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PHP Sticky Forms help

Greenhorn

Posts: 13

posted 10 years ago

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I'm writing a php form and I can't get the drop down boxes and check boxes to stick as in when I fill in my details but don't click something it will keep everything else filled but that one part that wasn't filled out. I can do it for the input text and radio buttons but I can't get it done for drop downs and checkboxes

<!DOCTYPE html>
<style>
@import url(stickyTextInput.css);
</style>
<?php

if(isset($_REQUEST["left"]))
{
    process_form();
}
else
{
    display_form_page('');
}
?>

<?php

function display_form_page($error)
{
    $self =$_SERVER['PHP_SELF'];    
    $first_name = isset($_REQUEST['name']) ? $_REQUEST['name']:'';
    $last_name = isset($_REQUEST['lastname']) ? $_REQUEST['lastname']:'';
    $age = isset($_REQUEST['age']) ? $_REQUEST['age']:'';
    $gender = isset($_REQUEST['gender']) ? $_REQUEST['gender']:'';
    $color = isset($_REQUEST['color']) ? $_REQUEST['color']: '';
    $food = isset($_REQUEST['food']) ? $_REQUEST['food']:'';
?>
<html>
<head>
<title>
Forms Sticky input
</title>
<style>
@import url(stickyTextInput.css);
</style>
<style type="text/css"> 
.error
{
color:#ff0000
}
</style>
</head>
<body>
<?php
if($error)
{
    echo "<p>$error</p>\n";
}
?>
<form action= "<?php  echo $self?>" method = "post">
<h1>Forms-Sticky Input</h1>
<label>First Name:</label>
<input type="text" size="10" maxlength="40" name="name" value = "<?php echo $first_name?>">
<br>

<label>Gender</label>
<input type="radio" name="gender" value="male" <?php check($gender, "male")?>>Male
<input type="radio" name="gender" value="female" <?php check ($gender, "female")?>>Female
<br>

<label>Select favourite Colour</label>
<select name= "color">
    <option <?php checkradio($color, "Red")?>>Red
    <option <?php checkradio($color, "Blue")?>>Blue
    <option <?php checkradio($color, "Green")?>>Green
    <option <?php checkradio($color, "Pink")?>>Pink
    <option selected="selected" disabled="disabled">
</select>
<br>

<label>Food</label>
<input type="checkbox" name="food[]" value="beans" <?php checkbox ($food, "beans")?>>Beans
<input type="checkbox" name="food[]" value="crisps" <?php checkbox ($food, "crisps")?>>Crisps
<input type="checkbox" name="food[]" value="lemons" <?php checkbox ($food, "lemons")?>>Lemons
<br>

</form>
</body>
</html>
<?php
}
?>

<?php
// If $group has the value $val then select this list item
function check($group, $val)
{
if ($group === $val)
{
   echo 'checked = "checked"';
}
}
?>
<?php
function checkradio($group, $val)
{
if ($group === $val)
{
  echo 'selected = "selected"';
}
}
?>

<?php
// If $group has the value $val then select this list item
function checkbox($group, $val)
{
if ($group === $val)
{
  echo 'checked = "checked"';
}
}
?>

<?php
function process_form()
{
    $error = validate_form();
    if($error)
    {
        display_form_page($error);
    }
    else
    {
        display_output_page();
    }
}
?>
<?php
    function validate_form()
    {
        $first_name = trim($_REQUEST['name']);
        $last_name = trim($_REQUEST['lastname']);
        $age = trim($_REQUEST['age']);

$reg_exp = '/^[a-zA-Z\-\']+$/';
        $reg_exp1 = '[0-9]{3}';

if(!preg_match($reg_exp, $first_name))
        {
            $error .= "<span class=\"error\">First Name is invalid (letters, hyphens, ', only)</span><br>";
        }

if (!preg_match($reg_exp, $last_name))
        {
            $error .= "<span class=\"error\">Last Name is invalid (letters, hyphens, ', only)</span><br>";
        }

if (!is_numeric($age))
        {
            $error .= "<span class=\"error\">Age is invalid (numbers only)</span><br>";
        }

if (strlen($gender) == 0)
        {
            $error .= "<span class=\"error\">Select Male/Female</span><br>";
        }

if (strlen($color) == 0)
        {
            $error .= "<span class=\"error\">Select one color</span><br>";
        }

if (! is_array($food))
        {
            $error .= "<span class=\"error\">You must select one      food</span><br>";
        }

return $error; 
}   
?>

<?php
function display_output_page()
{
$first_name = trim($_REQUEST['name']);
$last_name = trim($_REQUEST['lastname']);
$age = trim($_REQUEST['age']);

$gender = isset($_REQUEST['gender']) ? $_REQUEST['gender']:'';
$color = isset($_REQUEST['color']) ? $_REQUEST['color']:'';
$food = isset($_REQUEST['food']) ? $_REQUEST['food']:'';
?>
<html>
<head><title>Form Results</title></head>
<body>
<h1>Form Results</h1>
<?php 
echo " First Name: $first_name<br/>\n";
echo " Last Name: $last_name<br/>\n";
echo " Age: $age<br/>\n";
echo " Gender: $gender<br/>\n";
echo " Favourite Color: $color<br/>\n";
echo "<ul>";
if (is_array($food))
{
    echo "Favourite Food is:";
    foreach($food as $selection)
    {
        echo "<li>$selection</li>";
    }
}
echo "</ul>";
?>
</body>
</html>
<?php
}
?>