mb extends

Functions

• utf8_count_chars()
• utf8_ltrim()
• utf8_rtrim()
• utf8_str_pad()
• utf8_substr_replace()
• utf8_trim()
• utf8_ucfirst()
• utf8_ucwords()
• utf8_wordwrap()

Unused

<?php

function utf8_strtr($str, $from, $to)
{
    $keys    = [];
    $values    = [];

    if (!is_array($from))
    {
        preg_match_all('/./u', $from, $keys);
        preg_match_all('/./u', $to, $values);
        $mapping = array_combine($keys[0], $values[0]);
    }
    else
    {
        $mapping = $from;
    }

    return strtr($str, $mapping);
}

function mb_strtr($str, $from, $to ,$chars = 'undefined')
{
    $chars = mb_internal_encoding();
    $_str = '';
    $len = mb_strlen($str, $chars);

    for($i = 0; $i < $len; $i++)
    {
        $flag = false;

        for ($q = 0, $sf = mb_strlen($from, $chars), $st = mb_strlen($to, $chars); $q < $sf && $q < $st; $q++)
        {
            if (mb_substr($str, $i, 1, $chars) == mb_substr($from, $q, 1, $chars))
            {
                $_str = $_str . mb_substr($to, $q, 1, $chars);
                $flag = true;
                break;
            }
        }

        if(!$flag)
        {
            $_str = $_str . mb_substr($str, $i, 1, $chars);
        }
    }

    return $_str;
}

function mb_replace($search, $replace, $subject, &$count=0)
{
    if (!is_array($search) && is_array($replace))
    {
        return false;
    }

    if (is_array($subject))
    {
        // call mb_replace for each single string in $subject
        foreach ($subject as &$string)
        {
            $string = &mb_replace($search, $replace, $string, $c);
            $count += $c;
        }
    }
    else if (is_array($search))
    {
        if (!is_array($replace))
        {
            foreach ($search as &$string)
            {
                $subject = mb_replace($string, $replace, $subject, $c);
                $count += $c;
            }
        }
        else
        {
            $n = max(count($search), count($replace));

            while ($n--)
            {
                $subject = mb_replace(current($search), current($replace), $subject, $c);
                $count += $c;
                next($search);
                next($replace);
            }
        }
    }
    else
    {
        $parts = mb_split(preg_quote($search), $subject);
        $count = count($parts) - 1;
        $subject = implode($replace, $parts);
    }

    return $subject;
}