Detailed explanation of PHP sending SMS technology

1. Introduction
With the popularization of mobile Internet, SMS marketing has attracted more and more attention and attention from enterprises. As a publicity method with extremely high effectiveness, extremely low cost and extremely fast delivery speed, SMS marketing is gradually becoming one of the important means for enterprises to promote new products and grasp new changes in the market. As a powerful back-end language, PHP can also implement the function of sending text messages. This article will introduce the detailed implementation of PHP's SMS sending technology.

2. Preparations for sending SMS
1. Obtain the account, password, and URL of the SMS gateway API
According to different SMS service providers, the API address, calling method, and request parameters may be omitted. There are different. You can log in to the website of the corresponding SMS service provider, apply to activate the SMS API, and obtain the corresponding account number, password, URL address and other information.

2. Download and install the SMS sending class library
Commonly used class libraries for PHP SMS sending include Snoopy, Curl, phpmailer, etc. Developers can choose the class library that suits them according to their needs. Next, we will introduce the detailed steps of sending text messages with Curl.

3. Steps for sending text messages with PHP
1. Prepare request parameters

Using PHP's Curl to send text messages requires setting the request header, request method, and request parameters as needed. The request parameters usually include account number, password, mobile phone number, SMS template, SMS content and other information.

2. Initialize the Curl object

Initialize the Curl object through the $ch = curl_init() function, which will return the handle of the current Curl session $ch.

3. Set Curl session parameters

Use the curl_setopt() function to set various parameters for the Curl session to meet actual requirements. If you need to send a POST request, set CURLOPT_POST to true and use CURLOPT_POSTFIELDS to pass request parameters, etc.

4. Perform Curl operation

Use the curl_exec() function to actually perform the Curl operation. This function takes the Curl handle and other related parameters as parameters and returns a string containing the request return result.

5. Close the Curl session

After the Curl operation is completed, use the curl_close() function to close the session.

4. PHP SMS Code Implementation Example
In view of the above detailed steps, we can write the following PHP SMS Code Implementation Example, taking Curl to send SMS as an example:

<?php
// 短信API地址
$url = 'http://sms.abc.com/api/sms/send';

// 短信API账号密码
$username = 'abc';
$password = 'def';

// 短信发送内容
$mobile = '13888888888';
$template = '【XXX公司】您的验证码是：123456，请尽快验证！';
$content = array('username' => $username, 'password' => $password, 'mobile' => $mobile, 'template' => $template);

// 初始化Curl对象
$ch = curl_init();

// 设置Curl会话参数
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $content);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

// 执行Curl操作
$response = curl_exec($ch);

// 关闭Curl会话
curl_close($ch);

// 输出短信发送结果
echo $response;
?>

5 , Summary
Sending text messages through PHP code can elevate the efficiency and convenience of text message marketing to a new level, allowing companies to better communicate with customers, promote products and services more accurately, and gain more business Chance. In addition, the PHP code implementation method for sending SMS can also be applied to other scenarios that require timely communication such as billing, notifications, and verification codes to meet different development needs.

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