而不是图像文件，我得到“数组”这个词

Question

我错过了一件事。当我在收件箱中收到此电子邮件时，它没有上传的图像。字面上说：

状态：学生 第一：约翰 上一篇：Doe 中：没有 地点：纽约州纽约市 毕业：2014年 性别：男性 图片：数组

我需要知道如何获取图像而不是“数组”这个词。请不要推荐PHPmailer或任何其他选项。我想帮助这个编码，只有这个编码。谢谢。

<?php
$accounttype = $_POST['accounttype'];
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$middlename = $_POST['middlename'];
$email = $_POST['email'];
$location = $_POST['location'];
$year = $_POST['year'];
$gender = $_POST['gender'];
$file = $_FILES['file'];
$formcontent = "Status: $accounttype \r\n  First: $firstname \r\n  Last:$lastname \r\n Middle:$middlename \r\n Where:$location \r\n Grad:$year \r\n Gender:$gender \r\n Image:$file";
$recipient = "example@gmail.com";
$subject = "Registration Form";
$mailheader = "From: $email \r\n";
mail($recipient, $subject, $formcontent, $mailheader) or die("Error!");
echo "Thank You!" . " -" . "<a href='../../index.html' style='text-decoration:none;color:#ff0099;'> Return Home</a>";
?>

body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, form, fieldset, input, textarea, p, blockquote, th, td { 
  	padding:0;
  	margin:0;
}

fieldset, img {
	border: 0;
}

ol, ul, li {
	list-style: none;
}

:focus {
	outline: none;
}

body, input, textarea, select {
  	font-family: 'Open Sans', sans-serif;
  	font-size: 16px;
  	color: #4c4c4c;
}

p {
  	font-size: 12px;
  	width: 150px;
  	display: inline-block;
  	margin-left: 18px;
}

h1 {
  font-size: 32px;
  font-weight: 300;
  color: #4c4c4c;
  text-align: center;
  padding-top: 10px;
  margin-bottom: 10px;
}

html{
  background-color: #ffffff;
}

.testbox {
  margin: 20px auto;
  width: 343px; 
  -webkit-border-radius: 8px/7px; 
  -moz-border-radius: 8px/7px; 
  border-radius: 8px/7px; 
  background-color: #ebebeb; 
  -webkit-box-shadow: 1px 2px 5px rgba(0,0,0,.31); 
  -moz-box-shadow: 1px 2px 5px rgba(0,0,0,.31); 
  box-shadow: 1px 2px 5px rgba(0,0,0,.31); 
  border: solid 1px #cbc9c9;
}

input[type=radio] {
  visibility: hidden;
}

form {
	height:auto;
  	margin: 0 30px;
}

label.radio {
	cursor: pointer;
  	text-indent: 35px;
  	overflow: visible;
  	display: inline-block;
  	position: relative;
  	margin-bottom: 15px;
}

label.radio:before {
  	background: #3a57af;
  	content:'';
  	position: absolute;
  	top:2px;
  	left: 0;
  	width: 20px;
  	height: 20px;
  	border-radius: 100%;
}

label.radio:after {
	opacity: 0;
	content: '';
	position: absolute;
	width: 0.5em;
	height: 0.25em;
	background: transparent;
	top: 7.5px;
	left: 4.5px;
	border: 3px solid #ffffff;
	border-top: none;
	border-right: none;
	-webkit-transform: rotate(-45deg);
	-moz-transform: rotate(-45deg);
	-o-transform: rotate(-45deg);
	-ms-transform: rotate(-45deg);
	transform: rotate(-45deg);
}

input[type=radio]:checked + label:after {
	opacity: 1;
}

hr {
  	color: #a9a9a9;
  	opacity: 0.3;
}

input[type=text],input[type=email],input[type=number] {
  	width: 200px; 
  	height: 39px; 
  	-webkit-border-radius: 0px 4px 4px 0px/5px 5px 4px 4px; 
  	-moz-border-radius: 0px 4px 4px 0px/0px 0px 4px 4px; 
  	border-radius: 0px 4px 4px 0px/5px 5px 4px 4px; 
  	background-color: #fff; 
  	-webkit-box-shadow: 1px 2px 5px rgba(0,0,0,.09); 
  	-moz-box-shadow: 1px 2px 5px rgba(0,0,0,.09); 
  	box-shadow: 1px 2px 5px rgba(0,0,0,.09); 
  	border: solid 1px #cbc9c9;
  	margin-left: -5px;
  	margin-top: 13px; 
  	padding-left: 10px;
}

input[type=password] {
  	margin-bottom: 25px;
}

#icon {
  	display: inline-block;
  	width: 30px;
  	background-color: #3a57af;
  	padding: 8px 0px 8px 15px;
  	margin-left: 15px;
  	-webkit-border-radius: 4px 0px 0px 4px; 
  	-moz-border-radius: 4px 0px 0px 4px; 
  	border-radius: 4px 0px 0px 4px;
  	color: white;
  	-webkit-box-shadow: 1px 2px 5px rgba(0,0,0,.09);
  	-moz-box-shadow: 1px 2px 5px rgba(0,0,0,.09); 
  	box-shadow: 1px 2px 5px rgba(0,0,0,.09); 
  	border: solid 0px #cbc9c9;
}

.gender {
  	margin-left: 30px;
  	margin-bottom: 30px;
}

.accounttype {
  	margin-left: 8px;
  	margin-top: 20px;
}

.button {
  	font-size: 14px;
  	font-weight: 600;
  	color: white;
  	padding: 6px 25px 0px 20px;
  	margin: 10px 8px 20px 0px;
  	display: inline-block;
  	float: right;
  	text-decoration: none;
  	width: auto; height: 27px; 
  	-webkit-border-radius: 5px; 
  	-moz-border-radius: 5px; 
  	border-radius: 5px; 
  	background-color: #3a57af; 
  	-webkit-box-shadow: 0 3px rgba(58,87,175,.75); 
  	-moz-box-shadow: 0 3px rgba(58,87,175,.75); 
  	box-shadow: 0 3px rgba(58,87,175,.75);
  	transition: all 0.1s linear 0s; 
  	top: 0px;
  	position: relative;
}

.button:hover {
  	top: 3px;
  	background-color:#2e458b;
  	-webkit-box-shadow: none; 
  	-moz-box-shadow: none; 
  	box-shadow: none;
}

<body>
<link href='http://fonts.googleapis.com/css?family=Open+Sans:400,300,300italic,400italic,600' rel='stylesheet' type='text/css'>
<link href="//netdna.bootstrapcdn.com/font-awesome/3.1.1/css/font-awesome.css" rel="stylesheet">
<?php echo $output; ?>

<div class="testbox">
	<h1>Registration</h1>
		<form action="assets/php/mail.php" method="post" enctype="multipart/form-data">
<hr>
<div class="accounttype">
	<input type="radio" value="student" id="student" name="accounttype" checked/>
	<label for="student" class="radio" chec>Student</label>
	<input type="radio" value="faculty" id="faculty" name="accounttype" />
	<label for="faculty" class="radio">Faculty</label>
</div>
<hr>
	<label id="icon" for="name"><i class="icon-user "></i></label>
	<input type="text" name="firstname" id="firstname" placeholder="First Name" required/>
	<label id="icon" for="name"><i class="icon-user"></i></label>
	<input type="text" name="lastname" id="lastname" placeholder="Last Name" required/>
	<label id="icon" for="name"><i class="icon-shield"></i></label>
	<input type="text" name="middlename" id="middlename" placeholder="Middle Name"/>
<hr>
	<label id="icon" for="name"><i class="icon-envelope "></i></label>
	<input type="email" name="email" id="email" placeholder="Email Address" required/>
	<label id="icon" for="name"><i class="icon-map-marker "></i></label>
	<input type="text" name="location" id="location" placeholder="City, State" required/>
	<label id="icon" for="name"><i class="icon-shield"></i></label>
	<input type="number" name="year" id="year" placeholder="Graduation Year" required/>
<hr>
<div class="gender">
	<input type="radio" value="male" id="male" name="gender" checked/>
	<label for="male" class="radio" chec>Male</label>
	<input type="radio" value="female" id="female" name="gender" />
	<label for="female" class="radio">Female</label>
<hr>
	<p>Upload full body image</p>
    <input type="file" accept="image/*;capture=camera" name="file">
</div> 
<p>By clicking Register, you agree on our <a href="#">terms and condition</a>.</p>
	<input type="submit" class="button" value="Send" />
</form>
</div>
</body>