Home Backend Development PHP Tutorial 搜索和替换文件或目录的一个好类--很实用

搜索和替换文件或目录的一个好类--很实用

Jun 01, 2016 pm 02:30 PM

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


    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                 $continue_flag = 0;
                if(count($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_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; $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.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。
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1665
14
PHP Tutorial
1269
29
C# Tutorial
1249
24
PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1? Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1? Apr 17, 2025 am 12:06 AM

In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values ​​to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

PHP in Action: Real-World Examples and Applications PHP in Action: Real-World Examples and Applications Apr 14, 2025 am 12:19 AM

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP: A Key Language for Web Development PHP: A Key Language for Web Development Apr 13, 2025 am 12:08 AM

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

The Enduring Relevance of PHP: Is It Still Alive? The Enduring Relevance of PHP: Is It Still Alive? Apr 14, 2025 am 12:12 AM

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

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.

PHP and Python: Code Examples and Comparison PHP and Python: Code Examples and Comparison Apr 15, 2025 am 12:07 AM

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

PHP vs. Other Languages: A Comparison PHP vs. Other Languages: A Comparison Apr 13, 2025 am 12:19 AM

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

See all articles