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$colors = array(2=>"blue",3 =>"green",1=>"red");
$firstValue = reset($colors); //blue
$firstKey = key($colors); //2
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<?php
$stack = array("orange", "banana", "apple", "raspberry");
$fruit = array_shift($stack); //Remove "orange" from array and return it
print_r($stack);
/** OUTPUT:
Array
(
[0] => banana
[1] => apple
[2] => raspberry
)
*/
?>
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For PHP version 7 and above
$array = array(
"1" => "PHP code tester Sandbox Online",
"foo" => "bar",
"case" => "Random Stuff: " . rand(100,999),
"PHP Version" => phpversion()
);
$firstValue = reset($colors); // PHP code tester Sandbox Online
$firstKey = key($colors); // 1