PHP:如何检查URL是Youtube还是vimeo

function check_url($url) {
    if (preg_match('/^https:\/\/www\.youtube\.com\/watch\?v=[a-zA-Z0-9]{11}$/', $url)) {
        return 'YouTube';
    } elseif (preg_match('/^https:\/\/vimeo\.com\/\d+$/', $url)) {
        return 'Vimeo';
    } else {
        return 'Neither YouTube nor Vimeo';
    }
}

$url1 = 'https://www.youtube.com/watch?v=dQw4w9WgXcQ';
$url2 = 'https://vimeo.com/123456789';
$url3 = 'https://example.com';

echo check_url($url1) . "\n"; // 输出 "YouTube"
echo check_url($url2) . "\n"; // 输出 "Vimeo"
echo check_url($url3) . "\n"; // 输出 "Neither YouTube nor Vimeo"

<?php

function check_url($url) {
    if (preg_match('/^https:\/\/www\.youtube\.com\/watch\?v=[a-zA-Z0-9]{11}$/', $url)) {
        return 'YouTube';
    } elseif (preg_match('/^https:\/\/vimeo\.com\/\d+$/', $url)) {
        return 'Vimeo';
    } else {
        return 'Neither YouTube nor Vimeo';
    }
}

function main_handler($event, $context) {
    $url = $event['queryString']['url'];
    $result = check_url($url);
    return [
        'isBase64Encoded' => false,
        'statusCode' => 200,
        'headers' => ['Content-Type' => 'application/json'],
        'body' => json_encode(['result' => $result])
    ];
}