substr()
function
Returns part of a string, starting at offset for the given length. Negative offset counts from the end.
Syntax
substr(string $string, int $offset, ?int $length = null): string
Example
php
<?php
$str = 'Hello World';
echo substr($str, 6); // 'World'
echo substr($str, 6, 3); // 'Wor'
echo substr($str, -5); // 'World'
function truncate(string $s, int $n): string {
return strlen($s) > $n ? substr($s, 0, $n).'...' : $s;
}