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Old 05-09-2006, 01:47 AM
lightnb lightnb is offline
 
Join Date: Dec 2005
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Here's a simpler version, that's still giving me the unexpected $ on the last line error:

PHP Code:
<?php

// function to output form and hold previously entered values.

function user_form() {
    
    
//output the form HTML.
    
echo '<p>Please fill in at least two fields.</p>';
    echo 
'<form action="'.htmlspecialchars($_SERVER['PHP_SELF']).'" method="post">';
    echo 
'<table border="0" cellspacing="4" cellpadding="0">';
    echo 
'<tr><td>Vertical Distance:</td><td><input type="text" name="VD" value="'.htmlspecialchars($_POST['VD']).'"></td></tr>';
    echo 
'<tr><td>Horizontal Distance:</td><td><input type="text" name="HD" value="'.htmlspecialchars($_POST['HD']).'"></td></tr>';
    echo 
'<tr><td>Throw Distance:</td><td><input type="text" name="TD" value="'.htmlspecialchars($_POST['TD']).'"></td></tr>';
    echo 
'<tr><td colspan="2"><input type="submit" value="Add to Database" name="submit"></td></tr>';
    echo 
'</table>';
    echo 
'</form>';

}

// has the form been submitted?
if (isset($_POST['submit'])) {
    
// the form has been submitted
    // perform data checks.
   
   
$error_str ''// initialise $error_str as empty
    
if( isset($_POST['VD'])) { if(!is_numeric($_POST['VD'])){$error_str .= '<li>VD must be a number</li>'; }
if( isset(
$_POST['HD']) ) { if( !is_numeric($_POST['HD'])){$error_str .= '<li>HD must be a number</li>'; }
if( isset(
$_POST['TD']) ) { if( !is_numeric($_POST['TD'])){$error_str .= '<li>TD must be a number</li>'; }

    
// now, have any of these errors happened? We can find out by checking if $error_str is empty
    
if (!empty($error_str)) {
        
// errors have occured, halt execution and show form again.
        
echo '<p>There were errors in the information you entered, they are listed below:</p>';
        echo 
'<ul>'.$error_str.'</ul>';
        
// show form again
        
user_form();
        exit; 
// die
    
}else{echo'Success!!';}
    
// if we get here, all data checks were okay, process information as you wish.
} else {
    
// the form has not been submitted, let's show it
    
user_form();
}


?>
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