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php網(wǎng)頁(yè)爬蟲(chóng)

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/*網(wǎng)頁(yè)爬蟲(chóng)*/

#最簡(jiǎn)單的使用,屬性都采用默認(rèn)值

/*

$curl=curl_init('http://www.baidu.com');

$output=curl_exec($curl);

curl_close($curl);

echo $output;

*/

#稍微復(fù)雜一點(diǎn)的,對(duì)頁(yè)面進(jìn)行操作

/*

$curl=curl_init();

curl_setopt($curl, CURLOPT_URL, 'http://www.baidu.com');//可以動(dòng)態(tài)改變網(wǎng)址

curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);//不直接打印在瀏覽器上

$output=curl_exec($curl);//執(zhí)行

curl_close($curl);//關(guān)閉

echo str_replace('百度', '虎哥', $output);

*/

#更復(fù)雜一點(diǎn)的,模擬POST請(qǐng)求

/*

$data='theCityName=北京';

$curl=curl_init();

curl_setopt($curl, CURLOPT_URL,'http://www.webxml.com.cn/WebServices/WeatherWebService.asmx/getWeatherbyCityName');

curl_setopt($curl,CURLOPT_HEADER, 0);

curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($curl,CURLOPT_POST, 1);

curl_setopt($curl,CURLOPT_POSTFIELDS,$data);

curl_setopt($curl,CURLOPT_HTTPHEADER,array('application/x-www-form-rulencode;charset=utf-8','Content-length'.strlen($data)));

$output=curl_exec($curl);

if(!curl_errno($curl)){

//$info=curl_getinfo($curl);

//print_r($info);

header('Content-type:text/html;charset=utf-8;');

echo $output;

}else{

echo 'Curl Error:'.curl_error($curl);

}

curl_close($curl);

*/

#抓取需要登錄的頁(yè)面

/*

$data='username=2232839753@qq.com&password=19900417&remember=1';

$curl=curl_init();

curl_setopt($curl,CURLOPT_URL,'http://www.imooc.com/user/login');

curl_setopt($curl,CURLOPT_RETURNTRANSFER, true);//執(zhí)行之后不直接打印出來(lái)

//Cookie相關(guān)設(shè)置,這部分設(shè)置需要在所有回話開(kāi)始之前設(shè)置

date_default_timezone_set('PRC');//使用cookie時(shí)必須設(shè)置時(shí)區(qū)

curl_setopt($curl,CURLOPT_COOKIESESSION, true);

curl_setopt($curl,CURLOPT_COOKIEFILE,'cookiefile');

curl_setopt($curl,CURLOPT_COOKIEJAR,'cookiefile');

curl_setopt($curl,CURLOPT_COOKIE, session_name().'='.session_id());

curl_setopt($curl,CURLOPT_HEADER,0);//禁止輸出頭信息

curl_setopt($curl,CURLOPT_FOLLOWLOCATION, 1);

curl_setopt($curl,CURLOPT_POST, 1);

curl_setopt($curl,CURLOPT_POSTFIELDS, $data);

curl_setopt($curl,CURLOPT_HTTPHEADER,array('application/x-www-form-rulencode;charset=utf-8','Content-length:'.strlen($data)));

curl_exec($curl);//執(zhí)行

curl_setopt($curl,CURLOPT_URL,'http://www.imooc.com/space/index');

curl_setopt($curl,CURLOPT_POST,0);//下載頁(yè)面不是post請(qǐng)求,故置0

curl_setopt($curl,CURLOPT_HTTPHEADER,array('Content-type:text/xml'));

$output=curl_exec($curl);

echo $output;

*/

#從ftp

curl_setopt($curl,CURLOPT_HEADER,0);//禁止輸出頭信息,調(diào)試時(shí),可以輸出

curl_setopt($curl,CURLOPT_RETURNTRANSFER, 1);

curl_setopt($curl,CURLOPT_TIMEOUT,300);//設(shè)置超時(shí)時(shí)間,單位秒

curl_setopt($curl,CURLOPT_USERPWD,"admin:123");//ftp用戶名,密碼

$outfile=fopen('mytest.txt', 'wb');//保存到本地的文件名

curl_setopt($curl,CURLOPT_FILE,$outfile);

$output=curl_exec($curl);

fclose($outfile);

if(!curl_errno($curl)){

//$info=curl_getinfo($curl);

//print_r($info);

echo "RETURN:".$output;

}else{

echo 'Curl error:'.curl_error($curl);

}

curl_close($curl);

*/

#ftp文件上傳

/*

$curl=curl_init();

$uploadfile='demo1.php';

$fp=fopen($uploadfile,'r');

curl_setopt($curl, CURLOPT_URL, 'ftp://10.14.12.22:21/uploadfile.php');

curl_setopt($curl, CURLOPT_HEADER,0);

curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);

curl_setopt($curl, CURLOPT_TIMEOUT,300);

curl_setopt($curl,CURLOPT_USERPWD,'admin:123');

curl_setopt($curl,CURLOPT_UPLOAD,1);

curl_setopt($curl, CURLOPT_INFILE, $fp);

curl_setopt($curl,CURLOPT_INFILESIZE,filesize($uploadfile));

$output=curl_exec($curl);

fclose($fp);

if(!curl_errno($curl)){

echo 'uploadfile successfully';

}else{

echo 'uploadfile error:'.curl_error($curl);

}

curl_close($curl);

*/

#curl訪問(wèn)https上的資源

/*

$curl=curl_init();

curl_setopt($curl,CURLOPT_URL,'https://ajax.aspnetcdn.com/ajax/jquery.validate/1.12.0/jquery.validate.js');

curl_setopt($curl,CURLOPT_RETURNTRANSFER,true);

date_default_timezone_set('PRC');

curl_setopt($curl,CURLOPT_SSL_VERIFYPEER,0);//終止從服務(wù)端進(jìn)行驗(yàn)證

$output=curl_exec($curl);

curl_close($curl);

echo $output;

*/

//php官方文檔網(wǎng)址:http://php.net/manual/zh/book.curl.php

?>


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