详解WordPress中过滤链接与过滤SQL语句的方法,
详解WordPress中过滤链接与过滤SQL语句的方法,
esc_url()(过滤链接)
很多 URL 会有一些小错误,用 esc_url() 函数可以屏蔽或者修正这些错误,并且可以拒绝不安全的协议。
esc_url() 函数的工作内容:
默认拒绝不是下面协议的 URL:defaulting to http、https、ftp、ftps、mailto、news、irc、gopher、nntp、feed 和 telnet
删除无效字符和危险的字符
将字符转换成 HTML 实体字符
使用方法
esc_url( $url, $protocols, $_context );
参数
$url
(字符串)(必须)要被过滤的 URL.
默认值:None
$protocols
(数组)(可选)可以接收协议的数组,如果没有设置,则默认为:defaulting to http、https、ftp、ftps、mailto、news、irc、gopher、nntp、feed 和 telnet.
默认值:None
$_context
(字符串)(可选)如何返回 URL.
默认值:(字符串)display
返回值
(字符串)返回过滤后的链接。
例子
<?php echo esc_url( 'www.endskin.com' );//输出:http://www.endskin.com ?>
更多
此函数位于:wp-includes/formatting.php
esc_sql()(过滤 Sql 语句)
esc_sql() 用来过滤准备添加到 Sql 语句里边的字符串,防止 Sql 注入和 Sql 语句被数据干扰出现异常。
用法
esc_sql( $data );
参数
$data
(字符串)(必须)要过滤的字符串。
默认值:None
返回值
(字符串)返回过滤后的字符串,可以直接添加到 Sql 语句里。
例子
$name = esc_sql( $name ); $status = esc_sql( $status ); $wpdb->get_var( "SELECT something FROM table WHERE foo = '$name' and status = '$status'" );
更多
此函数位于:wp-includes/formatting.php
您可能感兴趣的文章:
- WordPress中转义HTML与过滤链接的相关PHP函数使用解析
- 详解WordPress开发中过滤属性以及Sql语句的函数使用

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

There are four ways to adjust the WordPress article list: use theme options, use plugins (such as Post Types Order, WP Post List, Boxy Stuff), use code (add settings in the functions.php file), or modify the WordPress database directly.

WordPress IP blocking plugin selection is crucial. The following types can be considered: based on .htaccess: efficient, but complex operation; database operation: flexible, but low efficiency; firewall: high security performance, but complex configuration; self-written: highest control, but requires more technical level.

WordPress editing dates can be canceled in three ways: 1. Install the Enable Post Date Disable plug-in; 2. Add code in the functions.php file; 3. Manually edit the post_modified column in the wp_posts table.

To build a website using WordPress hosting, you need to: select a reliable hosting provider. Buy a domain name. Set up a WordPress hosting account. Select a topic. Add pages and articles. Install the plug-in. Customize your website. Publish your website.

The steps to create a custom header in WordPress are as follows: Edit the theme file "header.php". Add your website name and description. Create a navigation menu. Add a search bar. Save changes and view your custom header.

A step-by-step guide to replacing a header image of WordPress: Log in to the WordPress dashboard and navigate to Appearance >Theme. Select the topic you want to edit and click Customize. Open the Theme Options panel and look for the Site Header or Header Image options. Click the Select Image button and upload a new head image. Crop the image and click Save and Crop. Click the Save and Publish button to update the changes.

WordPress Error Resolution Guide: 500 Internal Server Error: Disable the plug-in or check the server error log. 404 Page not found: Check permalink and make sure the page link is correct. White Screen of Death: Increase the server PHP memory limit. Database connection error: Check the database server status and WordPress configuration. Other tips: enable debug mode, check error logs, and seek support. Prevent errors: regularly update WordPress, install only necessary plugins, regularly back up your website, and optimize website performance.

WordPress templates quickly create professional websites. The steps to import a template include: select and download the template. Log in to the WordPress dashboard. Select Theme from the Appearance menu. Click "Add New Theme". Click "Upload topic" and select the downloaded template .zip file. Click "Install Now". Click the "Activate" button. Customize the templates through the Customize menu.
