PHP ereg_replace()函数的工作原理解析
我们在学习PHP ereg_replace()函数原型:string ereg_replace (string $pattern, string $replacement, string $string)
string eregi_replace (string $pattern, string $replacement, string $string)
PHP ereg_replace()函数c,并将所匹配结果替换为$replacement。当$pattern中包含模式单元(或子模式)时,$replacement中形如“1”或“$1”的位置将依次被这些子模式所匹配的内容替换。而“”或“$0”是指整个的匹配字符串的内容。需要注意的是,在双引号中反斜线作为转义符使用,所以必须使用“\0”,“\1”的形式。
eregi_replace()和PHP ereg_replace()函数的功能一致,只是前者忽略大小写。代码6.6是本函数的应用实例,这段代码演示了如何对程序源代码做简单的清理工作。
PHP ereg_replace()函数代码6.6 源代码的清理
<ol class="dp-xml"> <li class="alt"><span><span class="tag"><span> ?php </span></span></span></li> <li> <span>$</span><span class="attribute">lines</span><span> = </span><span class="attribute-value">file</span><span>('source.php'); //将文件读入数组中 </span> </li> <li class="alt"> <span>for($</span><span class="attribute">i</span><span>=</span><span class="attribute-value">0</span><span>; $i</span><span class="tag"><span class="tag-name">count</span><span>($lines); $i++) </span></span> </li> <li><span>{ </span></li> <li class="alt"><span>//将行末以“\”或“#”开头的注释去掉 </span></li> <li><span>$lines[$i] = eregi_replace("(//|#).*$", "", $lines[$i]); </span></li> <li class="alt"><span>//将行末的空白消除 </span></li> <li><span>$lines[$i] = eregi_replace("[ nrtvf]*$", "rn", $lines[$i]); </span></li> <li class="alt"><span>} </span></li> <li><span>//整理后输出到页面 </span></li> <li class="alt"><span>echo htmlspecialchars(join("",$lines)); </span></li> <li> <span class="tag">?></span><span> </span> </li> </ol>
以上就是PHP ereg_replace()函数的相关用法介绍。

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

To work on file upload we are going to use the form helper. Here, is an example for file upload.

In this chapter, we are going to learn the following topics related to routing ?

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Validator can be created by adding the following two lines in the controller.
