How can I check if an array contains a specific key in php

Question

I know how to check for a value in an array, but how do I check for a value in an Array Iterator?

$array = new ArrayIterator(array(
'1QmRjtsw2UQ' => array('pubdate' => '26 Jun 15', 'alt' => '8 Year Old Beautifully Covers Thinking Out Loud', 'anchor text' => '8-yo \'Thinking Out Loud\''),
'eKqLaYrcf3A' => array('pubdate' => '25 Jun 15', 'alt' => 'Plane Lands On Truck', 'anchor text' => 'Plane Lands On Truck'),
));

I'm trying to check for the values such as 1QmRjtsw2UQ.

This does not work:

if(in_array('1QmRjtsw2UQ', $array));

because you've created an arrayiterator, you've actually got an object which has methods and properties. what you need to do is a loop over the elements and make a comparison against the returned values. — Ohgodwhy, Jul 06 '15 at 04:42

score 6 · Answer 1 · answered Jul 06 '15 at 05:30

6

why don't you use array_key_exists ?

if(array_key_exists('1QmRjtsw2UQ', $array)) 
{
  // do something
}

answered Jul 06 '15 at 05:30

Akshay Hegde

16,536
2
22
36

1

This works and makes more sense than using `$array->offsetExists('1QmRjtsw2UQ');` – Mike Jul 06 '15 at 05:45

score 0 · Answer 2 · answered Jul 06 '15 at 05:19

0

Try this,

$array->offsetExists('1QmRjtsw2UQ');

answered Jul 06 '15 at 05:19

GAMITG

3,810
7
32
51

How can I check if an array contains a specific key in php

2 Answers2