How can PHP beginners avoid common mistakes when trying to submit forms using images?

When submitting forms with images in PHP, beginners often forget to set the `enctype` attribute of the form to `multipart/form-data`. This is necessary to properly handle file uploads. To avoid this common mistake, make sure to include `enctype="multipart/form-data"` in your form tag. 

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

Keywords

PHP form submission images file upload validation

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