PHP Form File Upload

File Upload is very important part in any web application. PHP Provides very easy functions for file upload.

File Upload Example

Below example combines the HTML & PHP Code for file upload.

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<!doctype html>
<html>
	<head>
		<title>File Upload</title>
	</head>
	<body>
		<form action="" method="post" enctype="multipart/form-data" >
			Picture<input type="file" name="fiPicture" />
			<br />
			<input type="submit" value="Upload" name="Upload" />
		</form>
		
		
		<?php
			if(isset($_POST['Upload'])){
				$name=$_FILES['fiPicture']['name'];
				if(move_uploaded_file($_FILES['fiPicture']['tmp_name'],$name)){
					echo "<p>file has been Uploaded Successfully</p>";
				}else{
					echo "<p>Unable to upload file please try again.</p>";
				}
				
			}
		?>
	</body>
</html>

Get File Attributes Example

$_FILES Array provide other attributes such as file type, file size. below example will demonstrate how to get file size, file type

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<!doctype html>
<html>
	<head>
		<title>File Upload</title>
	</head>
	<body>
		<form action="" method="post" enctype="multipart/form-data" >
			Picture<input type="file" name="fiPicture" />
			<br />
			<input type="submit" value="Upload" name="Upload" />
		</form>
		
		
		<?php
			if(isset($_POST['Upload'])){
				$name=$_FILES['fiPicture']['name'];
				$type=$_FILES['fiPicture']['type'];
				$size=$_FILES['fiPicture']['size']; //size will come in bytes
				
				echo "Name=".$name."<br />";
				echo "Type=".$type."<br />";
				echo "Size=".$size."<br />";
			}
		?>
	</body>
</html>

Get File Extension Example

File extension comes with file name. below example will demonstrate how to fetch extension from name with the help of other functions

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<!doctype html>
<html>
	<head>
		<title>File Upload</title>
	</head>
	<body>
		<form action="" method="post" enctype="multipart/form-data" >
			Picture<input type="file" name="fiPicture" />
			<br />
			<input type="submit" value="Upload" name="Upload" />
		</form>
		
		
		<?php
			if(isset($_POST['Upload'])){
				$name=$_FILES['fiPicture']['name'];
				$fileParts=explode(".",$name);
				echo "File Extension is=".$fileParts[1]."<br>";
			}
		?>
	</body>
</html>

File Validation Example

Some times we require only image file or doc files with size limits. below example will demonstrate how to accomplish file validation with file type and size.

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<!doctype html>
<html>
	<head>
		<title>File Upload</title>
	</head>
	<body>
		<form action="" method="post" enctype="multipart/form-data" >
			Picture<input type="file" name="fiPicture" />
			<br />
			<input type="submit" value="Upload" name="Upload" />
		</form>
		
		
		<?php
			if(isset($_POST['Upload'])){
				$name=$_FILES['fiPicture']['name'];
				$type=$_FILES['fiPicture']['type'];
				$size=$_FILES['fiPicture']['size'];
				$fileParts=explode('.',$name); //divide the name into two parts
				$ext=strtolower($fileParts[1]); //extract the extension of file and convert it to lower case
				if($ext=="jpeg" || $ext=="jpg" || $ext=="png" || $ext=="gif" || $ext=="bmp"){
					if($size/1024<=200){ //size limit to 200KB
						if(move_uploaded_file($_FILES['fiPicture']['tmp_name'],$name)){
							echo "&ltp>file has been Uploaded Successfully</p>";
						}else{
							echo "<p>Unable to upload file please try again.</p>";
						}
					}else{
						echo "<p>Please upload less then 200KB image file</p>";
					}
				}else{
					echo "<p>Only Image Files are allowed such as jpg, png, gif & bmp</p>";
				}
			}
		?>
	</body>
</html>