Remove subarray

[Jonob]

I have a multi-dimensional array. Lets assume its something like:

 

[0]
  [0] -> 'Green'
  [1] -> 'Soccer'
  [2] -> 'Oranges'
[1]
  [0] -> 'Blue'
  [1] -> 'Rugby'
  [2] -> 'Apples'

 

I want to remove the [2] index frome each sub-array, so that I land up with:

 

[0]
  [0] -> 'Green'
  [1] -> 'Soccer'
[1]
  [0] -> 'Blue'
  [1] -> 'Rugby'

 

I can do this easily by looping through ...but is there an easier/faster way?

[aebstract]

Easier/faster way than? Where's the code that you're questioning?

[JAY6390]

Not as far as I'm aware. Simplest way I can think of is a foreach

foreach($array as &$v) {
    unset($v[2]);
}

[Psycho]

Yes, there is a much easier method: array_diff_key()

 

Using your example above:

 

//Create an array with idexes of those to be removed
$arrayKeysToRemove = array('2' => '');

$newArray = array_diff_key($originalArray, $arrayKeysToRemove);

 

[teamatomic]

array_diff_key wont work like that. You would need to build an array exactly the opposite of what you want then diff it against the original array. ie

array(

array(2=>'')

array(2=>'')

etc for each sub array

 

The fastest and easiest way is the foreach you have been previously shown.

 

 

HTH

Teamatomic