);
}
return $content;
}
private function parse_include($content) {
if(empty($content)) return false;
//preg_match_all("/".$this->template_tag_left."includes+(.*?)".$this->template_tag_right."/is", $content, $match);
$match = $this->preg_match_all("includes+(.*?)", $content);
if(!isset($match[1]) || !is_array($match[1])) return $content;
foreach($match[1] as $match_key => $match_value) {
$a = preg_split("/s+/is", $match_value);
$new_tag = array();
//分析元素
foreach($a as $t) {
$b = explode('=', $t);
if(in_array($b[0], $this->tag_include)) {
if(!empty($b[1])) {
$new_tag[$b[0]] = str_replace(""", "", $b[1]);
} else {
core::show_error('模板路径不存在!');
}
}
}
extract($new_tag);
//查询模板文件
foreach($this->conf['view_path'] as $v){
$conf_view_tpl = $v.$file;//include 模板文件
if(is_file($conf_view_tpl)) {
$c = $this->read_file($conf_view_tpl);
$inc_file = str_replace($this->_tpl_suffix, '', basename($file));
$this->view_path_param = dirname($file).'/';
$compile_dirpath = $this->check_temp_compile();
$include_file = $this->template_replace($c, $compile_dirpath, $inc_file);//解析
break;
} else {
core::show_error('模板文件不存在,请仔细检查 文件:'. $conf_view_tpl);
}
}
$content = str_replace($match[0][$match_key], '', $content);
}
return $content;
}
private function parse_foreach($content) {
if(empty($content)) return false;
//preg_match_all("/".$this->template_tag_left."foreachs+(.*?)".$this->template_tag_right."/is", $content, $match);
$match = $this->preg_match_all("foreachs+(.*?)", $content);
if(!isset($match[1]) || !is_array($match[1])) return $content;
foreach($match[1] as $match_key => $value) {
$split = preg_split("/s+/is", $value);
$split = array_filter($split);
$new_tag = array();
foreach($split as $v) {
$a = explode("=", $v);
if(in_array($a[0], $this->tag_foreach)) {//此处过滤标签 不存在过滤
$new_tag[$a[0]] = $a[1];
}
}
$key = '';
extract($new_tag);
$key = ($key) ? '$'.$key.' =>' : '' ;
$s = '';
$content = $this->str_replace($match[0][$match_key], $s, $content);
}
return $content;
}
private function parse_comm($content) {
$search = array(
"/".$this->template_tag_left."/foreach".$this->template_tag_right."/is",
"/".$this->template_tag_left."/if".$this->template_tag_right."/is",
"/".$this->template_tag_left."else".$this->template_tag_right."/is",
);
$replace = array(
"",
"",
""
);
$content = preg_replace($search, $replace, $content);
return $content;
}
private function check_temp_compile() {
//$paht = $this->template_c.
$tpl_path = ($this->view_path_param) ? $this->view_path_param : $this->get_tpl_path() ;
$all_tpl_apth = $this->template_c.$tpl_path;
if(!is_dir($all_tpl_apth)) {
$this->create_dir($tpl_path);
}
return $all_tpl_apth;
}
private function read_file($path) {
//$this->check_file_limits($path, 'r');
if(($r = @fopen($path, 'r')) === false) {
core::show_error('模版文件没有读取或执行权限，请检查！');
}
$content = fread($r, filesize($path));
fclose($r);
return $content;
}
private function compile_file($filename, $content, $dir) {
if(empty($filename)) core::show_error("{$filename} Creation failed");
$content = $this->body_content($content);//对文件内容操作
//echo '开始编译了=====';
$f = $dir.$filename.$this->tpl_compile_suffix;
//$this->check_file_limits($f, 'w');
if(($fp = @fopen($f, 'wb')) === false) {
core::show_error($f.'
编译文件失败，请检查文件权限.');
}
//开启flock
flock($fp, LOCK_EX + LOCK_NB);
fwrite($fp, $content, strlen($content));
flock($fp, LOCK_UN + LOCK_NB);
fclose($fp);
return $f;
}
public function check_file_limits($path , $status = 'rw') {
clearstatcache();
if(!is_writable($path) && $status == 'w') {
core::show_error("{$path}
没有写入权限，请检查.");
} elseif(!is_readable($path) && $status == 'r') {
core::show_error("{$path}
没有读取权限，请检查.");
} elseif($status == 'rw') {//check wirte and read
if(!is_writable($path) || !is_readable($path)) {
core::show_error("{$path}
没有写入或读取权限，请检查");
}
}
}
private function get_tpl($filename, $view_path) {
empty($filename) && $filename = $this->tpl_name;
//遍历模板路径
foreach($this->conf['view_path'] as $path) {
if($view_path) {//直接从tpl跟目录找文件
$tpl_path = $path.$view_path;
$view_file_path = $tpl_path.$filename.$this->_tpl_suffix;
} else {//根据目录，控制器，方法开始找文件
$view_file_path = ($tpl_path = $this->get_tpl_path($path)) ? $tpl_path.$filename.$this->_tpl_suffix : exit(0);
}
if(is_file($view_file_path)) {
//向指针传送模板路径和模板名称
$this->template_path = $tpl_path;//
$this->template_name = $filename.$this->_tpl_suffix;
return true;
} else {
core::show_error($filename.$this->_tpl_suffix.'模板不存在');
}
}
}
private function get_tpl_path($path = '') {
core::get_directory_name() && $path_arr[0] = core::get_directory_name();
core::get_controller_name() && $path_arr[1] = core::get_controller_name();
(is_array($path_arr)) ? $newpath = implode('/', $path_arr) : core::show_error('获取模板路径失败!') ;
return $path.$newpath.'/';
}
private function create_dir($path, $mode = 0777){
if(is_dir($path)) return false;
$dir_arr = explode('/', $path);
$dir_arr = array_filter($dir_arr);
$allpath = '';
$newdir = $this->template_c;
foreach($dir_arr as $dir) {
$allpath = $newdir.'/'.$dir;
if(!is_dir($allpath)) {
$newdir = $allpath;
if(!@mkdir($allpath, $mode)) {
core::show_error( $allpath.'
创建目录失败，请检查是否有可都写权限！');
}
chmod($allpath, $mode);
} else {
$newdir = $allpath;
}
}
return true;
}
public function __destruct(){
$this->vars = null;
$this->view_path_param = null;
}
}
希望本文所述对大家的php程序设计有所帮助。
