check arrays

[esport]

Hi Guys,

I am posting a form that consists of an array.

 

<select name="model[]" class='forminput' id="model">

 

I am trying to do some form validation to check if the user has selected from the drop list. Since the POST value is returned as an array, if there is no value selected, it still picks up a value.

 

How do I determine if the array is empty? I have tried to use the empty function but no luck.

 

Thanks in advance.

 

Daniel

[vikramjeet.singla]

you can have check this by isset and count like this:

 

$arr = array();
if(isset($arr) && count($arr) > 0){
// put your logic here
}

[sKunKbad]

So if in your form you have selected="selected" set to a null value or placeholder, when the form is processed, you will redirect the user back to the form if the null value or placeholder was posted because it is not in the array of acceptable values. For instance, consider that the value of $model = null:

 

$model_possibilities = array("1","2","3","4","5","6-10","11-15","16+","dont_know");
if(in_array("{$_POST['model']}", $model_possibilities)){
$model = $_POST['model'];
}else{
        //redirect back to the form...
}