Get the array subscript, how to solve

Get array subscript
Recently want to learn PHP programming development, inadvertently saw a problem on the Internet


$array [' Color ']?=? ' Red '; Gets the subscript of the first element of the array $array

Can the great gods give an example? Programming PHP

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------Solution--------------------
What is the subscript? Key Name?

foreach ($array as $key = = $each) {
Echo $key;
Break
}

Displays the key name of the first element
------Solution--------------------

$keys =array_keys ($array);
Echo current ($keys);

------Solution--------------------

$array [' color '] = ' red ';
echo Key ($array); Color

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