Array of select values

Question

So basically, I have an array of Modules and I want to have a drop-down menue that users can then select what grade they got. This works fine, however, I would like the results to be stored inside of an array, to however many values they selected. So for example:

If someone selected "40" in Mod1 and in Mod2 they selected "20" then the array would be like this:

mod1=>40

mod2=>20

...

Here is the code so far, it's probably something stupid, I just cannot get my head around it.

<?php

$modules = array('Mod1', 'Mod2', 'Mod3');   

if(!isset($_POST['submitted']))
{
    echo '<form method="post">';

    echo 'Please enter the grades you got for each Module: <br />';
    foreach($modules as $module)
    {
        echo $module . ': <input type="text" name="grades[]" value=""> <br />';
    }
    echo '<br /><input type="submit" name="submit" value="Go!">';
    echo '<input type="hidden" name="submitted" value="TRUE">';

}else{

    $input = $_POST['score[]'];
    foreach($modules as $i => $module){
        $input[$module] = $input[$i];
        var_dump($input[$module] = $i);
        //unset($input[$i]);
    }
    //var_dump($input);

}

?>

do not put tags in subject meta.stackexchange.com/questions/19190/… — Marcin Orlowski
– Marcin Orlowski, Commented Nov 22, 2012 at 16:56

Samuel Herzog · Accepted Answer · 2012-11-22 16:56:03Z

2

<select name="score[<?php echo $module; ?>]">

should get you going :)
the array will look exactly like you narrowed it down in the intro.

answered Nov 22, 2012 at 16:56

Samuel Herzog

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Comments

score 1 · Accepted Answer · 2012-11-22 17:32:06Z

1

You could use a name that groups the values of the selects in POST into one array:

echo '<select name="score[]">';

You can then use:

$input = $_POST['score[]'];
foreach($modules as $i=>$module){
    $input[$module] = $input[$i];
    unset($input[$i]);
}
var_dump($input);

edited Nov 22, 2012 at 17:32

answered Nov 22, 2012 at 17:00

user1726343

8 Comments

Phorce Over a year ago

Thank you. But this shows as "array(3) { [0]=> string(2) "90" [1]=> string(2) "12" [2]=> string(2) "23" }" whereas I want it to be... [Mod1]=> string(2) "90" etc.. How would I do that? Do I need to map the array?

Phorce Over a year ago

Thanks, but this puts the array now as: "array(3) { ["Mod1"]=> NULL ["Mod2"]=> NULL ["Mod3"]=> NULL }" I don't know why it's giving NULL

user1726343 Over a year ago

@Phorce What happens when you try it without the unset?

user1726343 Over a year ago

@Phorce Strange. Try this and tell me what the output is: $input[$module] = $i;

Phorce Over a year ago

I get "int(0) int(1) int(2)" I have updated my code in my original post

|

Samuel Cook · Accepted Answer · 2012-11-22 16:56:11Z

1

just change your name attribute to an array:

echo '<select name="score[]">';

the the $_POST variable will be in an array

answered Nov 22, 2012 at 16:56

Samuel Cook

16.9k7 gold badges56 silver badges65 bronze badges

2 Comments

Phorce Over a year ago

Thanks :) It worked! I knew it was something silly. Could you tell me also, why it only shows "Mod1", "Mod3" from my array.. "Mod2" seems to have just disappeared.

Samuel Cook Over a year ago

it appears that you don't have a closing </select>

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