CODEWITHSUNDEEP
phparraysvalidationmultidimensional-array
Anon
Anon

Reputation: 865

Determine if a 2d array containing a single row contains a specified column value

I have an array which is given below:

array(1) {
    [0]=> array(1) {
        ["type"]=> string(4) "item"
    }
}

I'm using to the following code in an if statement to see if "item" exists in the array but it isn't been evaluated as true

if (array_key_exists('item', $_SESSION['type'])) 
{
    //do something
}

What am I doing wrong?

Upvotes: 0

Views: 3573

Answers (3)

Legionar
Legionar

Reputation: 7597

Its array in array. And function array_key_exists checks only one level deep, if the key exists. And your ked is 2 levels deep, so it cant return true, because there is key only "0".

And "item" is not key, but value; you have to use function in_array or array_search.

And also you should create your own function for that, because its array in array...

Upvotes: 2

aaron
aaron

Reputation: 687

You need to use in_array to find if an element exists in an array.

array_key_exists checks if the key of the array is present or not

Upvotes: 1

Jon
Jon

Reputation: 437366

array_key_exists checks the keys of the array, not the values; "item" is a value.

To check for the existence of values use either in_array (if you don't care about the key in case the item is found) or array_search (if you want to know what the key for that item was). For example:

if (in_array("item", $_SESSION['type'])) // do something

Upvotes: 3

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