Php > Miscellaneous

Make select menu that remembers users choice

Make select menu that remembers users choice

<?php 

function makeSelectMenu($menuName, $options, $chosen) { 
    $list = ''; 
    foreach ($options as $option => $text) { 
        $selected = ($chosen == $option) ? ' selected="selected"' : ''; 
        $list .= " <option value=\"$option\"$selected>$text</option>\n"; 
    } 
    return "\n<select name=\"$menuName\" id=\"$menuName\">\n$list</select>\n"; 
} 


// example usage 

session_start(); 


// here we define the option names, and the corresponding text to be displayed for that option 
// for example <option value="red">I like Red</option> 
$options = array( 
    'red' => 'I like Red', 
    'blue' => 'I like Blue', 
    'green' => 'I like Green' 
  ); 

// this will be the <select name="favoriteColor" value in the html select list 
$menuName = 'favoriteColor'; 



// if they submitted the form, lets assign thier selection to the session 
if (isSet($_POST[$menuName])) { 
    $_SESSION[$menuName] = $_POST[$menuName]; 
} 




// $chosen will obviously be filled with the users choice 
if (isSet($_SESSION[$menuName])) { 
    $chosen = $_SESSION[$menuName]; 
} else { 
    $chosen = ''; 
} 


$selectMenu = makeSelectMenu($menuName, $options, $chosen); 



/* 
this above example will output the following: 

<select name="favoriteColor" id="favoriteColor"> 
<option value="red">I like Red</option> 
<option value="blue">I like Blue</option> 
<option value="green">I like Green</option> 
</select> 

and if the user selects "green", this would be the output 

<select name="favoriteColor" id="favoriteColor"> 
<option value="red">I like Red</option> 
<option value="blue">I like Blue</option> 
<option value="green" selected="selected">I like Green</option> 
</select> 



HERES HOW SMALL THE CODE IS w/out comments: 

$options = array( 
    '' => 'Choose Your Favorite Color', 
    'red' => 'I like Red', 
    'blue' => 'I like Blue', 
    'green' => 'I like Green' 
  ); 
$menuName = 'favoriteColor'; 
$chosen = ''; 
if (isSet($_POST[$menuName])) $_SESSION[$menuName] = $_POST[$menuName]; 
if (isSet($_SESSION[$menuName])) $chosen = $_SESSION[$menuName]; 
$selectMenu = makeSelectMenu($menuName, $options, $chosen); 




*/ 

?> 
<html> 
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>"> 

<?php echo $selectMenu; ?> 
<input type="submit" /> 
</form> 


</html>