ctype_alnum

thakladd/phplater

Supported Versions: PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8

Check for alphanumeric character(s)

<?php ctype_alnum(mixed $text): bool

<?php         if ($tag_constant === self::TAG_DELIMITER) {

            if (strlen($tag) > 1) {

                throw new RuleBrokenError('Preg delimiter can not be over 1 in length.');

            } else if (ctype_alnum($tag) || $tag === '\\') {

                throw new RuleBrokenError('Preg Delimiter can not be alphanumeric or backslash.');

            }

        }

src/PHPlaterBase.php