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
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; $i$continue_flag = 0;if(count($this->ignore_lines) > 0){for($j=0; $jignore_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 $return;}//preg搜索方法不支持ignore_linesfunction preg_search($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 $return;}//ereg搜索方法也不支持ignore_linesfunction ereg_search($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; $ifiles); $i++){if($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; $idirectories); $i++){$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.phpinclude('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。