Backend Development
PHP Tutorial
How to send multiple emails with image verification codes using PHP
How to send multiple emails with image verification codes using PHP
Sep 13, 2023 am 11:55 AM
How to use PHP to send multiple emails with image verification codes, specific code examples are required
In modern society, email has become an important communication tool. Sometimes we encounter situations where we need to send emails with verification codes, such as registration confirmation emails, password reset emails, etc. In order to increase security and user experience, we often use image verification codes. This article will introduce how to use PHP to send multiple emails with image verification codes, and provide specific code examples.
First, we need to introduce the PHP Mailer library, which is a very popular PHP library for sending emails. After introducing this library into the code, we can easily use the SMTP protocol to send emails.
Next, we need to generate a verification code image. We can use PHP's GD library to generate image verification codes. The GD library provides some functions to draw graphics and text, allowing us to easily generate verification code images. The following is a sample code for generating a verification code image:
<?php
session_start();
$code = ""; // 保存生成的驗(yàn)證碼
$width = 200; // 圖片寬度
$height = 100; // 圖片高度
$codeLength = 4; // 驗(yàn)證碼長(zhǎng)度
$image = imagecreate($width, $height);
$bgColor = imagecolorallocate($image, 255, 255, 255); // 設(shè)置背景顏色為白色
$fontColor = imagecolorallocate($image, 0, 0, 0); // 設(shè)置字體顏色為黑色
$fonts = array('arial.ttf', 'verdana.ttf', 'times.ttf'); // 字體文件列表
for ($i = 0; $i < $codeLength; $i++) {
$font = $fonts[array_rand($fonts)]; // 從字體文件列表中隨機(jī)選擇字體文件
$char = chr(rand(65, 90)); // 生成一個(gè)隨機(jī)字母
$code .= $char;
imagettftext($image, 30, rand(-30, 30), 20 + $i * $width / $codeLength, 50, $fontColor, $font, $char); // 在圖片上繪制文字
}
$_SESSION['code'] = $code; // 將生成的驗(yàn)證碼保存到session中
header('Content-Type: image/jpeg');
imagejpeg($image); // 輸出圖片
imagedestroy($image);
?>The above code will generate a 200x100 verification code image and save the verification code to the session.
Next, we can send emails with verification code images through the PHP Mailer library. The following is a sample code:
<?php
require 'vendor/autoload.php'; // 引入PHP Mailer庫(kù)
use PHPMailerPHPMailerPHPMailer;
// 郵件服務(wù)器配置
$mail = new PHPMailer();
$mail->isSMTP();
$mail->Host = 'smtp.example.com'; // 設(shè)置SMTP服務(wù)器地址
$mail->Port = 465; // 設(shè)置SMTP服務(wù)器端口
$mail->SMTPSecure = 'ssl'; // 設(shè)置加密方式（ssl或者tls）
$mail->SMTPAuth = true; // 是否使用SMTP身份驗(yàn)證
$mail->Username = 'your_email@example.com'; // 郵箱用戶名
$mail->Password = 'your_password'; // 郵箱密碼
// 接收人信息
$recipient = 'recipient@example.com'; // 接收人郵箱地址
$name = 'Recipient Name'; // 接收人姓名
// 郵件內(nèi)容
$mail->isHTML(true);
$mail->Subject = '驗(yàn)證碼郵件';
$mail->Body = '您的驗(yàn)證碼是：<img src="/static/imghw/default1.png" data-src="http://example.com/captcha.php" class="lazy" alt="驗(yàn)證碼">';
// 發(fā)送郵件
$mail->setFrom('your_email@example.com', 'Your Name'); // 發(fā)件人信息
$mail->addAddress($recipient, $name); // 接收人信息
$mail->send(); // 發(fā)送郵件
?>The above code uses the PHP Mailer library to send emails and inserts a verification code image in the email body. It should be noted that http://example.com/captcha.php is the address where the verification code image is generated and needs to be modified according to the actual situation.
In practical applications, we can encapsulate the above code into functions to facilitate calling in other places. For example, we can write a sendEmailWithCaptcha function to send an email with an image verification code.
<?php
function sendEmailWithCaptcha($recipient, $name) {
// 生成驗(yàn)證碼圖片，并將驗(yàn)證碼保存到session中
// ...
// 發(fā)送郵件
// ...
}
?>The above are the detailed steps and specific code examples on how to use PHP to send multiple emails with image verification codes.
The above is the detailed content of How to send multiple emails with image verification codes using PHP. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
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)
What should I do if Google Chrome does not display the verification code image? Chrome browser does not display the verification code?
Mar 13, 2024 pm 08:55 PM
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
Can virtual numbers receive verification codes?
Jan 02, 2024 am 10:22 AM
The virtual number can receive the verification code. As long as the mobile phone number filled in during registration complies with the regulations and the mobile phone number can be connected normally, you can receive the SMS verification code. However, you need to be careful when using virtual mobile phone numbers. Some websites do not support virtual mobile phone number registration, so you need to choose a regular virtual mobile phone number service provider.
Verification codes can't stop robots! Google AI can accurately identify blurry text, while GPT-4 pretends to be blind and asks for help
Apr 12, 2023 am 09:46 AM
“The most annoying thing is all kinds of weird (or even perverted) verification codes when you log into a website.” Now, there is good news and bad news. The good news is: AI can do this for you. If you don’t believe me, here are three real cases of increasing recognition difficulty: And these are the answers given by a model called “Pix2Struct”: Are they all accurate and word for word? Some netizens lamented: Sure, the accuracy is better than mine. So can it be made into a browser plug-in? ? Yes, some people said: Even though these cases are relatively simple, if you just fine-tune it, I can't imagine how powerful the effect will be. So, the bad news is - the verification code will soon be unable to stop the robots! (Danger danger danger...) How to do it? Pix2St
PHP image processing case: How to implement the verification code function of images
Aug 17, 2023 pm 12:09 PM
PHP image processing case: How to implement the verification code function of images. With the rapid development of the Internet, verification codes have become one of the important means to protect website security. Verification code is a verification method that uses image recognition technology to determine whether the user is a real user. This article will introduce how to use PHP to implement the verification code function of images, and come with code examples. Introduction A verification code is a picture containing random characters. The user needs to enter the characters in the picture to pass the verification. The main process of implementing verification code includes generating random characters and drawing characters into pictures.
Why can't I receive the verification code on my phone?
Aug 17, 2023 pm 02:49 PM
Failure to receive the verification code on your mobile phone is caused by network problems, mobile phone settings problems, mobile phone operator problems and personal settings problems. Detailed introduction: 1. Network problems. The network environment where the mobile phone is located is unstable or the signal is weak, which may cause the verification code to be unable to be delivered in time; 2. Mobile phone setting problems. The text message or voice function of the mobile phone is accidentally turned off, or the The verification code sending number is added to the blacklist, resulting in the verification code not being received normally; 3. Mobile phone operator issues, the mobile phone operator may have malfunctions or maintenance, resulting in the verification code not being delivered in time, etc.
How to create a verification code image using PHP?
Sep 13, 2023 am 11:40 AM
How to create a verification code image using PHP? CAPTCHA is a commonly used method to verify whether the user is a human and not a machine. On websites, we often see verification code images, which require users to enter random characters or numbers displayed on the image to complete operations such as login, registration, and commenting. This article will introduce how to use PHP to create a verification code image and provide specific code examples. 1. PHPGD library To create a verification code image, we need to use PHP's GD library. The GD library is an extension for processing images.
PHP Development Guide: Implementing Verification Code Login
Jul 01, 2023 am 09:27 AM
With the development of the Internet and the popularity of smartphones, the verification code login function is adopted by more and more websites and applications. Verification code login is a login method that verifies the user's identity by entering the correct verification code to improve security and prevent malicious attacks. In PHP development, implementing a simple verification code login function is not complicated and can be completed through the following steps. Create a database table First, we need to create a table in the database to store verification code information. The table structure can contain the following fields: id: auto-incrementing primary key phon
What happens when I receive verification codes from various platforms on my mobile phone?
Sep 21, 2023 pm 03:31 PM
Receiving verification codes from various platforms on your mobile phone may be because your personal information has been stolen, your mobile phone number has been misused, or your mobile phone number has been filled in incorrectly or misused. Detailed introduction: 1. Personal information has been stolen. Hackers or criminals may obtain your personal information through various channels, and then use this information to register accounts on various platforms; 2. Mobile phone numbers have been abused, and some criminals will use A large number of mobile phone numbers are obtained through various means, and then these mobile phone numbers are used to carry out various fraudulent activities; 3. Mobile phone numbers are filled in incorrectly or misused, etc.
