ERROR plugin will not activate

hi there when i try to activivate your plugin i recieve this error

Parse error: syntax error, unexpected ‘[‘ in /home3/mcpeanut/public_html/wp-content/plugins/upload-quota-per-user/upload-quota-per-user.php on line 118

defaulty twenty twelve theme php 5.3 …can you help me solve this please or if not can you help me limit the amount each user is allowed to upload by giving me the code i would need and where to paste it? i really need to limit my users to be able to upload no more than 150mb each, and i cant find any help on how to do this, i would love to get this plugin working!

please respond bro ty

https://www.ads-software.com/plugins/upload-quota-per-user/