how to select only the first 2 characters of a string in php code example

Example 1: php get first character of string

$firstStringCharacter = substr("hello", 0, 1);

Example 2: only display part of string php

substr('abcdef', 1);     // bcdef
substr('abcdef', 1, 3);  // bcd
substr('abcdef', 0, 8);  // abcdef
substr('abcdef', -1, 1); // f