What are common reasons for encountering an empty POST array in PHP when uploading files?

When encountering an empty POST array in PHP when uploading files, it is likely due to the file size exceeding the maximum upload limit set in the php.ini file or in the form's enctype attribute being set incorrectly. To solve this issue, you can increase the upload_max_filesize and post_max_size values in the php.ini file or ensure that the form has the correct enctype attribute set to "multipart/form-data". 

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

Keywords

file upload POST array enctype max_file_size php.ini

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