What are common issues encountered when uploading files in PHP, specifically related to missing "_type" and "_filesize" values from the form?

When uploading files in PHP, missing "_type" and "_filesize" values from the form can cause issues with file validation and processing. To solve this problem, ensure that the form fields for file upload include "enctype='multipart/form-data'" and check for the presence of the "_type" and "_filesize" values in the $_FILES array before processing the uploaded file. 

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

```php
if(isset($_FILES['file']['type']) && isset($_FILES['file']['size'])) {
    // Process the uploaded file
    $fileType = $_FILES['file']['type'];
    $fileSize = $_FILES['file']['size'];
    // Additional file processing code
} else {
    echo "File type or size missing.";
}

Keywords

PHP file upload _type _filesize form.

Related Questions