How can you call an API interface through PHP using GET method?

To call an API interface using the GET method, you can use the curl function library in PHP. Here is an example code:

<?php
// API接口的URL
$url = 'http://api.example.com/api';

// 构建GET请求的参数
$params = array(
    'param1' => 'value1',
    'param2' => 'value2'
);

// 将GET请求的参数拼接到URL上
$url .= '?' . http_build_query($params);

// 初始化curl
$curl = curl_init();

// 设置curl选项
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);

// 发送GET请求并获取响应
$response = curl_exec($curl);

// 关闭curl
curl_close($curl);

// 处理响应结果
if ($response === false) {
    // 请求失败的处理逻辑
    echo '请求失败：' . curl_error($curl);
} else {
    // 请求成功的处理逻辑
    echo '请求成功：' . $response;
}
?>

In the example above, the API interface URL is first constructed and the GET request parameters are concatenated to the URL. Then curl_init() is used to initialize curl, set curl options including the URL of the request and how the response is handled, and finally curl_exec() is used to send the GET request and retrieve the response. Lastly, curl is closed and the response is processed.