Question

i have an array like:

Array([0]=>array('field1'=>aNumber,'field2'=>'something'),
[1]=>array('field1'=>aNumber,'field2'=>'something'),
[2]=>array('field1'=>aNumber,'field2'=>'something'),
[3]=>array('field1'=>aNumber,'field2'=>'something'));

I have to get the index of array that has min the field aNumber..

For example:

Array([0]=>array('field1'=>10,'field2'=>'something'),
[1]=>array('field1'=>3,'field2'=>'something'),
[2]=>array('field1'=>100,'field2'=>'something'),
[3]=>array('field1'=>9,'field2'=>'something'));

the index i want is 1.

I know is possible using a loop and some if storing the iterate index.. but i want to know if there is some php function that shortens the algorithm
how can i do? thanks!!!

Answer 1

As I know there is no built-in function like this.
But you can use other functions with callbacks ..
array_walk, array_filter

(And a built-in function will probably do same as you will do with a loop and iterate through the items of your array)