IT Education PHP is_int function not working fix By Magic Monk on Sunday, January 20, 2019 In this tutorial I discuss how to use PHP check whether the input in a textbox is an integer or not, by using the floor() function instead of the is_int function education programming steempress technology Previous Post Next Post Related Posts IT Education How to mark external emails in a different color (Outlook 365 conditional formatting) IT Education Outlook Office 365 – How to assign different colors to different senders’ e-mails IT Education Microsoft Word Ink button grayed out / missing fix (Wacom Tablet)