Get inner array of multidimensional array

Question

I have the following array:

 Array (
                [0] => Array 
                (
                    [example] => 'h'
                )
                [1] => Array 
                (
                    [example] => 'e'
                ) 
                [2] => Array 
                (
                    [example] => 'l'
                )
                [3] => Array 
                (
                    [example] => 'p'
                )
        )

And I am wondering how can I change this array to look like this instead.

Array( [example] => 'h', [example] => 'e', [example] => 'l', [example] => 'p')

I have tried using a nested foreach loop but using that I only get the values and not as an array.

You can't change it to look the way you want, because that entails duplicate keys (example) — Mark Baker
– Mark Baker, Commented Jan 6, 2014 at 19:28
What do you want to have as keys? minimal reproducible example is obviously duplicated in your expected result and thus cannot be used as a key. Are the inner arrays num-indexed or do you need to preserve their keys as well? (@MarkBaker is comment-ninja) — Pavel S.
– Pavel S., Commented Jan 6, 2014 at 19:28
Well the thing is I do want to preserve their keys because I want to use it in an SQL statement, are you saying there is no way to convert it to how I would like it? — user3144542
– user3144542, Commented Jan 6, 2014 at 19:33
Not to how you like it, but something like Array ( [example] => Array( [0] => 'h', [1] => 'e', [2] => 'l', [3] => 'p') ) can be done. — Sam
– Sam, Commented Jan 6, 2014 at 19:34

Samuel Cook · Accepted Answer · 2014-01-06 19:31:53Z

2

There are a couple of ways to reach the values of a multidimensional array:

$array = array(
    0=>array('example'=>'h'),
    1=>array('example'=>'e'),
    2=>array('example'=>'l'),
    3=>array('example'=>'p')
);

1, If looping through the array:

foreach($array as $key=>$value){
    echo $value['example'];
}

2, Call a value directly:

echo $array[0]['example'];
echo $array[1]['example'];
echo $array[2]['example'];
echo $array[3]['example'];

It is impossible to create an array the way that you mentioned (having 4 'example' as keys). Take the following for example:

$array['example'] = 'h';
$array['example'] = 'e';
$array['example'] = 'l';
$array['example'] = 'p';
echo $array['example'];

The output would be p because you are simply overwriting the variable $array['example'] each time.

answered Jan 6, 2014 at 19:31

Samuel Cook

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1 Comment

user3144542 Over a year ago

Oh ok then, thank you I will have to rethink my code to get it the way I want it.

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