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Simple uploader Using PHP

  1. #1
    Moderator speed2x's Avatar
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    Mar 2013
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    Cool Simple uploader Using PHP

    I create a lot of websites that allow administrators to upload files to their own website. Since allowing user customization has become more and more important on websites these days, I thought I'd share how easy it is to handle file uploads in PHP.

    The XHTML Form

    HTML Code:
    <form action="accept-file.php" method="post" enctype="multipart/form-data">
    	Your Photo: <input type="file" name="photo" size="25" />
    	<input type="submit" name="submit" value="Submit" />
    You'll need to use the multipart/form-data value for the form's enctype property. You'll also obviously need at least one input element of the file type. The form's action tag must provide a URL which points the a file containing the piece of PHP below.

    The PHP

    PHP Code:
    //if they DID upload a file...
    //if no errors...
    //now is the time to modify the future file name and validate the file
    $new_file_name strtolower($_FILES['photo']['tmp_name']); //rename file
    if($_FILES['photo']['size'] > (1024000)) //can't be larger than 1 MB
    $valid_file false;
    $message 'Oops!  Your file\'s size is to large.';
    //if the file has passed the test
    //move it to where we want it to be
    move_uploaded_file($_FILES['photo']['tmp_name'], 'uploads/'.$new_file_name);
    $message 'Congratulations!  Your file was accepted.';
    //if there is an error...
    //set that to be the returned message
    $message 'Ooops!  Your upload triggered the following error:  '.$_FILES['photo']['error'];

    //you get the following information for each file:
    My commenting in the PHP above outlines the way the process works, so I'll just mention a few notes about file uploads in PHP:

    Many shared hosting servers allow a very low maximum file upload size. If you plan on accepting larger files, you should consider a dedicated or virtual dedicated server.

    To adjust the file upload size in PHP, modify the php.ini file's "upload_max_filesize" value. You can also adjust this value using PHP's .ini_set() function.

    The file upload counts towards the hosting environment's $_POST size, so you may need to increase the php.ini file's post_max_size value.

    Be sure to do a lot of file validation when allowing users to upload files. How horrible would it be to allow a user to upload a .exe file to your server? They could do horrible things on the server.

    View more threads in the same category:

  2. #2
    Junior Member
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    Sep 2018
    United Kingdom
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    A PHP content can be utilized with a HTML structure to enable clients to transfer documents to the server. At first records are transferred into a brief index and after that moved to an objective goal by a PHP content.

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