PHP's curl implements get, post and cookie (example introduction)_PHP tutorial

Host service providers such as dreamhost show the use of fopen. Using PHP's curl can support FTP, FTPS, HTTP HTPPS SCP SFTP TFTP TELNET DICT FILE and LDAP. curl supports SSL certificate, HTTP POST, HTTP PUT, FTP upload, Kerberos, HTTP-based upload, proxy, cookie, user + password certificate, file transfer recovery, http proxy channel. The most commonly used one is http-based get and post method.
Code implementation:
1. HTTP get implementation

Copy code The code is as follows:

$ch = curl_init("http://www.domain.com/api/index.php?test=1") ;
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true) ; // Get data and return
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true) ; // Get data and return when CURLOPT_RETURNTRANSFER is enabled
echo $output = curl_exec($ch) ;

/* Write Input file*/
$fh = fopen("out.html", 'w') ;
fwrite($fh, $output) ;
fclose($fh) ;

2. HTTP post implementation

Copy code The code is as follows:

$url = 'http://www.domain.com/api/' ;
$fields = array(
'lname'=>'justcoding' ,
          'fname'=>'phplover',                                                'email'=>'1353777303@ gmail.com' ,
'phone'=>'1353777303'
);
//$post_data = implode('&',$fields);


Note: The parameters of the post request must be connected using the get method and passed as a string:

For example: $params = 'userId ='.$this->user_id.'&auth='.$this->auth.'&sig='.$this->sig
There are also cross-platform requests, curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); // Use automatic jump (very important) //open connection

$ch = curl_init();

//set the url, number of POST vars, POST data
curl_setopt($ch, CURLOPT_URL,$url) ;
curl_setopt($ch, CURLOPT_POST,count($fields)) ; // enable A regular POST request of type: application/x-www-form-urlencoded will be sent, just like the form submission.
curl_setopt($ch, CURLOPT_POSTFIELDS,$fields); // "POST" operation in HTTP. If you want to transfer a file, you need a file name starting with @

ob_start();
curl_exec($ch);
$result = ob_get_contents();
ob_end_clean();

echo $result;

//close connection
curl_close($ch) ;

Copy code

The code is as follows:

if($_GET['test'])

{
print_r($_GET);
}

if($_POST)
{
print_r($_POST);
}




php curl transmission cookie

Two ways:
One is automatic:

Copy Code

The code is as follows: curl_setopt($curlHandle, CURLOPT_COOKIEJAR, 'cookie.txt '); //Save curl_setopt($curlHandle, CURLOPT_COOKIEFILE, 'cookie.txt '); //Read

so that COOKIE will automatically follow.
But it needs to be divided into two times. First, the cookie is generated by the first visit, and then the cookie can be used by the link

Example:



Copy code

The code is as follows:

function get_curlcuconent2($filename,$referer)
{
$cookie_jar = tempnam('./tmp','JSESSIONID');

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $filename);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1) ;

//Set the cookie path for file reading and submission
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);
$filecontent=curl_exec($ch);
curl_close($ ch);

$ch = curl_init();
$hostname ="www.domain.com";
//$referer="http://www.domain.com/" ;
curl_setopt($ch, CURLOPT_URL, $filename);
curl_setopt($ch, CURLOPT_REFERER, $referer); // Look here, you can also say you are from google
curl_setopt($ch, CURLOPT_USERAGENT, "www.domain.com");

//$request = "JSESSIONID=abc6szw15ozvZ_PU9b-8r"; //Set POST parameters
//curl_setopt($ch, CURLOPT_POSTFIELDS, $request) ;
// In the above sentence, of course you can say you are baidu, just change the value here and it will be ok. You can achieve the function of a thief, $_SERVER['HTTP_USER_AGENT']
//You can also do it yourself A spider, so just fake CURLOPT_USERAGENT here
//If you want to put this program on linux and execute it with php -q, you must also write the specific $_SERVER['HTTP_USER_AGENT'], you can also fake it
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);
curl_setopt($ch, CURLOPT_HEADER, false);//Set whether to output page content
curl_setopt($ch, CURLOPT_GET, 1); // post,get past

$filecontent = curl_exec($ch);
preg_match_all("/charset=(.+?)[NULL"' ]/is",$filecontent, $charsetarray);
if(strtolower($charsetarray[1][0])=="utf-8")
$filecontent=iconv( 'utf-8', 'gb18030//IGNORE' , $filecontent);
curl_close($ch);
return $filecontent;
}

?>

A customization:

Copy code The code is as follows:

$header[]= 'Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, text/html, * '. '/* ';
$header[]= 'Accept-Language : zh-cn ';
$header[]= 'User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727) ';
$header[] = 'Host: '.$Your target HOST;
$header[]= 'Connection: Keep-Alive ';
$header[]= 'Cookie: '.$Your COOKIE string;

curl_setopt($curlHandel,CURLOPT_HTTPHEADER,$header);

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