There are different options to increase file upload limit in PHP. First is changing PHP configuration file (php.ini) and restarting webserver or overwriting the php.ini value in .htacces (this option is available if you are running Apache).

There are 2 directives which affect upload limit i.e. upload_max_filesize and post_max_size.

Now we look at the first method. First you have to find out where the php.ini is. To find out the location, make a .php file containing only this code and place it in your webroot and point your browser to this file.

< ?php phpinfo(); ?>

In the page output you can find Configuration File Path. Open this file and change the values for upload_max_filesize and post_max_size according to your requirement e.g. to set 10MB upload limit, the values will be
upload_max_filesize = 10M
post_max_size = 10M

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