Why would $_FILES be empty when uploading files to PHP?

Why would $_FILES be empty when uploading files to PHP?

php apache file-upload

php

Multiple file upload in php

php file-upload

php

How to access route, post, get etc. parameters in Zend Framework 2

php file-upload zend-route zend-framework2

php

how to do file upload using jquery serialization

php jquery ajax serialization file-upload

php

What is the best way to upload and store pictures on the site?

php file-upload

php

How to rename uploaded file before saving it into a directory?

php mysql file-upload file-rename

php

Send File Attachment from Form Using phpMailer and PHP

php file-upload phpmailer email-attachments

php

Why does PHP store uploaded files in a temporary location and what is the benefit?

php file-upload

php

PHP check if file is an image [duplicate]

php image file-upload getimagesize

php

Full Secure Image Upload Script

php image security file-upload upload

php

Check file extension in upload form in PHP [duplicate]

php file-upload

php

How to upload & Save Files with Desired name

php file-upload

php

How to send multiple files in postman ReSTful web service?

php web-services rest file-upload postman

php

Check file uploaded is in csv format

php syntax file-upload content-type

php

How to check file types of uploaded files in PHP?

php validation file-upload mime-types

php