PHP uses curl to implement get and POST to submit data

PHP uses curl to implement get and POST to submit data_PHP tutorial

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Release： 2016-07-13 17:06:39

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This article will introduce to you how PHP uses curl to implement get and POST to submit data. If you need to know more, you can refer to it.

Curl implements get submission data

The code is as follows

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//Initialize a cURL object

代码如下

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// 初始化一个 cURL 对象
$curl = curl_init();
// 设置你需要抓取的URL
curl_setopt($curl, CURLOPT_URL, 'http://www.bKjia.c0m');
// 设置header, 最后一个参数是0表示返回值不带有header，1表示带有header
curl_setopt($curl, CURLOPT_HEADER, 0);
// 设置浏览器的特定header,可选，如果目标网站有要求的话
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
"User-Agent: {'Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6 (.NET CLR 3.5.30729)'}",
"Accept-Language: {en-us,en;q=0.5}"
));
//或者只设置user-agent，可选，如果目标网站有要求的话
curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1");
// 设置cURL 参数，要求结果保存到字符串中还是输出到屏幕上，1表示保存到字符串
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
// 页面内容不需要时，设置为1. 默认为0
curl_setopt($ch, CURLOPT_NOBODY, 1);
// 运行cURL，请求网页,保存在$data
$data = curl_exec($curl);
// 关闭URL请求
curl_close($curl);
//检查错误
//比较的时候我们用的是“=== FALSE”，而非“== FALSE”，因为我们得区分’空输出‘和’布尔值FALSE‘
if ($output === FALSE) {
echo "cURL Error: " . curl_error($ch);
}
//可以获取信息
$info = curl_getinfo($ch);
echo '获取'. $info['url'] . '耗时'. $info['total_time'] . '秒';
/* ...返回的数组中包括了以下信息：
“url” //资源网络地址
“content_type” //内容编码
“http_code” //HTTP状态码
“header_size” //header的大小
“request_size” //请求的大小
“filetime” //文件创建时间
“ssl_verify_result” //SSL验证结果
“redirect_count” //跳转技术
“total_time” //总耗时
“namelookup_time” //DNS查询耗时
“connect_time” //等待连接耗时
“PRetransfer_time” //传输前准备耗时
“size_upload” //上传数据的大小
“size_download” //下载数据的大小
“speed_download” //下载速度
“speed_upload” //上传速度
“download_content_length”//下载内容的长度
“upload_content_length” //上传内容的长度
“starttransfer_time” //开始传输的时间
“redirect_time”//重定向耗时
*/

$curl = curl_init(); //Set the URL you need to crawl curl_setopt($curl, CURLOPT_URL, 'http://www.bKjia.c0m'); //Set the header. The last parameter is 0, which means the return value does not have a header, and 1, which means it has a header curl_setopt($curl, CURLOPT_HEADER, 0); // Set the specific header of the browser, optional, if the target website requires it curl_setopt($ch, CURLOPT_HTTPHEADER, array( "User-Agent: {'Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6 (.NET CLR 3.5.30729)'}", "Accept-Language: {en-us,en;q=0.5}" )); //Or just set user-agent, optional, if the target website requires it curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1"); //Set the cURL parameters to ask whether the results are saved in a string or output to the screen. 1 means saving to a string curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // When the page content is not needed, set it to 1. The default is 0 curl_setopt($ch, CURLOPT_NOBODY, 1); // Run cURL, request the web page, and save it in $data $data = curl_exec($curl); // Close URL request curl_close($curl); //Check for errors //When comparing, we use "=== FALSE" instead of "== FALSE" because we have to distinguish between 'empty output' and 'Boolean value FALSE' if ($output === FALSE) { echo "cURL Error: " . curl_error($ch); } //Information can be obtained $info = curl_getinfo($ch); echo 'Get'. $info['url'] . 'Time consuming'. $info['total_time'] . 'Seconds'; /* ...The returned array includes the following information: "url" //Resource network address “content_type” //Content encoding "http_code" //HTTP status code “header_size” //Header size "request_size" //Request size "filetime" //File creation time "ssl_verify_result" //SSL verification result “redirect_count” //Jump technology “total_time” //Total time spent "namelookup_time" //DNS query time “connect_time” //Time spent waiting for connection “PRetransfer_time” //The preparation time before transfer “size_upload” //Size of uploaded data “size_download” //Size of downloaded data “speed_download” //Download speed “speed_upload” //Upload speed "download_content_length" //The length of the download content “upload_content_length” //The length of the uploaded content “starttransfer_time” //Time to start transfer "redirect_time"//redirect time */

curl实现POST提交数据

http的post实现

代码如下

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//extract data from the post
extract($_POST) ;　
//set POST variables
$url = 'http://www.bKjia.c0m' ;
$fields = array(
　　　　　　　　　　　　'lname'=>urlencode($last_name) ,
　　　　　　　　　　　　'fname'=>urlencode($first_name) ,
　　　　　　　　　　　　'title'=>urlencode($title) ,
　　　　　　　　　　　　'company'=>urlencode($institution) ,
　　　　　　　　　　　　'age'=>urlencode($age) ,
　　　　　　　　　　　　'email'=>urlencode($email) ,
　　　　　　　　　　　　'phone'=>urlencode($phone)
　　　　　　　　);　
//url-ify the data for the POST
foreach($fields as $key=>$value) { $fields_string .= $key.'='.$value.'&' ; }
rtrim($fields_string ,'&') ;
//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($fields)) ;
curl_setopt($ch, CURLOPT_POSTFIELDS,$fields_string) ;
//execute post
$result = curl_exec($ch) ;
//close connection
curl_close($ch) ;