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

Other php-forum

Progress bar tracking file downloads
Hey guys, was wondering if there was a way to track how far a file has been downloaded. I know there

Need help with a mail notify function
I was tasked with setting up a site that's been prewritten. The site is basically a form that captur

HELP with mysql_real_escape_string
I'm looking to remove apostrophes completely when someone enters lyrics but don't have a clue how to

Check premium expire
Hi,

I am making a simple file hosting site and want to check if users premium subscriptions h

how to remove in php string display
My code is $message="We're looking at developing our website."; $body= "My mess

Date Question
I'm using the TIMESTAMP() function within mysql to set the date/time for certain events. However, ho

Check if another session of the page is running?
I want to keep people from opening multiple tabs, or sessions of my Facebook app. Is it possible to

Structure Question - One Table or One Table Per Record Set?
I have a web app (mySQL and PHP) which allows people to create an item with up to 200 records which

need help modifying script
Hi guys,

I'm fairly new to php and am having a bit of trouble modifying a script.

This

Undefined index on my form
ok im getting Undefined index on this line.. print_r($_REQUEST['form']);

below is the full sc