php: how to get associative array key from numeric index?

Question

If I have:

$array = array( \'one\' =>\'value\', \'two\' => \'value2\' );

how do I get the string one back from $ar

Answer 1

Or if you need it in a loop

foreach ($array as $key => $value)
{
    echo $key . ':' . $value . "\n";
}
//Result: 
//one:value
//two:value2