如何编写页面关键字抓取www.icbase.com站点代码

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复制代码 代码如下:

/**
* HOST: www.icbase.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;
}

复制代码 代码如下:

function curl_post($url, $data = array(), $header = array(), $timeout = 5, $port = 80)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
//curl_setopt($ch, CURLOPT_PORT, $port);
!empty ($header) && curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
curl_setopt($ch, CURLOPT_POST, 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 $page 页数
* @return boolean|array
*/
function getListHtml($keywords, $page=1)
{
if ($page < 0)
{
return false;
}
$page = $page == 0 ? 1 : intval($page);
if ($page == 1)
{
$result = curl_get('http://www.icbase.com/ProResult.aspx', array('ProKey' => $keywords));
if ( isset($result['error']) )
{
return false;
//exit($result['error']);
}
$result = $result['result'];

// asp.net post提交数据
if(! defined('__VIEWSTATE') && preg_match('/{
define('__VIEWSTATE', $matches[1]);
} else {
return false;
}

if(! defined('__PREVIOUSPAGE') && preg_match('/{
define('__PREVIOUSPAGE', $matches[1]);
} else {
return false;
}

if(! defined('__EVENTVALIDATION') && preg_match('/{
define('__EVENTVALIDATION', $matches[1]);
} else {
return false;
}

return $result;
}
$data = array(
'__EVENTTARGET' => 'pager',
'__EVENTARGUMENT' => $page,
'__VIEWSTATE' => __VIEWSTATE,
'__PREVIOUSPAGE' => __PREVIOUSPAGE,
'__EVENTVALIDATION' => __EVENTVALIDATION,
);
$result = curl_post('http://www.icbase.com/ProResult.aspx?ProKey=' . $keywords, $data);
if ( isset($result['error']) )
{
return false;
//exit($result['error']);
}
$result = $result['result'];
return $result;
}

/**
* 获取列表页 a链接的url
* @param string $html html源码
* @return array
*/
function getListHref($html)
{
$pattern = '/[\s\n]*]\/>/isU';
if (preg_match_all($pattern, $html, $matches))
{
return $matches[1];
} else {
// 没有匹配项
return array();
}
}

/**
* 获取下一页数字
* @param string $html html源码
* @return number
*/
function getListNextPage($html)
{
$pattern = '/]>.+><\/a>/isU';
if (preg_match($pattern, $html, $matches))
{
return intval($matches[1]);
} else {
return -1;
}
}

/**
* 获取列表也所有的href
* @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);
while ($nextPage > 0)
{
$html = getListHtml($keywords, $nextPage);
$tmpHrefList = getListHref($html);
$hrefList = array_merge($hrefList, $tmpHrefList);
$nextPage = getListNextPage($html);
}
return $hrefList;
}

/**
* 获取详情页信息
* @param string $url url地址或者是抓取到的html源代码 根据@see $is_url 区分
* @param int $is_url 1使用的是url地址 0直接处理html源代码
* @return boolean|multitype:|multitype:string
*/
function getDetail($url, $is_url = 1)
{
if ( empty($url) )
{
return false;
}
$host = 'www.icbase.com';
$html = $url;
if ($is_url) {
$url = '/' . ltrim($url, '/');
$result = curl_get($host . $url);
if ( isset($result['error']) )
{
exit($result['error']);
}
$html = $result['result'];
}

$result = array(
'sup_part' => '', // 供应商型号
'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
$pattern = '/产品型号<\/td>(.[^<]+)if (preg_match($pattern, $html, $matches))
{
$result['mfg_part'] = trim($matches[1]);
} else {
// 此项木有，说明也没处处了
return array();
}

// mfg_name
$pattern = '/厂商<\/td>[\s\n]*(.+)<\/td>/isU';
if (preg_match($pattern, $html, $matches))
{
$result['mfg_name'] = trim($matches[1]);
}

// para
$pattern = '/(.+)<\/tr><\/table>/isU';
if (preg_match($pattern, $html, $matches))
{
if (preg_match_all('/(.+)<\/td>/isU', $matches[1], $matches))
{
$count = count($matches[1]);
$count = intval($count / 2 );
foreach ($matches[1] as $k=>$v)
{
if ($k >= $count)
{
break;
}
if (trim($v) == '描述')
{
// desc
$result['desc'] = trim($matches[1][$count + $k]);
continue;
}
$v = trim($v);
$result['para'][$v] = trim($matches[1][$count + $k]);
}
}
}

// pdf_url
$pattern = '/详细资料<\/td>if (preg_match($pattern, $html, $matches))
{
$result['pdf_url'] = trim($matches[1]);
}

// sup_stock
$pattern = '/库存数量<\/td>[\s\n]*(\d+)<\/td>/isU';
if (preg_match($pattern, $html, $matches))
{
$result['sup_stock'] = trim($matches[1]);
}

// price
$pattern = '/]+>(\d+)\+<\/td>]+>.[^\d]*([\d.]+)<\/td><\/tr>/isU';
if (preg_match_all($pattern, $html, $matches))
{
foreach ($matches[1] as $k=>$v)
{
$result['price'][$v] = '￥' . $matches[2][$k];
}
}

//img_url
$pattern = '/图片<\/td>if (preg_match($pattern, $html, $matches))
{
$result['img_url'] = trim($matches[1]);
}

// page_url
if ($is_url)
{
$result['page_url'] = $host . $url;
}

return $result;
}

/**
* 最终调用函数
* @param string $keywords 搜索关键字
* @return array
*/
function getData($keywords)
{
$hrefList = getListHrefAll($keywords);
$result = array();

foreach ($hrefList as $k=>$v)
{
$result[] = getDetail($v);
}

return $result;
}

// Test Script
$keywords = trim($_GET['keywords']);
$result = getData($keywords);

print_r($result);

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