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

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

php apache file-upload

apache

Storing PHP(/PHP-FPM/Apache)'s temporary-from-upload files in RAM rather than the filesystem (or encrypted only)?

php security apache file-upload temporary-files

apache

Maximum number of allowable file uploads has been exceeded

php apache file-upload

apache

move_uploaded_file failed to open stream: Permission denied - Mac

php apache file-upload upload xampp

apache

Relationship between php’s memory_limit, upload_max_filesize and post_max_filesize

php apache configuration file-upload

apache

upload large files using php, apache

php apache file-upload

apache

How to limit file upload speed in php or apache?

php apache zend-framework file-upload

apache

net::ERR_CONNECTION_RESET when large file takes longer than a minute

php apache file-upload

apache

Process Uploaded file on web server without storing locally first?

php node.js apache file-upload dropzone.js

apache

Is there a way to get to partially uploaded files?

php apache file-upload

apache

How to stop a oversize file upload while upload is in process?

php apache file-upload size limit

apache

How to Read Chunked Data from Phone Gap File Upload in Android

php android apache file-upload cordova

apache

How do you simulate a realistic file upload time on your local machine using <input type="file"/>?

apache file-upload localhost mamp

apache

Upload Timeout Issue Under Apache/Perl

perl apache file-upload timeout

apache

Apache File Upload Exception while uploading files greater than 2 MB

apache tomcat file-upload gwtupload

apache