CODEWITHSUNDEEP
phphtml
waa1990
waa1990

Reputation: 2413

Is there a way to find out POST variables without knowing their names?

I have a form that gets its names for checkboxes dynamically. Is there a way to find out the names of the unknown variables? For example:

 foreach($value as $option){
            $html .= "<input type='checkbox' name='".$key."[]' value='$option'>".htmlspecialchars($option)."</input>";
    }

I need to know what the _POST[''] would be.

Upvotes: 1

Views: 1526

Answers (5)

jondavidjohn
jondavidjohn

Reputation: 62412

Use the predefined variable $_POST and loop over : 

foreach($_POST as $key => $value)
{
    // $key will be the name
    // $value will be the value of $_POST[$key]
}

Upvotes: 6

jmacinnes
jmacinnes

Reputation: 1609

You can loop over the post and get fields dynamically:

foreach($_POST as $key=>$value) {
    echo "$key: $value\n";
}

You can do the same with $_GET.

Upvotes: 4

Simone
Simone

Reputation: 21272

There is also a function - get_defined_vars() - that returns an array with all defined variables. Try the code below

$arr = get_defined_vars();
echo "<pre>"; print_r($arr);

Upvotes: 0

Alex Turpin
Alex Turpin

Reputation: 47776

You can loop through the $_POST variable just like any other array

foreach($_POST as $key => $value)
    echo "$key is $value";

Upvotes: 2

Novakov
Novakov

Reputation: 3095

You can name your checkboxes 'checkbox[$key][]' and iterate over $_POST[$key] using foreach

Upvotes: 3

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