前提条件
- PHP 8.0+ (需启用 cURL 扩展)
- 一个 Firecrawl API 密钥——免费获取
进行网页搜索
<?php
$apiKey = getenv('FIRECRAWL_API_KEY');
$ch = curl_init('https://api.firecrawl.dev/v2/search');
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_HTTPHEADER => [
'Authorization: Bearer ' . $apiKey,
'Content-Type: application/json',
],
CURLOPT_POSTFIELDS => json_encode([
'query' => 'firecrawl web scraping',
'limit' => 5,
]),
]);
$response = curl_exec($ch);
curl_close($ch);
$results = json_decode($response, true);
foreach ($results['data']['web'] as $result) {
echo $result['title'] . ' - ' . $result['url'] . "\n";
}
示例响应
示例响应
{
"success": true,
"data": {
"web": [
{
"url": "https://docs.firecrawl.dev",
"title": "Firecrawl Documentation",
"markdown": "# Firecrawl\n\nFirecrawl is a web scraping API..."
}
]
}
}
抓取网页
<?php
$ch = curl_init('https://api.firecrawl.dev/v2/scrape');
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_HTTPHEADER => [
'Authorization: Bearer ' . $apiKey,
'Content-Type: application/json',
],
CURLOPT_POSTFIELDS => json_encode([
'url' => 'https://example.com',
]),
]);
$response = curl_exec($ch);
curl_close($ch);
$data = json_decode($response, true);
echo $data['data']['markdown'];
示例响应
示例响应
{
"success": true,
"data": {
"markdown": "# Example Domain\n\nThis domain is for use in illustrative examples...",
"metadata": {
"title": "Example Domain",
"sourceURL": "https://example.com"
}
}
}
与页面交互
第 1 步 — 先抓取页面以启动会话
<?php
$ch = curl_init('https://api.firecrawl.dev/v2/scrape');
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_HTTPHEADER => [
'Authorization: Bearer ' . $apiKey,
'Content-Type: application/json',
],
CURLOPT_POSTFIELDS => json_encode([
'url' => 'https://www.amazon.com',
'formats' => ['markdown'],
]),
]);
$response = curl_exec($ch);
curl_close($ch);
$scrapeResult = json_decode($response, true);
$scrapeId = $scrapeResult['data']['metadata']['scrapeId'];
echo "scrapeId: $scrapeId\n";
第 2 步 — 发送交互指令
<?php
$interactUrl = "https://api.firecrawl.dev/v2/scrape/$scrapeId/interact";
$headers = [
'Authorization: Bearer ' . $apiKey,
'Content-Type: application/json',
];
// 搜索产品
$ch = curl_init($interactUrl);
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_HTTPHEADER => $headers,
CURLOPT_POSTFIELDS => json_encode([
'prompt' => 'Search for iPhone 16 Pro Max',
]),
]);
$response = curl_exec($ch);
curl_close($ch);
echo $response . "\n";
// 点击第一个结果
$ch = curl_init($interactUrl);
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_HTTPHEADER => $headers,
CURLOPT_POSTFIELDS => json_encode([
'prompt' => 'Click on the first result and tell me the price',
]),
]);
$response = curl_exec($ch);
curl_close($ch);
echo $response . "\n";
步骤 3 — 结束会话
<?php
$ch = curl_init($interactUrl);
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_CUSTOMREQUEST => 'DELETE',
CURLOPT_HTTPHEADER => [
'Authorization: Bearer ' . $apiKey,
],
]);
curl_exec($ch);
curl_close($ch);
echo "Session stopped\n";
可复用的辅助类
<?php
class Firecrawl
{
private string $apiKey;
private string $baseUrl = 'https://api.firecrawl.dev/v2';
public function __construct(string $apiKey)
{
$this->apiKey = $apiKey;
}
private function post(string $endpoint, array $payload): array
{
$ch = curl_init($this->baseUrl . $endpoint);
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_HTTPHEADER => [
'Authorization: Bearer ' . $this->apiKey,
'Content-Type: application/json',
],
CURLOPT_POSTFIELDS => json_encode($payload),
]);
$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($httpCode >= 400) {
throw new \RuntimeException("Firecrawl API error: HTTP $httpCode");
}
return json_decode($response, true);
}
public function scrape(string $url, array $options = []): array
{
return $this->post('/scrape', array_merge(['url' => $url], $options));
}
public function search(string $query, int $limit = 5): array
{
return $this->post('/search', ['query' => $query, 'limit' => $limit]);
}
}
// 使用方式
$app = new Firecrawl(getenv('FIRECRAWL_API_KEY'));
$result = $app->scrape('https://example.com');
echo $result['data']['markdown'];
下一步
搜索文档
进行网页搜索并获取完整页面内容
抓取文档
包括 formats、actions 和代理在内的所有抓取选项
交互文档
点击、填写表单并提取动态内容
API 参考
完整的 REST API 文档