分享下页面关键字抓取components.arrow.com站点代码

/**
* HOST: components.arrow.com
*/
//set_time_limit(0);
// base function
function curl_get($url,$data = array(),$header = array(),$timeout = 15,$port = 80,$reffer = '',$proxy = '')
{
$ch = curl_init();
if (!empty($data)) {
$data = is_array($data)?http_build_query($data): $data;
$url .= (strpos($url,'?')? '&': "?") . $data;
}
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
curl_setopt($ch,CURLOPT_POST,0);
curl_setopt($ch,CURLOPT_PORT,$port);
curl_setopt($ch,CURLOPT_HTTPHEADER,$header);
curl_setopt($ch,CURLOPT_FOLLOWLOCATION,1); //是否抓取跳转后的页面
$reffer && curl_setopt($ch,CURLOPT_REFERER,$reffer);
if($proxy) {
curl_setopt($ch,CURLOPT_PROXY,$proxy);
curl_setopt($ch,CURLOPT_PROXYPORT,1723);
curl_setopt($ch,CURLOPT_PROXYUSERPWD,"andhm001:andhm123");
}$result = array();
$result['result'] = curl_exec($ch);
if (0 != curl_errno($ch)) {
$result['error'] = "Error:n" . curl_error($ch);}
curl_close($ch);
return $result;
}

function curl_post($url,$port = 80)
{
$ch = curl_init();
curl_setopt($ch,$port);
!empty ($header) && curl_setopt($ch,1);
curl_setopt($ch,CURLOPT_POSTFIELDS,$data);$result = array();
$result['result'] = curl_exec($ch);
if (0 != curl_errno($ch)) {
$result['error'] = "Error:n" . curl_error($ch);}
curl_close($ch);return $result;
}/**
* 获取列表页的html源码
* @param string $keywords 搜索关键字
* @param int $start 开始记录数
* @return boolean|array
*/
function getListHtml($keywords,$start = 0)
{
if ($start < 0)
{
return false;
}$postData = array(
'search_token' => $keywords,
'start' => $start,
'limit' => 100,
);$result = curl_post('http://components.arrow.com/part/search/' . $keywords,http_build_query($postData));
if ( isset($result['error']) )
{
return false;
//exit($result['error']);
}
$result = $result['result'];return $result;
}/**
* 获取列表页 连接href
* @param string $html html源码
* @return array
*/
function getListHref($html)
{
$pattern = '/if (preg_match_all($pattern,$html,$matches))
{
return $matches[1];
} else {
// 没有匹配项
return array();
}
}/**
* 获取下一页数字start
* @param string $html html源码
* @return number
*/
function getListNextPage($html)
{
$pattern = '//isU';
if (preg_match($pattern,$matches))
{
return intval($matches[1]);
} else {
return -1;
}
}/**
* 获取列表也所有的详细列表
* @param string $keywords 搜索关键字
* @return boolean|array
*/
function getListHrefAll($keywords)
{
if (empty($keywords))
{
return false;
}$html = getListHtml($keywords);
$hrefList = getListHref($html);
if (empty($hrefList))
{
// 没有结果
return array();
}
$nextPage = getListNextPage($html);
$loop =0;
while ($nextPage > 0)
{
$html = getListHtml($keywords,$nextPage);
$tmpHrefList = getListHref($html);
$hrefList = array_merge($hrefList,$tmpHrefList);
$nextPage = getListNextPage($html);
$loop ++;
}
return $hrefList;
}/**
* 获取详情页信息
* @param string $url url地址
* @return array()
*/
function getDetail($url)
{
if ( empty($url) )
{
return false;
}
$host = 'http://components.arrow.com';$url = $host . $url;
$result = curl_get($url);
if ( isset($result['error']) )
{
return array();
//exit($result['error']);
}
$html = $result['result'];$result = array(
'sup_part' => '',// 供应商型
'sup_id' => '',// 供应商ID
'mfg_part' => '',// 制造商型号
'mfg_name' => '',// 制造商名称
'cat_name' => '',// 分类名称
'para' => '',// 属性
'desc' => '',// 描述
'pdf_url' => '',// PDF地址
'sup_stock' => '',// 库存
'min_purch' => '',// 最小订购量
'price' => '',// 价格
'img_url' => '',// 图片地址
'createtime' => '',// 创建时间
'datacode' => '',// 批号
'package' => '',// 封装
'page_url' => '',// 页面地址
);// mfg_part
$pattern = '/

[sn]*

Part No:s*

(.+)

/isU';
if (preg_match($pattern,$matches))
{
$result['mfg_part'] = trim($matches[1]);
} else {file_put_contents('page.txt',$html);die('xxx');
return array();
}// mfg_name
$pattern = '/

[sn]*

Manufacturer:

(.+)

/isU';
if (preg_match($pattern,$matches))
{
$result['mfg_name'] = trim($matches[1]);
}// cat_name
$pattern = '/displayCategory('(.[^']+)');/isU';
if (preg_match($pattern,$matches))
{
$result['cat_name'] = trim($matches[1]);
$result['cat_name'] = str_replace('|','>',$result['cat_name']);
}// para
$tablepattern = '/]*>(.+)