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    1. 明輝手游網中心:是一個免費提供流行視頻軟件教程、在線學習分享的學習平臺!

      搜索與替換文件或目錄的一個好類--很實用

      [摘要]這是個非常有用的程序,可以對文本文件進行特定的搜索,并以特定的文字替換指定的文字,舉個例子說如果我這篇文章里有一個字全部打錯了,有幾十處,要一一找出來修改是件很麻煩的事,用下面這個就可以輕松搞定。--teaman.oso.com.cn 類文件 search_replace.inc <?ph...
      這是個非常有用的程序,可以對文本文件進行特定的搜索,并以特定的文字替換指定的文字,舉個例子說如果我這篇文章里有一個字全部打錯了,有幾十處,要一一找出來修改是件很麻煩的事,用下面這個就可以輕松搞定。--teaman.oso.com.cn
      類文件 search_replace.inc
      <?php


              class search_replace{

                      var $find;
                      var $replace;
                      var $files;
                      var $directories;
                      var $include_subdir;
                      var $ignore_lines;
                      var $ignore_sep;
                      var $occurences;
                      var $search_function;
                      var $last_error;

              //以下進行函數定義和設置
               
                      function search_replace($find, $replace, $files, $directories = '', $include_subdir = 1, $ignore_lines = array()){

                              $this->find            = $find;
                              $this->replace         = $replace;
                              $this->files           = $files;
                              $this->directories     = $directories;
                              $this->include_subdir  = $include_subdir;
                              $this->ignore_lines    = $ignore_lines;

                              $this->occurences      = 0;
                              $this->search_function = 'search';
                              $this->last_error      = '';

                      }

              /***************************************
              ** Accessor for retrieving occurences.
              ***************************************/
                      function get_num_occurences(){
                              return $this->occurences;
                      }

              //獲取最后的錯誤
                      function get_last_error(){
                              return $this->last_error;
                      }

              //設置FIND變量
                      function set_find($find){
                              $this->find = $find;
                      }

              //設置replace變量
                      function set_replace($replace){
                              $this->replace = $replace;
                      }

              //設置FILE變量
                      function set_files($files){
                              $this->files = $files;
                      }

              //設置目錄變量
                      function set_directories($directories){
                              $this->directories = $directories;
                      }

              //設置目錄變量 set_include_subdir
                      function set_include_subdir($include_subdir){
                              $this->include_subdir = $include_subdir;
                      }

              //設置ignore_lines變量
                      function set_ignore_lines($ignore_lines){
                              $this->ignore_lines = $ignore_lines;
                      }

              //確定是哪一種搜索方式
                      function set_search_function($search_function){
                              switch($search_function){
                                      case 'normal': $this->search_function = 'search';
                                                     return TRUE;
                                                     break;

                                      case 'quick' : $this->search_function = 'quick_search';
                                                     return TRUE;
                                                     break;

                                      case 'preg'  : $this->search_function = 'preg_search';
                                                     return TRUE;
                                                     break;

                                      case 'ereg'  : $this->search_function = 'ereg_search';
                                                     return TRUE;
                                                     break;

                                      default      : $this->last_error      = 'Invalid search function specified';
                                                     return FALSE;
                                                     break;
                              }
                      }


              //以下為搜索和替換程序的主文件
                      function search($filename){

                              $occurences = 0;
                              $file_array = file($filename);

                              for($i=0; $i<count($file_array); $i++){
                                      $continue_flag = 0;
                                      if(count($this->ignore_lines) > 0){
                                              for($j=0; $j<count($this->ignore_lines); $j++){
                                                      if(substr($file_array[$i],0,strlen($this->ignore_lines[$j])) == $this->ignore_lines[$j]) $continue_flag = 1;
                                              }
                                      }
                                      if($continue_flag == 1) continue;
                                      $occurences += count(explode($this->find, $file_array[$i])) - 1;
                                      $file_array[$i] = str_replace($this->find, $this->replace, $file_array[$i]);
                              }
                              if($occurences > 0) $return = array($occurences, implode('', $file_array)); else $return = FALSE;
                              return $return;

                      }

              //使用quick(快速)搜索方法時,沒有igonre_lines功能
                      function quick_search($filename){

                              clearstatcache();

                              $file       = fread($fp = fopen($filename, 'r'), filesize($filename)); fclose($fp);
                              $occurences = count(explode($this->find, $file)) - 1;
                              $file       = str_replace($this->find, $this->replace, $file);

                              if($occurences > 0) $return = array($occurences, $file); else $return = FALSE;
                              return $return;

                      }

              //preg搜索方法不支持ignore_lines
                      function preg_search($filename){

                              clearstatcache();

                              $file       = fread($fp = fopen($filename, 'r'), filesize($filename)); fclose($fp);
                              $occurences = count($matches = preg_split($this->find, $file)) - 1;
                              $file       = preg_replace($this->find, $this->replace, $file);

                              if($occurences > 0) $return = array($occurences, $file); else $return = FALSE;
                              return $return;

                      }

              //ereg搜索方法也不支持ignore_lines
                      function ereg_search($filename){

                              clearstatcache();

                              $file = fread($fp = fopen($filename, 'r'), filesize($filename)); fclose($fp);

                              $occurences = count($matches = split($this->find, $file)) -1;
                              $file       = ereg_replace($this->find, $this->replace, $file);

                              if($occurences > 0) $return = array($occurences, $file); else $return = FALSE;
                              return $return;

                      }

              //寫新文件
                      function writeout($filename, $contents){

                              if($fp = @fopen($filename, 'w')){
                                      fwrite($fp, $contents);
                                      fclose($fp);
                              }else{
                                      $this->last_error = 'Could not open file: '.$filename;
                              }

                      }

              //由do_search調用,排出所有要搜索的文件
                      function do_files($ser_func){
                              if(!is_array($this->files)) $this->files = explode(',', $this->files);
                              for($i=0; $i<count($this->files); $i++){
                                      if($this->files[$i] == '.' OR $this->files[$i] == '..') continue;
                                      if(is_dir($this->files[$i]) == TRUE) continue;
                                      $newfile = $this->$ser_func($this->files[$i]);
                                      if(is_array($newfile) == TRUE){
                                              $this->writeout($this->files[$i], $newfile[1]);
                                              $this->occurences += $newfile[0];
                                      }
                              }
                      }

              //由do_search()調用,排出所有要搜索的目錄
                      function do_directories($ser_func){
                              if(!is_array($this->directories)) $this->directories = explode(',', $this->directories);
                              for($i=0; $i<count($this->directories); $i++){
                                      $dh = opendir($this->directories[$i]);
                                      while($file = readdir($dh)){
                                              if($file == '.' OR $file == '..') continue;

                                              if(is_dir($this->directories[$i].$file) == TRUE){
                                                      if($this->include_subdir == 1){
                                                              $this->directories[] = $this->directories[$i].$file.'/';
                                                              continue;
                                                      }else{
                                                              continue;
                                                      }
                                              }

                                              $newfile = $this->$ser_func($this->directories[$i].$file);
                                              if(is_array($newfile) == TRUE){
                                                      $this->writeout($this->directories[$i].$file, $newfile[1]);
                                                      $this->occurences += $newfile[0];
                                              }
                                      }
                              }
                      }

              //調用這個do_search()就可以開始對文件或目錄進行搜索
                      function do_search(){
                              if($this->find != ''){
                                      if((is_array($this->files) AND count($this->files) > 0) OR $this->files != '') $this->do_files($this->search_function);
                                      if($this->directories != '')                                       $this->do_directories($this->search_function);
                              }
                      }

              } // End of class
      ?>

      //下面是調用該類的例子說明,請存為example.php

      <?php

              include('search_replace.inc');  //將文件包括進來

      //建立新物件,設置搜索條件、最后返回搜索結果

              $sr = new search_replace('asp', 'php', array('test.txt')); //調用搜索與替換
              $sr->set_search_function('quick');   //設置搜索條件
              $sr->do_search();

              $sr->set_find('another');
              $sr->do_search();

      //下面是定制的返回信息
              header('Content-Type: text/plain');
              echo '發現和替換以下幾個地方: '.$sr->get_num_occurences()."\r\n";
              echo '啊,錯誤發生如下.............: '.$sr->get_last_error()."\r\n";
      ?>

      //將以下文字存為test.txt,注意text.txt必須是可讀可寫的
      "我非常喜歡asp,它簡單易學,功能強,聽說asp已經占了大半市場,asp真好。"

      此時,如果您打開exampe.php 就會出現下面這些:
      發現和替換以下幾個地方:3
      啊,錯誤發生如下..........:      
      查看test.txt文件,果然出現asp的地方被php替換了。



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