完美解决thinkphp验证码出错无法显示的方法_PHP
本文实例讲述了完美解决thinkphp验证码出错无法显示的方法。分享给大家供大家参考。具体分析如下:
今天做到验证码这一块,想到tp自带验证图片,大喜,但鼓捣半天不出来,一直是个小 X的样子.
官方提示如下:
如果无法显示验证码,请检查:
① PHP是否已经安装GD库支持;
② 输出之前是否有任何的输出(尤其是UTF8的BOM头信息输出);
③ Image类库是否正确导入;
④ 如果是中文验证码检查是否有拷贝字体文件到类库所在目录;
但是测试半天,不行!网上找来一个能用的方法,放到一个文件里执行可用,进入到tp里面通过index.php入口进去就是小 x,然后能用的方法所在文件把编码改为utf-8 含有bom的编码也会出现小 X,其他编码都会出来验证码,初步判断是tp执行到输出验证码的前面有内容输出,主管想到了清除之前的输出就行.
类似:
代码如下:
ob_start();//不加这个是不行的(貌似不加可以)
echo "不要显示";
ob_end_clean();
echo "只要显示这";
?>
解决方法,修改生成验证码方法:
代码如下:
//生成验证码
public function verifyimg(){
import("ORG.Util.Image");
ob_end_clean();
Image::buildImageVerify();
}
希望本文所述对大家基于ThinkPHP框架的PHP程序设计有所帮助。

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

Solution to the problem that Win11 system cannot install Chinese language pack With the launch of Windows 11 system, many users began to upgrade their operating system to experience new functions and interfaces. However, some users found that they were unable to install the Chinese language pack after upgrading, which troubled their experience. In this article, we will discuss the reasons why Win11 system cannot install the Chinese language pack and provide some solutions to help users solve this problem. Cause Analysis First, let us analyze the inability of Win11 system to

As smartphone technology continues to develop, mobile phones play an increasingly important role in our daily lives. As a flagship phone focusing on gaming performance, the Black Shark phone is highly favored by players. However, sometimes we also face the situation that the Black Shark phone cannot be turned on. At this time, we need to take some measures to solve this problem. Next, let us share five tips to teach you how to solve the problem of Black Shark phone not turning on: Step 1: Check the battery power. First, make sure your Black Shark phone has enough power. It may be because the phone battery is exhausted

With the continuous development of social media, Xiaohongshu has become a platform for more and more young people to share their lives and discover beautiful things. Many users are troubled by auto-save issues when posting images. So, how to solve this problem? 1. How to solve the problem of automatically saving pictures when publishing on Xiaohongshu? 1. Clear the cache First, we can try to clear the cache data of Xiaohongshu. The steps are as follows: (1) Open Xiaohongshu and click the "My" button in the lower right corner; (2) On the personal center page, find "Settings" and click it; (3) Scroll down and find the "Clear Cache" option. Click OK. After clearing the cache, re-enter Xiaohongshu and try to post pictures to see if the automatic saving problem is solved. 2. Update the Xiaohongshu version to ensure that your Xiaohongshu

Everyone knows that if the computer cannot load the driver, the device may not work properly or interact with the computer correctly. So how do we solve the problem when a prompt box pops up on the computer that the driver cannot be loaded on this device? The editor below will teach you two ways to easily solve the problem. Unable to load the driver on this device Solution 1. Search for "Kernel Isolation" in the Start menu. 2. Turn off Memory Integrity, and it will prompt "Memory Integrity has been turned off. Your device may be vulnerable." Click behind to ignore it, and it will not affect the use. 3. The problem can be solved after restarting the machine.

What should I do if Google Chrome does not display the verification code image? Sometimes you need a verification code to log in to a web page using Google Chrome. Some users find that Google Chrome cannot display the content of the image properly when using image verification codes. What should be done? The editor below will introduce how to deal with the Google Chrome verification code not being displayed. I hope it will be helpful to everyone! Method introduction: 1. Enter the software, click the "More" button in the upper right corner, and select "Settings" in the option list below to enter. 2. After entering the new interface, click the "Privacy Settings and Security" option on the left. 3. Then click "Website Settings" on the right

To run the ThinkPHP project, you need to: install Composer; use Composer to create the project; enter the project directory and execute php bin/console serve; visit http://localhost:8000 to view the welcome page.

ThinkPHP has multiple versions designed for different PHP versions. Major versions include 3.2, 5.0, 5.1, and 6.0, while minor versions are used to fix bugs and provide new features. The latest stable version is ThinkPHP 6.0.16. When choosing a version, consider the PHP version, feature requirements, and community support. It is recommended to use the latest stable version for best performance and support.

Steps to run ThinkPHP Framework locally: Download and unzip ThinkPHP Framework to a local directory. Create a virtual host (optional) pointing to the ThinkPHP root directory. Configure database connection parameters. Start the web server. Initialize the ThinkPHP application. Access the ThinkPHP application URL and run it.
