get first key of array php
$firstKey = array_key_first($array);get first key of array php
$firstKey = array_key_first($array);php array get first x elements
$sliced_array = array_slice($array, 0, 5)php get first digit of number
// in case the number is a string
$s = '123';
$a = $s[0];
echo $a; // 1
// in case the number is an integer
// Possibility 1
$k = 123;
$s = $k.''; // or: $s = (string)$k;
$a = $s[0];
echo $a; // 1
// Possibility 2
$k = 123;
$a = floor($k/100);
echo $a; // 1
// Possibility 3
$k = 123;
$a = substr($k, 0, 1);
echo $a; // 1Copyright © 2021 Codeinu
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