Re: [PHP] difference between indexed and associative arrays?
- Date: Tue, 4 Apr 2017 16:23:22 -0700
- From: Jeffry Killen <jekillen@xxxxxxxxxxx>
- Subject: Re: [PHP] difference between indexed and associative arrays?
> On Apr 4, 2017, at 3:09 PM, Kevin Waterson <kevin.waterson@xxxxxxxxx> wrote:
> $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@xxxxxxxxxxx> 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.
>> 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
$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
This example I am assuming could be valid, where $a3 == 'one';
and $a3 == 'four':
$a3 = array('one', 'two'=>'two', 'three'=>'three', 'four');
Thanks again for time and attention
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