Checking if field is empty AND using !is_numeric

Posted on 16th Feb 2014 07:03 pm by admin

Hi lads,

Need to be able to display an error message (using isset?) that says "Cant leave field blank" when someone clicks on submit after leaving the field blank. The problem is that I'm also using the !is numeric function and that has an error message of "please enter numbers only" . Problem is that if someone leaves the field blank, the !is_numeric function picks up that there are no numbers before isset does and therefore outputs "please enter numbers" .

Anyone have any idea's how to fix this ?
My code is :

| <?phpfunction validate_form(){ $entered_grade = trim($_REQUEST['entergrade']); $error = ''; if (! isset($entered_grade)) { $error .= "<span class="error">You cannot leave the grade blank. Enter a mark between 0 and 100.</span>
"; }if (! is_numeric($entered_grade)) { $error .= "<span class="error">Invalid Input. You must enter a NUMBER between 0 and 100</span>
"; } if ($entered_grade >=101 ) { $error .= "<span class="error">Invalid Input. The marks must be between 0 and 100.</span>
"; } return $error;}

Thanks

Your Answer:

Login to answer

Other forums

extract a file from zip file
hi,
i know how to unzip a zip file in php, but is there a way to just extract a certain file only

Stats of viewers
Hello. I have a website in php and people can login. I want to make an admin control panel where u c

Passing Arguments to execlp()
I'm writing a program that mimics a unix shell. It's supposed to take commands with arguments and ex

random generation
hi

i need help with generating this

numbers from 1-12

i want to generate in ran

Adding meta tags under Zend FW
Hello there, recently has come to my hands the FTP of a website which is running under Zend, I would

Call Screen statement Error
Dear Experts,

is there any setting that needs to be done before creating any dialog progr

How to replace search button with link?
hi to everbody.
i have a search submit form and button like this :

<form id="f

trim function issues
Hi guys, total noob here...

So I've been tinkering around with a html and am using php to em

storing video files into mysql in php
hi

i have my video files in my folder ,
i have to store the path of the videos into db an

Post, not working, please help
The error is:
Method Not Allowed
The requested method POST is not allowed for the URL /student