Yep, array keys are case sensitive.
So you can do:
< ?php
$a = array('key'=> 1, 'Key' => 2);
print_r($a);
?>and it will print
Array ( [key] => 1 [Key] => 2 )
Similarly if you call array_keys() on $a, like:
< ?php
$a = array('key'=> 1, 'Key' => 2);
print_r(array_keys($a));
?>...you'll get:
Array ( [0] => key [1] => Key )
Defining the same key in an array (even in the same array declaration) won't cause an error, but will result in the latest value taking precedence. Like:
< ?php
$a = array('key'=> 1, 'key' => 2);
print_r($a);
?>will output:
Array ( [key] => 2 )
