PHP: Upload and Rename File

html_form

<form action="" enctype="multipart/form-data" method="post">
<input id="file" name="file" type="file" />
<input id="Submit" name="submit" type="submit" value="Submit" />
</form>

php

<?php

// Upload and Rename File

if (isset($_POST['submit']))
{
	$filename = $_FILES["file"]["name"];
	$file_basename = substr($filename, 0, strripos($filename, '.')); // get file extention
	$file_ext = substr($filename, strripos($filename, '.')); // get file name
	$filesize = $_FILES["file"]["size"];
	$allowed_file_types = array('.doc','.docx','.rtf','.pdf');	

	if (in_array($file_ext,$allowed_file_types) && ($filesize < 200000))
	{	
		// Rename file
		$newfilename = md5($file_basename) . $file_ext;
		if (file_exists("upload/" . $newfilename))
		{
			// file already exists error
			echo "You have already uploaded this file.";
		}
		else
		{		
			move_uploaded_file($_FILES["file"]["tmp_name"], "upload/" . $newfilename);
			echo "File uploaded successfully.";		
		}
	}
	elseif (empty($file_basename))
	{	
		// file selection error
		echo "Please select a file to upload.";
	} 
	elseif ($filesize > 200000)
	{	
		// file size error
		echo "The file you are trying to upload is too large.";
	}
	else
	{
		// file type error
		echo "Only these file typs are allowed for upload: " . implode(', ',$allowed_file_types);
		unlink($_FILES["file"]["tmp_name"]);
	}
}

?>

dats cool thanks. but can u upload one where the user can read the files from the folder using the browser

Great

goo job

Nice.....

Thank you so much!

Works great..Thank you

Thank you

Hi, Thank you for the code, I have just noticed some little mistakes on the comments:

$file_basename = substr($filename, 0, strripos($filename, '.')); // This returns file name
$file_ext = substr($filename, strripos($filename, '.')); // This returns file ext

good job dude thanks alot

its OK? for 5.3 PHP

````

thanku

exactly what I needed

Thanks!

Good

cool

hellz yeah

The code works okay.
Kindly I want to rename the uploaded file as per logged in user. Assist please

Thsk for the code!!!!

EliudMathu:You can this?

// Rename file
$file_basename = $_SESSION['username'] ;
$newfilename = $file_basename . $file_ext;

if the user name is Jon, you file is rename for Jon.pdf

firts, you need a Login system Regards,

Have a look at pathinfo(): http://php.net/manual/en/function.pathinfo.php

It's a lot easier (and less fragile) than calling strpos() and whatnot.

thanks man!

hello, I would like to use this that after loading any png image with the result after the upload must always be "image.png", I can not

Hi!
Thank you for this code very simple than mine.

One thing, I don't understand how it deal with "$allowed_file_types = array('.doc','.docx','.rtf','.pdf');"

Can you give me some explanations, please?

Thank you

EDIT: Do not matter about my question, I just didn't read carefully your code. Thank you.

good job

Thanks, the code was very helpful to me