[thelist] PHP: Associative Arrays

[Michael Mell]

if (isset($people['Joe'])) {
    // you know Joe exists
}
http://www.php.net/manual/en/function.isset.php

if (array_key_exists($people, 'Joe') {
   // you know Joe exists
}
http://www.php.net/manual/en/function.array-key-exists.php


as for the one before and the one after, etc.
see array_keys() http://www.php.net/manual/en/function.array-keys.php
and range() http://www.php.net/manual/en/function.range.php
and foreach http://www.php.net/manual/en/control-structures.foreach.php

m


Donald Noble wrote:

> Hi evolters,
>
> If I have an array set up as follows:
>
> $people = array(
>         "Joe" => array ( "sname" => "Blogs", "age" => "32", "hates" =>
> "bananas"),
>         "Mick" => array ( "sname" => "Mouse", "age" => "4", "hates" =>
> "cats"),
>         "Dave" => array ( "sname" => "Brown", "age" => "22", "hates" =>
> "me")
> );
>
> how (if possible) can I check if there is an entry for Joe? ie I would
> like to use something similar to if(in_array("Joe"),$people)...
>
> the other question I have is, is there any way to easily get the
> previous and next entries in such an array?
>
> Cheers :Donald
>
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