php curl工具能很方便的发送请求。
php使用socket方式也可以发送请求,虽然原始,但是能够体会到GET,POST,等请求的细节,对于理解HTTP协议有帮助。
<?php
/**
* Created by PhpStorm.
* User: zhaozhiliang
* Date: 2018/6/25
* Time: 下午4:59
*/
class HttpRequest
{
private $_ip = '';
private $_host = '';
private $_url = '';
private $_port = '';
private $_errno = '';
private $_errstr = '';
private $_timeout = 15;
private $_fp = null;
private $_formdata = array();
private $_filedata = array();
//设置连接参数
public function setConfig($config){
$this->_ip = isset($config['ip'])? $config['ip'] : '';
$this->_host = isset($config['host'])? $config['host'] : '';
$this->_url = isset($config['url']) ? $config['url'] : '';
$this->_port = isset($config['port']) ? $config['port'] : '';
$this->_errno = isset($config['errno']) ? $config['errno'] : '';
$this->_errstr = isset($config['errstr']) ? $config['errstr'] : '';
$this->_timeout = isset($config['timeout']) ? $config['timeout'] : 15;
//如果没有ip,则用host代替
if($this->_ip==''){
$this->_ip = $this->_host;
}
}
//设置表单数据
public function setFormData($formdata = array()){
$this->_formdata = $formdata;
}
//设置文件数据
public function setFileData($filedata = array()){
$this->_filedata = $filedata;
}
public function send($type= 'get'){
$type = strtolower($type);
if(!in_array($type, array('get','post','multipart'))){
return false;
}
if(! $this->connect()){
return false;
}
switch ($type){
case 'get' :
$out = $this->sendGet();
break;
case 'post' :
$out = $this->sendPost();
break;
case 'multipart' :
$out = $this->sendMultipart();
break;
}
if(!$out){
return false;
}
//发送数据
fputs($this->_fp, $out);
//读取返回数据
$response = '';
while($row = fread($this->_fp, 4096)){
$response .= $row;
}
//echo 'response:', $response;
//断开连接
$this->disconnect();
$pos = strpos($response, "\r\n\r\n");
$response = substr($response, $pos+ 4);
return $response;
}
//创建连接
private function connect(){
$this->_fp = fsockopen($this->_ip, $this->_port, $this->_errno,$this->_errstr,$this->_timeout);
if(!$this->_fp){
return false;
}
return true;
}
//断开连接
private function disconnect(){
if($this->_fp != null){
fclose($this->_fp);
$this->_fp = null;
}
}
//GET 方式,
private function sendGet(){
//检查是否空数据
if(!$this->_formdata){
return false;
}
//处理url
$url = $this->_url.'?'.http_build_query($this->_formdata);
$out = "GET ".$url." HTTP/1.1\r\n";
$out .= "host: ".$this->_host."\r\n";
$out .= "connection: close\r\n\r\n";
return $out;
}
//POST 方式,处理发送的数据
private function sendPost(){
//检查是否空数据
if(!$this->_formdata && !$this->_filedata){
return false;
}
//form data
$data = $this->_formdata ? $this->_formdata : array();
// //file data
// if($this->_filedata){
// foreach($this->_filedata as $file){
// if(file_exists($file['path'])){
// $data[$file['name']] = file_get_contents($file['path']);
// }
// }
// }
if(!$data){
return false;
}
$data = http_build_query($data);
$out = "POST ".$this->_url." HTTP/1.1\r\n";
$out .= "host: ".$this->_host."\r\n";
$out .= "content-type: application/x-www-form-urlencoded\r\n";
$out .= "content-length: ".strlen($data)."\r\n";
$out .= "connection: close\r\n\r\n";
$out .= $data;
return $out;
}
//multipart 方式, 发送数据文件使用此方式
private function sendMultipart(){
//检查是否空数据
if(!$this->_formdata && !$this->_filedata){
return false;
}
//设置分割标识符
$boundary = '---------------------------'.substr(md5(rand(0,32000)), 0, 10);
$data = '--'.$boundary."\r\n";
//form data
$formdata = '';
foreach($this->_formdata as $key=> $val){
$formdata .= "content-disposition: form-data; name=\"".$key."\"\r\n";
$formdata .= "content-type: text/plain\r\n\r\n";
if(is_array($val)){
$formdata .= json_encode($val)."\r\n";
}else{
$formdata .= rawurldecode($val)."\r\n";
}
$formdata .= '--'.$boundary."\r\n";
}
//file data
$filedata = '';
foreach($this->_filedata as $val){
if(file_exists($val['path'])){
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$mimetype = finfo_file($finfo, $val['path']);
finfo_close($finfo);
$filedata .= "content-disposition: form-data; name=\"".$val['name']."\"; filename=\"".$val['filename']."\"\r\n";
$filedata .= "content-type: ".$mimetype."\r\n\r\n";
$filedata .= implode('', file($val['path']))."\r\n";
$filedata .= "--".$boundary."\r\n";
}
}
if(!$formdata && !$filedata){
return false;
}
$data .= $formdata.$filedata."--\r\n\r\n";
$out = "POST ".$this->_url." HTTP/1.1\r\n";
$out .= "host: ".$this->_host."\r\n";
$out .= "content-type: multipart/form-data; boundary=".$boundary."\r\n";
$out .= "content-length: ".strlen($data)."\r\n";
$out .= "connection: close\r\n\r\n";
$out .= $data;
return $out;
}
}
/**
* 以下为测试
*/
$config = array(
'ip' => 'blog.liang.com',
'host' => 'blog.liang.com',
'port' => 80,
'errno' => '',
'errstr' => '',
'timeout' => 30,
'url' => '/test_multipart.php'
);
$formdata = array(
'name'=>'zhangsan',
'real_name' => '张三',
'age' => 29 ,
'sex'=> 1,
'address'=> 'beijing'
);
$filedata = array(
array(
'name' => 'logo',
'filename' => 'logo.png',
'path' => './logo.png'
)
);
$obj = new HttpRequest();
$obj-> setConfig($config);
$obj-> setFormdata($formdata);
$obj-> setFileData($filedata);
#$result = $obj->send('get');
$result = $obj->send('post');
#$result = $obj->send('multipart');
print_r($result);
说明:
1. fileinfo 扩展需要phpize 安装,不用重新下载包了,php5.5.7安装包 的 ext目录下有。