Re: difference between indexed and associative arrays?

El 05/04/17 a les 10:31, Jigar Dhulla ha escrit: > On Wed, Apr 5, 2017 at 1:37 PM, Narcis Garcia <informatica@actiu.net> wrote: > >> As I understand, an associative array is exactly same as indexed array >> but with an additional "property": the key. >> >> >> El 04/04/17 a les 23:54, Jeffry Killen ha escrit: >>> Is there a function that will produce the difference between indexed and >>> associative arrays, without actually testing for string or integer >> indices? >>> >>> (Although I realize that arrays can be mixed string and integer indeces.) >>> >>> Thank you for time and attention. >>> JK >>> >> >> -- >> PHP General Mailing List (http://www.php.net/) >> To unsubscribe, visit: http://www.php.net/unsub.php >> >> > ​Indexed array has key property too, difference is that key are always > indexed (as name suggest).​ > > Also, > > $a = [2 => 'foo', 4 => 'bar', 6 => 'baz']; > $a[] = 'foo1'; > $a[] = 'bar1'; > var_dump($a); > > ​Here keys(2 and 4) stays as is and keys(1 & 3) will be skipped.​ And next > key will largest key value + 1. > > Output: > > array(5) { > [2] => > string(3) "foo" > [4] => > string(3) "bar" > [6] => > string(3) "baz" > [7] => > string(4) "foo1" > [8] => > string(4) "bar1" > } > > Then the logic is inverse: "an indexed array is exactly same as associative array but with only numeric keys"