- mb_strpos: documentation ( source)
- mb_detect_encoding: documentation ( source)
- mb_strlen: documentation ( source)
- print_r: documentation ( source)
<?php
$s="ó12345678\r\n1234\n;";
//$s=utf8_encode("ó12345678\r\n1234\n;")
print_r(mb_detect_encoding($s));
print_r(mb_strlen($s));
print_r(mb_strpos($s,';'));