方法1: 用file_get_contents以get方式獲取內容
<?php
$url='http://www.domain.com/?para=123';
$html= file_get_contents($url);
echo$html;
?>
方法2:用file_get_contents函數,以post方式獲取url
<?php
$url= 'http://www.domain.com/test.php?id=123';
$data= array('foo'=> 'bar');
$data= http_build_query($data);
$opts= array(
'http'=> array(
'method'=> 'POST',
'header'=>"Content-type: application/x-www-form-urlencoded\r\n" .
"Content-Length: " . strlen($data) . "\r\n",
'content'=> $data
)
);
$ctx= stream_context_create($opts);
$html= @file_get_contents($url,'',$ctx);
如果需要再傳遞cookie數據,則把
'header'=>"Content-type: application/x-www-form-urlencoded\r\n" .
"Content-Length: " . strlen($data) . "\r\n",
修改為
'header'=>"Content-type: application/x-www-form-urlencoded\r\n" .
"Content-Length: " . strlen($data) . "\r\n".
"cookie:cookie1=c1;cookie2=c2\r\n";
即可
方法3: 用fopen打開url, 以get方式獲取內容
<?php
$fp= fopen($url,'r');
$header= stream_get_meta_data($fp);//獲取報頭信息
while(!feof($fp)) {
$result.= fgets($fp, 1024);
}
echo"url header: {$header} <br>":
echo"url body: $result";
fclose($fp);
?>
方法4: 用fopen打開url, 以post方式獲取內容
<?php
$data= array('foo2'=> 'bar2','foo3'=>'bar3');
$data= http_build_query($data);
$opts= array(
'http'=> array(
'method'=> 'POST',
'header'=>"Content-type: application/x-www-form-urlencoded\r\nCookie:cook1=c3;cook2=c4\r\n" .
"Content-Length: " . strlen($data) . "\r\n",
'content'=> $data
)
);
$context= stream_context_create($opts);
$html= fopen('http://www.test.com/zzzz.php?id=i3&id2=i4','rb',false, $context);
$w=fread($html,1024);
echo$w;
?>
方法5:用fsockopen函數打開url,以get方式獲取完整的數據,包括header和body
<?php
functionget_url ($url,$cookie=false)
{
$url= parse_url($url);
$query= $url[path]."?".$url[query];
echo"Query:".$query;
$fp= fsockopen($url[host],$url[port]?$url[port]:80 , $errno,$errstr, 30);
if(!$fp) {
returnfalse;
}else{
$request= "GET $query HTTP/1.1\r\n";
$request.= "Host: $url[host]\r\n";
$request.= "Connection: Close\r\n";
if($cookie)$request.="Cookie: $cookie\n";
$request.="\r\n";
fwrite($fp,$request);
while(!@feof($fp)) {
$result.= @fgets($fp, 1024);
}
fclose($fp);
return$result;
}
}
//獲取url的html部分,去掉header
functionGetUrlHTML($url,$cookie=false)
{
$rowdata= get_url($url,$cookie);
if($rowdata)
{
$body=stristr($rowdata,"\r\n\r\n");
$body=substr($body,4,strlen($body));
return$body;
}
returnfalse;
}
?>
方法6:用fsockopen函數打開url,以POST方式獲取完整的數據,包括header和body
<?php
functionHTTP_Post($URL,$data,$cookie,$referrer="")
{
// parsing the given URL
$URL_Info=parse_url($URL);
// Building referrer
if($referrer=="")// if not given use this script as referrer
$referrer="111";
// making string from $data
foreach($dataas
$key=>$value)
$values[]="$key=".urlencode($value);
$data_string=implode("&",$values);
// Find out which port is needed - if not given use standard (=80)
if(!isset($URL_Info["port"]))
$URL_Info["port"]=80;
// building POST-request:
$request.="POST ".$URL_Info["path"]." HTTP/1.1\n";
$request.="Host: ".$URL_Info["host"]."\n";
$request.="Referer: $referer\n";
$request.="Content-type: application/x-www-form-urlencoded\n";
$request.="Content-length: ".strlen($data_string)."\n";
$request.="Connection: close\n";
$request.="Cookie: $cookie\n";
$request.="\n";
$request.=$data_string."\n";
$fp= fsockopen($URL_Info["host"],$URL_Info["port"]);
fputs($fp,$request);
while(!feof($fp)) {
$result.= fgets($fp, 1024);
}
fclose($fp);
return$result;
}
?>
方法7:使用curl庫,使用curl庫之前,可能需要查看一下php.ini是否已經打開了curl擴展
<?php
$ch= curl_init();
$timeout= 5;
curl_setopt ($ch, CURLOPT_URL, 'http://www.domain.com/');
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents= curl_exec($ch);
curl_close($ch);
echo$file_contents;
?>
這里收集了3種利用php獲得網頁源代碼抓取網頁內容的方法,我們可以根據實際需要選用。
1、使用file_get_contents獲得網頁源代碼
這個方法最常用,只需要兩行代碼即可,非常簡單方便。
參考代碼:
- <?php
- $fh= file_get_contents('http://www.webkaka.com/');
- echo $fh;
- ?>
2、使用fopen獲得網頁源代碼
這個方法用的人也不少,不過代碼有點多。
參考代碼:
- <?php
- $fh = fopen('http://www.webkaka.com/', 'r');
- if($fh){
- while(!feof($fh)) {
- echo fgets($fh);
- }
- }
- ?>
3、使用curl獲得網頁源代碼
使用curl獲得網頁源代碼的做法,往往是需要更高要求的人使用,例如當你需要在抓取網頁內容的同時,得到網頁header信息,還有ENCODING編碼的使用,USERAGENT的使用等等。
參考代碼一:
- <?php
- // 創建一個新cURL資源
- $ch = curl_init();
- // 設置URL和相應的選項
- curl_setopt($ch, CURLOPT_URL, "http://www.webkaka.com/");
- curl_setopt($ch, CURLOPT_HEADER, false);
- // 抓取URL並把它傳遞給瀏覽器
- $data = curl_exec($ch);
- echo $data;
- //關閉cURL資源,並且釋放系統資源
- curl_close($ch);
- ?>
參考代碼二:
- <?php
- $szUrl = "http://www.webkaka.com/";
- $UserAgent = 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.0.04506; .NET CLR 3.5.21022; .NET CLR 1.0.3705; .NET CLR 1.1.4322)';
- $curl = curl_init();
- curl_setopt($curl, CURLOPT_URL, $szUrl);
- curl_setopt($curl, CURLOPT_HEADER, 0); //0表示不輸出Header,1表示輸出
- curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
- curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
- curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
- curl_setopt($curl, CURLOPT_ENCODING, '');
- curl_setopt($curl, CURLOPT_USERAGENT, $UserAgent);
- curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
- $data = curl_exec($curl);
- echo $data;
- //echo curl_errno($curl); //返回0時表示程序執行成功 如何從curl_errno返回值獲取錯誤信息
