PHP爬虫 随机爬取美图录的一张图片

<?php

require 'phpQuery.php';

// 主体域名
$basicUrl = 'https://www.meitulu.com/';

// 分类名称
$category = array('nvshen', 'jipin', 'nenmo', 'wangluohongren', 'fengsuniang', 'qizhi', 'youwu',
	'baoru', 'xinggan', 'youhuo', 'meixiong', 'shaofu', 'changtui', 'mengmeizi',
	'loli', 'keai', 'huwai', 'bijini', 'qingchun', 'weimei', 'qingxin');

// 爬虫代码
function curl($url, $referer, $download)
{
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_TIMEOUT, 2);
	curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 500);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_HTTPHEADER, array('User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 8_0 like Mac OS X) AppleWebKit/600.1.3 (KHTML, like Gecko) Version/8.0 Mobile/12A4345d Safari/600.1.4'));
	curl_setopt($ch, CURLOPT_REFERER, $referer);
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
	curl_setopt($ch, CURLOPT_REDIR_PROTOCOLS, -1);
	$contents = curl_exec($ch);
	curl_close($ch);
	if ($download) {
		$resource = fopen('default.jpg', 'w');
		fwrite($resource, $contents);
		fclose($resource);
		return;
	}
	return $contents;
}

$count = 10;

// 随机分类
while ($count > 0) {
	$afterUrl = $basicUrl . 't/' . $category[rand(0, count($category) - 1)] . '/' . rand(2, 5) . '.html';
	$html = curl($afterUrl, $afterUrl, false);
	if (strlen($html) != 0) {
		break;
	}
	$count--;
}

if($count == 0){
	echo '爬取失败!';
	exit;
}

$count = 10;

$afterUrlTmp = $afterUrl;
$eg = phpQuery::newDocument($html);
$links = pq('ul.img > li > a');

// 随机套图
$afterUrl = '';
for ($i = 0; $i < count($links); $i++) {
	$afterUrl = $links->eq($i)->attr('href');
	if (strpos($afterUrl, 'item' !== false)) {
		if (strpos($afterUrl, 'https' == false)) {
			$afterUrl = 'https://www.meitulu.com' + $afterUrl;
		}
		$html = curl($afterUrl, $afterUrlTmp, false);
		if (strlen($html) != 0) {
			break;
		}
	}
}

$html = curl($afterUrl, $afterUrlTmp, false);
$eg = phpQuery::newDocument($html);
$img = pq('img.content_img');

$afterUrlTmp = $afterUrl;

// 随机图片
while ($count > 0) {
	$afterUrl = $img->eq(rand(0, count($img) - 1))->attr('src');
	if (strlen($afterUrl) != 0) {
		break;
	}
	$count--;
}

if($count == 0){
	echo '爬取失败!';
	exit;
}

curl($afterUrl, $afterUrlTmp, true);
echo '<img src="default.jpg">';

?>

演示地址：https://www.liulangboy.com/tools/02/get-meitulu-pic.php