curl是最常用功能之一
初始化句柄
$ch = curl_init();

post 傳$data
1. 如果$data是字符串，則Content-Type是application/x-www-form-urlencoded。
2、如果$data是k=>v的數組，則Content-Type是multipart/form-data,

編碼設置
$header = array(‘Content-Type:application/x-www-form-urlencoded;charset=utf8‘);
curl_setopt($ch,CURLOPT_HTTPHEADER,$header
 
);

post方式
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

返回值
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);

超時
curl_setopt($ch, CURLOPT_TIMEOUT, 20);

執行
curl_exec($ch);

是否有異常
if (curl_errno($ch)) 

關閉
curl_close($ch);

一個實例，post數據到某短信端口：

/*
 
*
* $sender 發送人
*$reveivers 收信人手機號 數據格式
*$msg 短信內容
*sname 發送人姓名
*/
function send($sender,$receivers,$msg,$sname){
    
  $tos = "";
  foreach ($receivers as $v) {  //將收信人轉為以‘,‘分割的字符串
    $tos .= $v.",";
  }
 
  $userName = ‘hnxxx**‘;
  $pwd = ‘fuckwl***‘;
  $st = date(‘mdHis‘);　　

  $post_data = array () ;

  $post_data[‘UserName‘] = $userName;

  $post_data[‘Key‘] = getKey($userName, $pwd, $st);

  $post_data[‘Timestemp‘] = $st;
  $post_data[‘Content‘] = ‘【前綴】‘.$msg;
  $post_data[‘CharSet‘] = ‘utf-8‘;
  $post_data[‘Mobiles‘] = $tos;
  $url = ‘http://www.xxx.com:3070/Http_Service/SendSms‘;
  $o = "" ;
  foreach ( $post_data as $k => $v )
  {
       $o .= "$k=".urlencode($v)."&" ;
  }
  $post_data = substr($o, 0, -1) ;
  
  $curl = curl_init();
  $header = array(‘Content-Type:application/x-www-form-urlencoded;charset=utf8‘);
  curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
  curl_setopt($curl, CURLOPT_URL, $url); 
  curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
  curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
  curl_setopt($curl, CURLOPT_POST, 1);
  curl_setopt($curl, CURLOPT_POSTFIELDS, $post_data);
  curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
  $result = curl_exec($curl);
  if (curl_errno($curl)) {
     echo ‘Errno‘.curl_error($curl);
  }
  curl_close($curl);
 
  echo $result;
  echo $post_data;
  
}

php curl那點事兒