Check PHP array key for bidimensional arrays

Question

Can i use array_key_exists to check for a given key into a bidimensional array ? or there is a better way to check for ['payment']['id'] key ?

I try : array_key_exists('payment.id',$data) and array_key_exists('product.id',$data)

But can not see it working as expected.

Eg. array_key_exists(payment.id,$data), where i have an array :
array(
[payment] array( [id]=>123 [date]=>2016-01-20 ) 
[product] array( [id]=>456 [qtty]=>3 )
)

you can use isset(data['payment']['id'])

João Henriques
– João Henriques

2016-01-20 13:39:50 +00:00
Commented Jan 20, 2016 at 13:39 — João Henriques
– João Henriques, Commented Jan 20, 2016 at 13:39

SeanWM · Accepted Answer · 2016-01-20 13:37:05Z

3

Try this. Give this a read.

if (array_key_exists('id', $data['payment'])) {
    echo "The 'id' element is in the payment array.";
}
if (array_key_exists('id', $data['product'])) {
    echo "The 'id' element is in the product array.";
}

answered Jan 20, 2016 at 13:37

SeanWM

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3 Comments

Ângelo Rigo Over a year ago

Great work´s just fine, Thank you! i can access any level of an array dimension ?

SeanWM Over a year ago

You're welcome! Yep, you can access any level of the array as long as you're providing proper parameters to the array_key_exists function.

Ângelo Rigo Over a year ago

Yes! i check array_key_exists('id', $data[$key]['product'])) , and work´s fine!

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