2.wp-blog-header.php文件分析(一)
二.wp-blog-header.php文件分析(一)
前一章我们知道,index文件只做了声明一个确认加载的常量,之后就是包含wp-blog-header文件
//wp-blog-header.php所有内容 <?php if ( !isset($wp_did_header) ) { //确认访问header $wp_did_header = true; //"./wp-load.php" require_once( dirname(__FILE__) . '/wp-load.php' ); wp(); //"./wp-include/template-loder.php" require_once( ABSPATH . WPINC . '/template-loader.php' ); } ?>
由上面代码我们可以把wp-blog-header.php分为三部分。
1.加载当前目录下的wp-load.php文件
2.调用wp()函数
3.加载wp-include目录下的template-loder.php文件
我们逐步分析,先从wp-load.php开始,这个文件也非常简单,上来设置根目录和错误报告的方式,再然后就是包含wp-config.php这个文件了。
define( 'ABSPATH', dirname(__FILE__) . '/' ); //wordpress根目录 //看根目录下的wp-config.php文件存在否,在就包含,没再就会对去掉根目录常量中的'/'并重新包含,再找不到可就进入安装页面了。 if ( file_exists( ABSPATH . 'wp-config.php') ) { require_once( ABSPATH . 'wp-config.php' ); } elseif ( file_exists( dirname(ABSPATH) . '/wp-config.php' ) && ! file_exists( dirname(ABSPATH) . '/wp-settings.php' ) ) { require_once( dirname(ABSPATH) . '/wp-config.php' ); } else { //安装代码,由于不研究安装,暂不写了 }
我们这里默认已经安装了wordpress,所以程序应顺利加载了wp-config.php这个文件了,这文件里是数据库的配置信息和身份密钥,再有就是丫又加载了wp-include目录下的wp-setting.php文件。
//数据库信息和身份密钥就略过了 //看吧,明明在wp-load.php文件下定义了根目录常量了,这里由于要加载wp-settings.php又做了次判断,以确保意外发生,我们要学习这种严谨的编程习惯。 if ( !defined('ABSPATH') ) define('ABSPATH', dirname(__FILE__) . '/'); /** 设置 WordPress 变量和包含文件。 */ require_once(ABSPATH . 'wp-settings.php');

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

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

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





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

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

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

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
