$firstKey = array_key_first($array);
array_values($array)[0];
$colors = array(2=>"blue",3 =>"green",1=>"red");
$firstValue = reset($colors); //blue
$firstKey = key($colors); //2
<?php
$stack = array("orange", "banana", "apple", "raspberry");
$fruit = array_shift($stack); //Remove "orange" from array and return it
print_r($stack);
/** OUTPUT:
Array
(
[0] => banana
[1] => apple
[2] => raspberry
)
*/
?>
array_shift(array_values($array));
reset($array);
$firstKey=array_keys($arr)[0];
array_pop(array_reverse($array));
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