PHP开发API接口(注册、登录、查询用户资料)

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　　一、服务端部分

<?php
require 'conn.php';
header('Content-Type:text/html;charset=utf-8');
$action = $_GET['action'];
switch ($action) {
//注册会员
case&quot;adduserinfo&quot;;
$username = lib_replace_end_tag(trim($_GET['username']));
$password2 = lib_replace_end_tag(trim($_GET['userpassword']));
$password = md5(&quot;$password2&quot; . ALL_PS);
$email = lib_replace_end_tag(trim($_GET['email']));
if ($username == '' || $password2 == '' || $password == '') {
$res = urlencode(&quot;参数有误&quot;);
exit(json_encode($res)); //有空信息
}
$sql = &quot;select username from `member` where username='$username'&quot;;
$query = mysql_query($sql, $conn);
$count = mysql_num_rows($query);
if ($count > 0) {
exit(json_encode(1)); //返回1表示注册失败
} else {
$addsql = &quot;insert into `member` (username,password,email) values ('$username','$password','$email')&quot;;
mysql_query($addsql);
exit(json_encode(0)); //返回0表示注册成功
}
break;

//查询用户信息
case&quot;selectuserinfo&quot;;
$username = lib_replace_end_tag($_GET['username']);
$sql = &quot;select id,username,nickname,mobile from `member` where username='$username'&quot;;
$query = mysql_query($sql, $conn);
$row = mysql_fetch_array($query);
foreach ($row as $key => $v) {
$res[$key] = urlencode($v);
}
exit(json_encode($res));
break;

//会员登录
case&quot;userlogin&quot;;
$username = lib_replace_end_tag($_GET['username']);
$password2 = lib_replace_end_tag(trim($_GET['userpassword']));
$password = md5(&quot;$password2&quot; . ALL_PS);
$sqluser = &quot;select id,username,password from `member` where username='&quot; . $username . &quot;' and password='&quot; . $password . &quot;'&quot;;
$queryuser = mysql_query($sqluser);
$rowuser = mysql_fetch_array($queryuser);
if ($rowuser && is_array($rowuser) && !empty($rowuser)) {
if ($rowuser['username'] == $username && $rowuser['password'] == $password) {
if ($rowuser['password'] == $password) {
$res = urlencode(&quot;登录成功&quot;);
exit(json_encode($res));
} else {
$res = urlencode(&quot;密码错误&quot;);
exit(json_encode($res));
}
} else {
$res = urlencode(&quot;用户名不存在&quot;);
exit(json_encode($res));
}
} else {
$res = urlencode(&quot;用户名密码错误&quot;);
exit(json_encode($res));
}
/*
* 0：表示登录成功，1：表示密码错误，2：用户名不存在，3：用户名密码错误
*/
break;
default:
exit(json_encode(error));
}
?>

　　二、客户端部分

<?php
header('Content-Type:text/html;charset=utf-8'); //避免输出乱码
function httpPost($url, $parms) {
$url = $url . $parms;
if (($ch = curl_init($url)) == false) {
throw new Exception(sprintf(&quot;curl_init error for url %s.&quot;, $url));
}
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 600);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
if (is_array($parms)) {
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: multipart/form-data;'));
}
$postResult = @curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($postResult === false || $http_code != 200 || curl_errno($ch)) {
$error = curl_error($ch);
curl_close($ch);
throw new Exception(&quot;HTTP POST FAILED:$error&quot;);
} else {
// $postResult=str_replace(&quot;\xEF\xBB\xBF&quot;, '', $postResult);
switch (curl_getinfo($ch, CURLINFO_CONTENT_TYPE)) {
case 'application/json':
$postResult = json_decode($postResult);
break;
}
curl_close($ch);
return $postResult;
}
}
$postUrl = &quot;http://pujia.test.com/api/server.php&quot;;
$p=$_GET['p'];
if ($p ==&quot;selectuserinfo&quot;) {
$username = $_GET['username'];
$parms = &quot;?action=selectuserinfo&username=&quot; . $username . &quot;&quot;;
} elseif ($p ==&quot;adduserinfo&quot;) {
$username = $_GET['username'];
$userpassword = $_GET['userpassword'];
$parms = &quot;?action=adduserinfo&username=&quot; . $username . &quot;&userpassword=&quot; . $userpassword . &quot;&quot;;
} elseif ($p ==&quot;userlogin&quot;) {
$username = $_GET['username'];
$userpassword = $_GET['userpassword'];
$parms = &quot;?action=userlogin&username=&quot; . $username . &quot;&userpassword=&quot; . $userpassword . &quot;&quot;;
}
$res = httpPost($postUrl, $parms); //$parms
$res = json_decode($res);
print_r(urldecode(json_encode($res)));
?>