我收到此错误。有人请帮忙。我是PHP的新手。
Array（[avatar] =＆gt; Array（[name] =＆gt; Icon.jpeg [type] =＆gt; image / jpeg [tmp_name] =＆gt; C：\ xampp \ tmp \ phpE3B9.tmp [error] =＆gt; 0 [size] =＆gt; 3687））
<?php
session_start();
$_SESSION['message']='';
$con = mysqli_connect("localhost","root","");
if(!mysqli_select_db($con,"smart")) //Database connected.
{
echo 'Database not selected';
}
else{
$mysqli = new mysqli("localhost", "root", "", "smart");
}
if($_SERVER['REQUEST_METHOD']=='POST'){
//Two Passwords should be equal to each other
if($_POST['password']==$_POST['confirmpassword']){
print_r($_FILES);die;
$username =$mysqli->real_escape_string($_POST['username']);
$email=$mysqli->real_escape_string($_POST['email']);
$password = md5($_POST['password']);//md5 hash password security
$avatar_path= $mysqli->real_escape_string('images/'.$_FILES['avatar']['name']);
//make sure file type is image.
if(preg_match("!image!", $_FILES['avatar']['type'])){
//Now copy image to images folder.
if(copy($_FILES['avatar']['tmp_name'], $avatar_path)){
$_SESSION['username']=$username;
$_SESSION['avatar']=$avatar_path;
$sql= "INSERT INTO users(username,email,password,avatar)"."VALUES('$username','$email','$password','$avatar_path')";
//if the query is successful, redirect to welcome.php page.
if($mysqli->query($sql)==true){
$_SESSION['message']="Registeration successful! Added $username to the database!";
header("location:welcome.php");
}
else{
$_SESSION['message']="User could not be added to the database!";
}
}
else{
$_SESSION['message']="File Upload failed!";
}
}
else{
$_SESSION['message']="Please only upload GIF,PNG or JPEG images!";
}
}
else{
$_SESSION['message']="Two passwords do not match!";
}
}
?>
<link href="//db.onlinewebfonts.com/c/a4e256ed67403c6ad5d43937ed48a77b?family=Core+Sans+N+W01+35+Light" rel="stylesheet" type="text/css"/>
<link rel="stylesheet" href="form.css" type="text/css">
<body background="About.png">
<div class="body-content">
<div class="module">
<h1>Create an account</h1>
<form class="form" action="form.php" method="post" enctype="multipart/form-data" autocomplete="off">
<div class="alert alert-error"><?= $_SESSION['message'] ?></div>
<input type="text" placeholder="User Name" name="username" required />
<input type="email" placeholder="Email" name="email" required />
<input type="password" placeholder="Password" name="password" autocomplete="new-password" required />
<input type="password" placeholder="Confirm Password" name="confirmpassword" autocomplete="new-password" required />
<div class="avatar"><label>Select your avatar: </label><input type="file" name="avatar" accept="image/*" required /></div>
<input type="submit" value="Register" name="register" class="btn btn-block btn-primary" />
</form>
</div>
</div>
</body>