<?php
error_reporting(63);
/***************************************
** Title........: Search and replace utility
** Filename.....: search.replace.php
** Author.......: Richard Heyes
** Version......: 0.9
** Notes........:
** Last changed.: 23/04/2000
** Last change..:
***************************************/

        $find = '';                                     // Find this.
        $replace = '';                                  // And replace with this.
        $ignore_lines = '';                             // Can't use commas in this.
        $directories = '';                              // Comma seperated if multiple
        $files = '';                                    // Search and replace in these files.
        $include_subdir = 0;                            // Include subdirectories or not. 1/0

/***************************************
** The main search and replace routine.
***************************************/
        function search_replace($filename){
                global $find,$replace,$ignore;
                $occurences = 0;
                $file_array = file($filename);
                for($i=0; $i<count($file_array); $i++){
                        $continue_flag = 0;
                        for($j=0; $j<count($ignore); $j++){
                                if(substr($file_array[$i],0,strlen($ignore[$j])) == $ignore[$j]) $continue_flag = 1;
                        }
                        if($continue_flag == 1) continue;
                        $occurences += count(explode($find, $file_array[$i])) - 1;
                        $file_array[$i] = str_replace($find, $replace, $file_array[$i]);
                }
                if($occurences > 0) $return = array($occurences, implode('', $file_array)); else $return = FALSE;
                return $return;
        }

/***************************************
** Function for writing out a new file.
***************************************/
        function writeout($filename, $contents){
                if($fp = fopen($filename, 'w')){
                        fwrite($fp, $contents);
                        fclose($fp);
                }else{
                        die('Could not open file: '.$filename);
                }
        }

/***************************************
** First do whatever files are specified,
** and/or if directories are specified,
** do those too.
***************************************/
        $occurences = 0;
        $ignore = explode(',', $ignore_lines);
        if($find != ''){
                if(!empty($files)){
                        if(ereg(',', $files)) $files = explode(',', $files); else $files = array($files);
                        for($i=0;$i<count($files); $i++){
                                if($files[$i] == '.' OR $files[$i] == '..') continue;
                                if(is_dir($files[$i]) == TRUE) continue;
                                $newfile = search_replace($files[$i]);
                                if(is_array($newfile) == TRUE){
                                        writeout($files[$i], $newfile[1]);
                                        $occurences += $newfile[0];
                                }
                        }
                }

                if(!empty($directories)){
                        if(ereg(',', $directories)) $directories = explode(',', $directories); else $directories = array($directories);
                        for($i=0;$i<count($directories); $i++){
                                $dh = opendir($directories[$i]);
                                while($file = readdir($dh)){
                                        if($file == '.' OR $file == '..') continue;

                                        if(is_dir($directories[$i].$file) == TRUE AND $include_subdir == 1){
                                                $directories[] = $directories[$i].$file.'/';
                                                continue;
                                        }elseif(is_dir($directories[$i].$file) == TRUE){
                                                continue;
                                        }

                                        $newfile = search_replace($directories[$i].$file);
                                        if(is_array($newfile) == TRUE){
                                                writeout($directories[$i].$file, $newfile[1]);
                                                $occurences += $newfile[0];
                                        }
                                }
                        }
                }
        }
        echo 'Found '.$occurences.' occurences.';
?>