2 dimensional array search

[kjl-php]

I think an array is the best choice for this because I don't want to use a db but I could be wrong.

 

I've only done basics in PHP so this is th first time doing anything with arrays.

 

Here's what I have defined:

 

<?php

$my_array = array(

array(1,'somevalueA','somevalueB'),

array(2,'anothervalueA','anothervalueB')

);

?>

 

I want to search through the array for say 1 or 2 or 3 or 4 etc.

When it finds the 1 for example I would like to store the value somevalueB in a variable.

If I'm looking for 2 I will store anothervalueB in a variable, in essence I will always be looking for the last value (the B value)

 

I've seen a couple of functions but I couldn't figure out what to do.

Please tell me the code to use? Thanks in advance.

 

Keith

[Barand]

Instead of searching for the 1,2 etc, make them the keys

<?php

$my_array = array(
        1 => array('somevalueA','somevalueB'),
        2 => array('anothervalueA','anothervalueB')
);

    //
    //    now update b value for key 2
    //
$my_array[2][1] = "new_value";

?>

[kjl-php]

Thanks for the quick reply.

One more question if I can...

 

so in that small array all the values could be referenced this way:

 

$my_array[1][0] would equal somevalueA?

$my_array[1][1] would equal somevalueB?

$my_array[2][0] would equal anothervalueA?

$my_array[2][1] would equal anothervalueB?

 

Would that be how I would grab the values?

Thanks again...

 

[Barand]

That's it.

To get B value where key is 1

 

$b = $my_array[1][1];

[kjl-php]

Appreciate it....thanks a lot!

[kjl-php]

It just dawned on me...how would I handle the situation where the key doesn't exist?

 

The key value will be coming in from a querystring and I will be looking for the value in the b column but what will happen if the key doesn't exist?

[Barand]

you can check for that with

<?php
if (!isset($my_array[$key]))
{
        echo "Not found";
}

[kjl-php]

thanks again