PHP代码怎么调用API_ PHP API接口请求与响应处理指南

curl

<?php

function call_api($url, $method = 'GET', $data = null, $headers = []) {
    $curl = curl_init();

    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); // 返回结果，不直接输出

    if ($method == 'POST') {
        curl_setopt($curl, CURLOPT_POST, true);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
    } elseif ($method != 'GET') {
        curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $method);
        if ($data) {
            curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        }
    }

    if (!empty($headers)) {
        curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
    }

    $response = curl_exec($curl);

    if (curl_errno($curl)) {
        $error_message = curl_error($curl);
        curl_close($curl);
        throw new Exception("cURL error: " . $error_message);
    }

    $http_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
    curl_close($curl);

    if ($http_code >= 400) {
        throw new Exception("HTTP error: " . $http_code . " - " . $response);
    }

    return $response;
}


// 示例：GET 请求
try {
    $response = call_api('https://api.example.com/users/123');
    $data = json_decode($response, true); // 解析JSON
    print_r($data);

} catch (Exception $e) {
    echo "Error: " . $e->getMessage();
}


// 示例：POST 请求
$post_data = json_encode(['name' => 'John Doe', 'email' => 'john.doe@example.com']);
$headers = ['Content-Type: application/json'];

try {
    $response = call_api('https://api.example.com/users', 'POST', $post_data, $headers);
    $data = json_decode($response, true);
    print_r($data);

} catch (Exception $e) {
    echo "Error: " . $e->getMessage();
}

?>

json_decode

simplexml_load_string

curl

CURLOPT_USERPWD