生成短信验证码 php

<?php
// 生成随机验证码
function generateCode($length = 6) {
    $characters = '0123456789';
    $charactersLength = strlen($characters);
    $randomString = '';
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, $charactersLength - 1)];
    }
    return $randomString;
}

// 发送短信验证码（示例代码，实际应用中需要调用短信服务提供商的API）
function sendSms($phone, $code) {
    // 这里需要调用短信服务提供商的API，以下为示例代码
    $url = 'https://api.smsprovider.com/send';
    $data = [
        'phone' => $phone,
        'code' => $code
    ];
    $options = [
        'http' => [
            'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
            'method'  => 'POST',
            'content' => http_build_query($data),
        ],
    ];
    $context  = stream_context_create($options);
    $result = file_get_contents($url, false, $context);
    if ($result === FALSE) { /* Handle error */ }

    return $result;
}

// 示例调用
$phone = '13800138000';
$code = generateCode();
$result = sendSms($phone, $code);

if ($result === 'success') {
    echo "验证码已发送到 $phone";
} else {
    echo "发送失败，请重试";
}
?>