get the first 4 caracter string php code example

Example 1: 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

Example 2: print only some characters of a string in php

substr(string,start,length)