Sorting a multidimensional array while maintaining row order

jaymoore_299 · May 17, 2010

Suppose I have an array such as the following
$data[0] = array(1, c,);
$data[1] = array(3, b);
$data[2] = array(2, a);

I want to be able to sort $data array by the second dimension so that it would end up looking like this

$data[0] = array(2, a);
$data[1] = array(3, b);
$data[2] = array(1, c);

NogDog · May 17, 2010

One way:

usort(
   $data,
   create_function(
      '$a,$b',
      'return strcmp($a[1], $b[1]);'
   )
);