Re: difference between indexed and associative arrays?

> On Apr 4, 2017, at 3:09 PM, Kevin Waterson <kevin.waterson@gmail.com> wrote: > > <?php > $a1 = array( 'one'=>'koala', > 'two'=>'dingo', 'three'=>'kangaroo', > 'four'=>'kookaburra', 'sixty'=>'wallaby' ); > $a2= array( 'koala', 'gecko', 'bilbi', > 'crocodile', 'wallaby' ); > > $diff = array_diff( $a1, $a2 ); > > print_r( $diff ); > > > On Wed, Apr 5, 2017 at 7:54 AM, Jeffry Killen <jekillen@prodigy.net> wrote: > >> 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 >> >> To answer the replies, And associative array would be looped with foreach and an indexed array would be looped through with for and an iterator. from examples above: $a1 is an associative array so it would be looped through with foreach and $a2 is an indexed array so it would be looped through with a for loop with an integer iterator. So, I want to know before hand what type of loop to use on an unanticipated array type. This example I am assuming could be valid, where $a3[0] == 'one'; and $a3[3] == 'four': $a3 = array('one', 'two'=>'two', 'three'=>'three', 'four'); Thanks again for time and attention JK