[Resolved] form validation with php

[natman3]

I am trying to write a function that will check for validation on a form i am not sure i have the function or the code writen correctly. As it does not work. Does anyone have an idea how i can do this with php. I am checking to see if the user checks the box before allowing him to go to the next page bellow is the code thanks for your help

this is on the page that contains the form

$update_profile->validate($t1, $t2);
	if(validate == false)
	{
		echo "Please select type";
	}
	else
	{
		if($t1 != "")
		{
			echo $t1;
			$_SESSION['divisionType'] = $_SESSION['coll'];
			header("Location: "."register.php");
		}
		else
		{
			echo $t2;
			$_SESSION['divisionType'] = $_SESSION['high'];
			header("Location: "."register.php");
		}
	}

<form name="form1" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
				<table width="150" border="0" cellpadding="0" cellspacing="0" class="box" align="center">
				<tr bgcolor="#CCCCCC"> 
				  <td>Collegiate Coach:</td>
				  <td align="center"> <input type="radio" name="collegiate" value="collegiate"></td>
				</tr>
				<tr>
				  <td>High School Coach:</td>
				  <td align="center"><input type="radio" name="highschool" value="highschool"></td>
				</tr>
				<tr> 
				  <td>&nbsp;</td>
				  <td>&nbsp;</td>
				</tr>
				<tr> 
				  <td colspan="2" align="center"><input type="submit" name="Submit" value="Next -->"></td>
				</tr>
	  	  </table>					
		  </form>

the funciton

function validate($t1, $t2s)
	{
		if($t1 == NULL && $t2 == NULL)
		{
		return false;
		}
		else 
		return true;
	}

[planetsim]

Firstly as there is only one option for the radio input fields you really should use checkboxes.
Secondly to see if a checkbox or radio field is checked you need to check if it has been sent through from the form.

Radio and Checkbox fields wont post data back and wont exist when your checking so.

if (isset($_POST['radiofield']))
{
    // the radio field was checked, same for checkbox however radio fields are meant to be used with two or more options were there can only be one option checked. checkboxes are used mainly for yes or null response null being not checked.
}

[dgrinberg]

Have you looked at any form building classes or scripts?

I have used the PEAR package HTML_QuickForm quite extensively and found it really easy to use. Especially when doing such validation as mandatory fields.

The PEAR::HTML_QuickForm package provides methods for creating, validating, processing HTML forms.

It automatically handles the validation, and you can set it to validate before or after the user submits the form (javascript or PHP)