来源：自学PHP网 时间：2014-12-25 09:57 作者： 阅读:次
[导读] 搜索和替换文件或目录的一个好类--很实用,这是个非常有用的程序，可以对文本文件进行特定的搜索，并以特定的文字替换指定的文字，举个例子说如果我这篇文章里有一个字全部打错...
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这是个非常有用的程序，可以对文本文件进行特定的搜索，并以特定的文字替换指定的文字，举个例子说如果我这篇文章里有一个字全部打错了，有几十处，要一一找出来修改是件很麻烦的事，用下面这个就可以轻松搞定。--teaman.oso.com.cn
类文件 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 $last_error; //以下进行函数定义和设置 function search_replace($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; } //获取最后的错误 function get_last_error(){ return $this->last_error; } //设置FIND变量 function set_find($find){ $this->find = $find; } //设置replace变量 function set_replace($replace){ $this->replace = $replace; } //设置FILE变量 function set_files($files){ $this->files = $files; } //设置目录变量 function set_directories($directories){ $this->directories = $directories; } //设置目录变量 set_include_subdir function set_include_subdir($include_subdir){ $this->include_subdir = $include_subdir; } //设置ignore_lines变量 function set_ignore_lines($ignore_lines){ $this->ignore_lines = $ignore_lines; } //确定是哪一种搜索方式 function set_search_function($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 : $this->last_error = 'Invalid search function specified'; return FALSE; break; } } //以下为搜索和替换程序的主文件 function search($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 $return; } //使用quick(快速)搜索方法时，没有igonre_lines功能 function quick_search($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 $return; } //写新文件 function writeout($filename, $contents){ if($fp = @fopen($filename, 'w')){ fwrite($fp, $contents); fclose($fp); }else{ $this->last_error = 'Could not open file: '.$filename; } } //由do_search调用，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 += $newfile[0]; } } } //由do_search()调用，排出所有要搜索的目录 function do_directories($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 += $newfile[0]; } } } } //调用这个do_search()就可以开始对文件或目录进行搜索 function do_search(){ if($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 ?> //下面是调用该类的例子说明,请存为example.php <?php include('search_replace.inc'); //将文件包括进来 //建立新物件，设置搜索条件、最后返回搜索结果 $sr = new search_replace('asp', 'php', array('test.txt')); //调用搜索与替换 $sr->set_search_function('quick'); //设置搜索条件 $sr->do_search(); $sr->set_find('another'); $sr->do_search(); //下面是定制的返回信息 header('Content-Type: text/plain'); echo '发现和替换以下几个地方: '.$sr->get_num_occurences()."\r\n"; echo '啊，错误发生如下.............: '.$sr->get_last_error()."\r\n"; ?> //将以下文字存为test.txt,注意text.txt必须是可读可写的 "我非常喜欢asp,它简单易学，功能强，听说asp已经占了大半市场，asp真好。" 此时，如果您打开exampe.php 就会出现下面这些： 发现和替换以下几个地方:3 啊，错误发生如下..........: 查看test.txt文件，果然出现asp的地方被php替换了。 |
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