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HomeBackend DevelopmentPHP TutorialPHP parsing and string processing of template files

本篇文章主要介绍php针对模板文件的解析与字符串处理,感兴趣的朋友参考下,希望对大家有所帮助。

本文实例讲述了PHP模板解析类,具体如下:

<?php
class template {
 private $vars = array();
 private $conf = &#39;&#39;;
 private $tpl_name = &#39;index&#39;;
 //如果模板不存在 会查找当前 controller默认index模板
 private $tpl_suffix = &#39;.html&#39;;//如果CONFIG没配置默认后缀 则显示
 private $tpl_compile_suffix= &#39;.tpl.php&#39;;//编译模板路径
 private $template_tag_left = &#39;<{&#39;;//模板左标签
 private $template_tag_right = &#39;}>&#39;;//模板右标签
 private $template_c = &#39;&#39;;//编译目录
 private $template_path = &#39;&#39;;//模板完整路径 
 private $template_name = &#39;&#39;;//模板名称 index.html
 //定义每个模板的标签的元素
 private $tag_foreach = array(&#39;from&#39;, &#39;item&#39;, &#39;key&#39;);
 private $tag_include = array(&#39;file&#39;);//目前只支持读取模板默认路径
 public function __construct($conf) {
  $this->conf = &$conf;
  $this->template_c = $this->conf[&#39;template_config&#39;][&#39;template_c&#39;];//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);
 }
 /**
  * preg_match_all
  * @param $pattern 正则
  * @param $content 内容
  * @return array
  */
 private function preg_match_all($pattern, $content) {
  if(empty($pattern) || empty($content)) core::show_error(&#39;查找模板标签失败!&#39;);
  preg_match_all("/".$this->template_tag_left.$pattern.$this->template_tag_right."/is", $content, $match);
  return $match;
 }
 /**
  * 模板文件后缀 
  */
 public function tpl_suffix() {
  $tpl_suffix = empty($this->conf[&#39;template_config&#39;][&#39;template_suffix&#39;]) ? 
       $this->tpl_suffix : 
       $this->conf[&#39;template_config&#39;][&#39;template_suffix&#39;] ;
  return $tpl_suffix;
 }
 /**
  * 此处不解释了
  * @return 
  */
 public function assign($key, $value) {
  $this->vars[$key] = $value;
 }
 /**
  * 渲染页面
  * @param 
  * 使用方法 1
  * $this->view->display(&#39;error&#39;, &#39;comm/&#39;);
  * 默认是指向TPL模版的跟目录,所以comm/就是 tpl/comm/error.html
  * 使用方法 2
  * $this->view->display(&#39;errorfile&#39;); 
  * 默认指向控制器固定的文件夹
  * 例如你的域名是 http://heartphp/admin/index, 那么正确路径就是tpl/admin/index/errorfile.html
  * @return 
  */
 public function display($filename = &#39;&#39;, $view_path = &#39;&#39;) {
  $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.&#39;模板不存在&#39;);
  //编译开始
  $this->view_path_param = $view_path;//用户传递过来的模版跟目录
  $this->compile();
 }
 /**
  * 编译控制器
  * @param 
  * @return 
  */
 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, &#39;&#39;, $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;
  }
 }
 /**
  * 读取当前项目配置文件
  */
 protected function read_config() {
  if(file_exists(SYSTEM_PATH.&#39;conf/config.php&#39;)) {
   @include SYSTEM_PATH.&#39;conf/config.php&#39;; 
   return $config;
  }
  return false;
 }
 /**
  * 解析模板语法
  * @param $str 内容
  * @param $compile_dirpath 模版编译目录
  * @param $vars_template_c_name 模版编译文件名
  * @return 编译过的PHP模板文件名
  */
 private function template_replace($str, $compile_dirpath, $vars_template_c_name) {
  if(empty($str)) core::show_error(&#39;模板内容为空!&#39;);
  //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.&#39;==&#39;.date(&#39;Y-m-d H:i:s&#39;, $tpl_filemtime).&#39;<br/>&#39;;
   //echo $compile_filemtime.&#39;==&#39;.date(&#39;Y-m-d H:i:s&#39;, $compile_filemtime);
   //如果文件过期编译 当模板标签有include并且有修改时 也重新编译
   //<{include file="public/left.html"}> 当修改include里的文件,非DEBUG模式时 如果不更改主文件 目前是不重新编译include里的文件,我在考虑是否也要更改,没想好,暂时这样,所以在开发阶段一定要开启DEBUG=1模式 要不然修改include文件无效 。 有点罗嗦,不知道表述清楚没
   if($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;
 }
 /**
  * 模板文件主体
  * @param string $str 内容
  * @return html
  */
 private function body_content($str) {
  //解析
  $str = $this->parse($str);
  $header_comment = "Create On##".time()."|Compiled from##".$this->template_path.$this->template_name;
  $content = "<? if(!defined(&#39;IS_HEARTPHP&#39;)) exit(&#39;Access Denied&#39;);/*{$header_comment}*/?>\r\n$str";
  return $content;
 }
 /**
  * 开始解析相关模板标签
  * @param $content 模板内容
  */
 private function parse($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 $content;
 }
 /**
  * echo 如果默认直接<{$config[&#39;domain&#39;]}> 转成 <?php echo $config[&#39;domain&#39;]?>
  */
 private function parse_echo($content) {
 }
 /**
  * 转换为PHP
  * @param $content html 模板内容
  * @return html 替换好的HTML
  */
 private function parse_php($content){
  if(empty($content)) return false;
  $content = preg_replace("/".$this->template_tag_left."(.+?)".$this->template_tag_right."/is", "<?php $1 ?>", $content);
  return $content;
 }
 /**
  * if判断语句
  * <{if empty($zhang)}>
  * zhang
  * <{elseif empty($liang)}>
  * liang
  * <{else}>
  * zhangliang
  * <{/if}>
  */
 private function parse_if($content) {
  if(empty($content)) return false;
  //preg_match_all("/".$this->template_tag_left."if\s+(.*?)".$this->template_tag_right."/is", $content, $match);
  $match = $this->preg_match_all("if\s+(.*?)", $content);
  if(!isset($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][$k], "<?php if({$v}) { ?>", $content);
  }
  return $content;
 }
 private function parse_elseif($content) {
  if(empty($content)) return false;
  //preg_match_all("/".$this->template_tag_left."elseif\s+(.*?)".$this->template_tag_right."/is", $content, $match);
  $match = $this->preg_match_all("elseif\s+(.*?)", $content);
  if(!isset($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][$k], "<?php } elseif ({$v}) { ?>", $content);
  }
  return $content;
 }
 /**
  * 解析 include include标签不是实时更新的 当主体文件更新的时候 才更新标签内容,所以想include生效 请修改一下主体文件
  * 记录一下 有时间开发一个当DEBUG模式的时候 每次执行删除模版编译文件
  * 使用方法 <{include file="www.phpddt.com"}>
  * @param $content 模板内容
  * @return html
  */
 private function parse_include($content) {
  if(empty($content)) return false;
  //preg_match_all("/".$this->template_tag_left."include\s+(.*?)".$this->template_tag_right."/is", $content, $match);
  $match = $this->preg_match_all("include\s+(.*?)", $content);
  if(!isset($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(&#39;=&#39;, $t);
    if(in_array($b[0], $this->tag_include)) {
     if(!empty($b[1])) {
      $new_tag[$b[0]] = str_replace("\"", "", $b[1]);
     } else {
      core::show_error(&#39;模板路径不存在!&#39;);
     }
    }
   }
   extract($new_tag);
   //查询模板文件
   foreach($this->conf[&#39;view_path&#39;] 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, &#39;&#39;, basename($file));
     $this->view_path_param = dirname($file).&#39;/&#39;;
     $compile_dirpath = $this->check_temp_compile();
     $include_file = $this->template_replace($c, $compile_dirpath, $inc_file);//解析
     break;
    } else {
     core::show_error(&#39;模板文件不存在,请仔细检查 文件:&#39;. $conf_view_tpl);
    }
   } 
   $content = str_replace($match[0][$match_key], &#39;<?php include("&#39;.$include_file.&#39;")?>&#39;, $content);
  }
  return $content;
 }
 /**
  * 解析 foreach
  * 使用方法 <{foreach from=$lists item=value key=kk}>
  * @param $content 模板内容
  * @return html 解析后的内容
  */
 private function parse_foreach($content) {
  if(empty($content)) return false;
  //preg_match_all("/".$this->template_tag_left."foreach\s+(.*?)".$this->template_tag_right."/is", $content, $match);
  $match = $this->preg_match_all("foreach\s+(.*?)", $content);
  if(!isset($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];
    }
   }
   $key = &#39;&#39;;
   extract($new_tag);
   $key = ($key) ? &#39;$&#39;.$key.&#39; =>&#39; : &#39;&#39; ;
   $s = &#39;<?php foreach(&#39;.$from.&#39; as &#39;.$key.&#39; $&#39;.$item.&#39;) { ?>&#39;;
   $content = $this->str_replace($match[0][$match_key], $s, $content);
  }
  return $content;
 }
 /**
  * 匹配结束 字符串
  */
 private function parse_comm($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(
   "<?php } ?>",
   "<?php } ?>",
   "<?php } else { ?>"
  );
  $content = preg_replace($search, $replace, $content);
  return $content;
 }
 /**
  * 检查编译目录 如果没有创建 则递归创建目录
  * @param string $path 文件完整路径
  * @return 模板内容
  */
 private function check_temp_compile() {
  //$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;
 }
 /**
  * 读文件
  * @param string $path 文件完整路径
  * @return 模板内容
  */
 private function read_file($path) {
  //$this->check_file_limits($path, &#39;r&#39;);
  if(($r = @fopen($path, &#39;r&#39;)) === false) {
   core::show_error(&#39;模版文件没有读取或执行权限,请检查!&#39;);
  }
  $content = fread($r, filesize($path));
  fclose($r);
  return $content;
 }
 /**
  * 写文件
  * @param string $filename 文件名
  * @param string $content 模板内容
  * @return 文件名
  */
 private function compile_file($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 &#39;开始编译了=====&#39;;
  $f = $dir.$filename.$this->tpl_compile_suffix;
  //$this->check_file_limits($f, &#39;w&#39;);
  if(($fp = @fopen($f, &#39;wb&#39;)) === false) {
   core::show_error($f.&#39;<br/>编译文件失败,请检查文件权限.&#39;);
  }
  //开启flock
  flock($fp, LOCK_EX + LOCK_NB);
  fwrite($fp, $content, strlen($content));
  flock($fp, LOCK_UN + LOCK_NB);
  fclose($fp);
  return $f;
 }
 /**
  * 这个检查文件权限函数 暂时废弃了
  * @param [$path] [路径]
  * @param [status] [w=write, r=read]
  */
 public function check_file_limits($path , $status = &#39;rw&#39;) {
  clearstatcache();
  if(!is_writable($path) && $status == &#39;w&#39;) {
   core::show_error("{$path}<br/>没有写入权限,请检查.");
  } elseif(!is_readable($path) && $status == &#39;r&#39;) {
   core::show_error("{$path}<br/>没有读取权限,请检查.");
  } elseif($status == &#39;rw&#39;) {//check wirte and read
   if(!is_writable($path) || !is_readable($path)) {
    core::show_error("{$path}<br/>没有写入或读取权限,请检查");
   }
  }
 }
 /**
  * 读取编译后模板的第一行 并分析成数组
  * @param string $filepath 文件路径
  * @param number $line  行数
  * @return 返回指定行数的字符串 
  */
 /*
 private function get_compile_header($filepath, $line = 0) {
  if(($file_arr = @file($filepath)) === false) {
   core::show_error($filepath.&#39;<br/>读取文件失败,请检查文件权限!&#39;);
  }
  return $file_arr[0];
 }
 */
 /**
  * 分析头部注释的日期
  * @param string $cotnent 编译文件头部第一行
  * @return 返回上一次日期 
  */
 /*
 private function get_compile_header_comment($content) {
  preg_match("/\/\*(.*?)\*\//", $content, $match);
  if(!isset($match[1]) || empty($match[1])) core::show_error(&#39;编译错误!&#39;); 
  $arr = explode(&#39;|&#39;, $match[1]);
  $arr_date = explode(&#39;##&#39;, $arr[0]);
  return $arr_date[1];
 }
 */
 /**
  * 获取模板完整路径 并返回已存在文件
  * @param string $filename 文件名
  * @param string $view_path 模板路径 
  * @return 
  */
 private function get_tpl($filename, $view_path) {
  empty($filename) && $filename = $this->tpl_name;
  //遍历模板路径
  foreach($this->conf[&#39;view_path&#39;] 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.&#39;模板不存在&#39;);
   }
  }
 }
 /**
  * 获取模板路径
  * @param string $path 主目录
  * @return URL D和M的拼接路径
  */
 private function get_tpl_path($path = &#39;&#39;) {
  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(&#39;/&#39;, $path_arr) : core::show_error(&#39;获取模板路径失败!&#39;) ;
  return $path.$newpath.&#39;/&#39;;
 }
 /**
  * 创建目录
  * @param string $path 目录
  * @return 
  */
 private function create_dir($path, $mode = 0777){
  if(is_dir($path)) return false;
  $dir_arr = explode(&#39;/&#39;, $path);
  $dir_arr = array_filter($dir_arr);
  $allpath = &#39;&#39;;
  $newdir = $this->template_c;
  foreach($dir_arr as $dir) {
   $allpath = $newdir.&#39;/&#39;.$dir;
   if(!is_dir($allpath)) {
    $newdir = $allpath;
    if(!@mkdir($allpath, $mode)) {
     core::show_error( $allpath.&#39;<br/>创建目录失败,请检查是否有可都写权限!&#39;);
    }
    chmod($allpath, $mode);
   } else {
    $newdir = $allpath;
   }
  }
  return true;
 }
 public function __destruct(){
  $this->vars = null;
  $this->view_path_param = null;
 }
}

总结:以上就是本篇文的全部内容,希望能对大家的学习有所帮助。

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PHP's Impact: Web Development and BeyondPHP's Impact: Web Development and BeyondApr 18, 2025 am 12:10 AM

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

How does PHP type hinting work, including scalar types, return types, union types, and nullable types?How does PHP type hinting work, including scalar types, return types, union types, and nullable types?Apr 17, 2025 am 12:25 AM

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values ​​and handle functions that may return null values.

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