Comparing array values of just 1 array - php

Question

Here is my array:
Array
(
[0] => Array
(
[0] => Array
(
[0] => West
[1] => 4
)
[1] => Array
(
[0] => South west
[1] => 20
)
)
)
What I want to achieve is be able to compare $array[0][0][1] and $array[0][1][1]. So whichever is lesser comes first and I get the value. So in this case I know that 4 is lesser so I get West first then South west is next. It should be dynamic since we can get more than 2.

Answer 1

This a simple example you can use :
$arr = array(
array("name"=>"Bob","age"=>8,"colour"=>"red"),
array("name"=>"Greg","age"=>12,"colour"=>"blue"),
array("name"=>"Andy","age"=>5,"colour"=>"purple"));
$sortArray = array();
foreach($arr as $val){
foreach($val as $key=>$value){
if(!isset($sortArray[$key])){
$sortArray[$key] = array();
}
$sortArray[$key][] = $value;
}
}
$orderby = "age"; //change this to whatever key you want from the array
array_multisort($sortArray[$orderby],SORT_ASC,$arr);
print_r($arr);

Answer 2

Assuming the depth of the array structure remains the same, and you only want the very lowest, you can use a simple foreach.
function findLowestName($array) {
$lowest = 0; // variable to hold the index of the lowest entry.
// go through every entry in the first array member
foreach($array[0] as $key => $value) {
// if this entry is lower than the 'current' lowest, mark this as the new lowest
if($value[1] < $array[0][$lowest]) {
$lowest = $key;
}
}
return $array[0][$lowest][0];
}
Built as a function, so you can include it, and call the function, passing it the array as a parameter.