NYCPHP Meetup

[Kenneth Downs]

Michael B Allen wrote:
> I seem to recall getting a warning trying to access array elements
> that did not exist but I can't seem to trigger that issue right now.
>
> The following code:
>
>   <?php
>   $a = array('a' => 'b');
>   $result = $a['c'];
>   var_dump($result);
>
> yields the following:
>
>   $ php -f t.php
>  

Michael, I found the following routine to be very useful dealing with 
arrays:

function a(&$array, $key,$default='') {
  if (isset($array[$key])) return $array[$key];
  else return $default;
}

This allows you to code up simpler unconditional routines with code like:

$value = a($myArray,$key,'AccetableDefault');


>  NULL
>
> Is it ok to access non-existent array elements?
>
> Will accessing an array element using a key that does not exist always
> return NULL?
>
> Mike
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-- 
Kenneth Downs
Secure Data Software, Inc.
www.secdat.com    www.andromeda-project.org
631-689-7200   Fax: 631-689-0527
cell: 631-379-0010