How does this code work?

[Raistlin Majere]

// Please, tell me in details.

function sortArrayByField
(
$original,
$field,
$descending = false
)
{
$sortArr = array();

foreach ( $original as $key =$value )
{
$sortArr[ $key ] = $value[ $field ];
}

if ( $descending )
{
arsort( $sortArr );
}
else
{
asort( $sortArr );
}

$resultArr = array();
foreach ( $sortArr as $key =$value )
{
$resultArr[ $key ] = $original[ $key ];
}

return $resultArr;
}

[Michael Fesser]

..oO(Raistlin Majere)

>// Please, tell me in details.

It works good. SCNR

Any particular problems in understanding the code? The used statements
and functions are pretty straightforward. Basic PHP, nothing special.
So where are your difficulties?

Micha