How can PHP users ensure that uploaded files are not converted into text files unintentionally?

When uploading files using PHP, it's important to set the appropriate encoding type in the form to ensure that the uploaded files are not converted into text files unintentionally. This can be done by setting the enctype attribute of the form to "multipart/form-data". This ensures that the file data is sent as a binary stream rather than being interpreted as text. 

<form action="upload.php" method="post" enctype="multipart/form-data">
    <input type="file" name="file">
    <input type="submit" value="Upload">
</form>

Keywords

PHP file upload MIME type file extension content-type.

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