Question

I have a php array like this:

array(
[0] =>
array(
... 3 elements ... )

['cat'] =>
'FF'
...
['iPath'] =>
'http://www.xx.com/images'
...
['dispName'] =>
'Fast Food'
...
)
[1] =>
array(
... 3 elements ... )

['cat'] =>
'G&L'
...
['iPath'] =>
'http://www.xx.com/images'
...
['dispName'] =>
'Grocery & Liquor'
...
)
[2] =>
array(
... 3 elements ... )

['cat'] =>
'Gas'
...
['iPath'] =>
'http://www.xx.com/images'
...
['dispName'] =>
'Gas Stations'
...
) 
)

I want to be able to get the values for: iPath and dispName when cat = XXX. For instance, when cat = ‘G&L’.

thanks

ldj

Answer 1

A. I don’t understand anything from your example code.

B. To get array values in PHP you can use both numeric key values and string key values. Any of the following is valid:

$arr[1][7][0]
$arr['key1'][2]
$arr['42'][42]
$arr['keyLevel1']['keyLevel2']

Also note that $arr[42] will address the same element as $arr['42'].

C. Here’s some recommended reading: http://php.net/manual/en/language.types.array.php

---

A’. To find the keys for all the Gas values in the array.

function findGasInArray($arr){
    $results = Array();
    foreach($arr as $key => $val){
        if($val == 'Gas')
            $results[] = Array($key);
        if(is_array($val)){
            foreach(findGasInArray($val) as $otherVal){
                array_unshift($otherVal, $key);
                $results[] = $otherVal;
            }
        }
    }
    return $results;
}
findAllGasInArray($myBigArray);