详解php用curl调用接口方法，get和post两种方式

<?php 
/**
   * 模拟post进行url请求
   * @param string $url
   * @param array $post_data
   */
  function request_post($url = '',$ispost=true, $post_data = array()) {
    if (empty($url) || empty($post_data)) {
      return false;
    }
    
    $o = "";
    foreach ( $post_data as $k => $v ) 
    { 
      $o.= "$k=" . urlencode( $v ). "&" ;
    }
    $post_data = substr($o,0,-1);
    $key=md5(base64_encode($post_data));
    if($ispost){
      $url=$url;
    }else{
      $url = $url.'?'.$post_data;
    }
    
    
    $curlPost = 'key='.$key;
    header("Content-type: text/html; charset=utf-8");
    $ch = curl_init();//初始化curl
    curl_setopt($ch, CURLOPT_URL,$url);//抓取指定网页
    curl_setopt($ch, CURLOPT_HEADER, 0);//设置header
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//要求结果为字符串且输出到屏幕上
    if($ispost){
      curl_setopt($ch, CURLOPT_POST, 1);//post提交方式
      curl_setopt($ch, CURLOPT_POSTFIELDS, $curlPost);
    }
    $data = curl_exec($ch);//运行curl
    curl_close($ch);
    return $data;
  }
  ?>

<?php 
require 'ApiModel.php';
function testAction(){
    $url = '接口地址';
    $post_data['appid']    = '10';
    $post_data['appkey']   = 'cmbohpffXVR03nIpkkQXaAA1Vf5nO4nQ';
    $post_data['member_name'] = 'zsjs124';
    $post_data['password']  = '123456';
    $post_data['email']  = 'zsjs124@126.com';
    //$post_data = array();
    $res = request_post($url,$ispost=true,$post_data);    
    print_r($res);

  }
testAction();
?>

<?php 
function serverapi(){
  $key='57173d6ad842d807443ee0db91fed323';
  if($_GET&&$_GET['appkey']=='cmbohpffXVR03nIpkkQXaAA1Vf5nO4nQ'||$_POST&&$_POST['key']===$key){
    $arr=array('name'=>'huanglu','password'=>'123456');
    echo json_encode($arr);
  }else{
    exit('非法访问！');
  }
}
serverapi();
?>