php String iteration does not detect Π symbol

Question

I have string in PHP "S*+%2YKΠ3)3Π+)+Θ" that I want to iterate.

my code :

$string = "S*+%2YKΠ3)3Π+)+Θ";
$charLength = mb_strlen($string);
for($i = 0 ; $i < $charLength ; $i++) {
    $char = mb_substr($string, $i , 1);
    if($char == 'Π') {
       echo "this is my Π character";
    }
}

But I never entering the echo statement to get "this is my Π character",

Anyone to help me with this problem, please ... I already looking for others answer like:

How to convert any character encoding to UTF8 on PHP

Convert utf8-characters to iso-88591 and back in PHP

PHP: Convert any string to UTF-8 without knowing the original character set, or at least try

How to convert a string to utf-8 code in php

but never work for my case. Thank you

score 0 · Accepted Answer · answered Jan 20 '15 at 09:18

The code as such is fine, however there are a number of possible pitfalls:

You need to tell the mb functions what encoding they're supposed to work on. Either pass the encoding to each one individually (e.g. mb_strlen($string, 'UTF-8')), or set the encoding once for all using mb_internal_encoding.
Your .php source code file must be saved in UTF-8 if you want your string literals to be UTF-8 encoded. Check in your text editor of choice that you're actually saving the file encoded as UTF-8 (no BOM).

Thanks! i added mb_substr($string, $i , 1, 'UTF-8') and worked well! — muyassar, Jan 20 '15 at 09:28

php String iteration does not detect Π symbol

1 Answers1