Get unique value of one attribute from array of associative arrays

Question

I have an array like this:

$a = array(
    0 => array(\'type\' => \'bar\', \'image\' => \'a.jpg\'),
    1 => array(\'type\' => \'food\', \'ima         


        

Answer 1

Using PHP >= 5.5, you could do:

$ar = array_unique(array_column($a, 'type'));

print_r($ar):

Array ( 
    [0] => bar 
    [1] => food 
    [3] => default 
)

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http://php.net/manual/en/function.array-column.php

http://php.net/manual/en/function.array-unique.php