Replace Japanese Kana from UTF-8-MAC to UTF-8 for any env.

normalizeUTF8MacKana.php

<?php

/**
 * Replace Japanese Kana from UTF-8-MAC to UTF-8 for any env.
 * 
 * code is generated
 * 
 * @param string utf-8-mac string
 * @return string utf-8 string
 */

function normalizeUTF8MacKana($str) {
    return str_replace(
        array("\xe3\x81\x8b\xe3\x82\x99", "\xe3\x81\x8d\xe3\x82\x99", "\xe3\x81\x8f\xe3\x82\x99", "\xe3\x81\x91\xe3\x82\x99", "\xe3\x81\x93\xe3\x82\x99", "\xe3\x81\x95\xe3\x82\x99", "\xe3\x81\x97\xe3\x82\x99", "\xe3\x81\x99\xe3\x82\x99", "\xe3\x81\x9b\xe3\x82\x99", "\xe3\x81\x9d\xe3\x82\x99", "\xe3\x81\x9f\xe3\x82\x99", "\xe3\x81\xa1\xe3\x82\x99", "\xe3\x81\xa4\xe3\x82\x99", "\xe3\x81\xa6\xe3\x82\x99", "\xe3\x81\xa8\xe3\x82\x99", "\xe3\x81\xaf\xe3\x82\x99", "\xe3\x81\xb2\xe3\x82\x99", "\xe3\x81\xb5\xe3\x82\x99", "\xe3\x81\xb8\xe3\x82\x99", "\xe3\x81\xbb\xe3\x82\x99", "\xe3\x81\x86\xe3\x82\x99", "\xe3\x82\x9d\xe3\x82\x99", "\xe3\x82\xab\xe3\x82\x99", "\xe3\x82\xad\xe3\x82\x99", "\xe3\x82\xaf\xe3\x82\x99", "\xe3\x82\xb1\xe3\x82\x99", "\xe3\x82\xb3\xe3\x82\x99", "\xe3\x82\xb5\xe3\x82\x99", "\xe3\x82\xb7\xe3\x82\x99", "\xe3\x82\xb9\xe3\x82\x99", "\xe3\x82\xbb\xe3\x82\x99", "\xe3\x82\xbd\xe3\x82\x99", "\xe3\x82\xbf\xe3\x82\x99", "\xe3\x83\x81\xe3\x82\x99", "\xe3\x83\x84\xe3\x82\x99", "\xe3\x83\x86\xe3\x82\x99", "\xe3\x83\x88\xe3\x82\x99", "\xe3\x83\x8f\xe3\x82\x99", "\xe3\x83\x92\xe3\x82\x99", "\xe3\x83\x95\xe3\x82\x99", "\xe3\x83\x98\xe3\x82\x99", "\xe3\x83\x9b\xe3\x82\x99", "\xe3\x82\xa6\xe3\x82\x99", "\xe3\x83\xaf\xe3\x82\x99", "\xe3\x83\xb0\xe3\x82\x99", "\xe3\x83\xb1\xe3\x82\x99", "\xe3\x83\xb2\xe3\x82\x99", "\xe3\x81\xaf\xe3\x82\x9a", "\xe3\x81\xb2\xe3\x82\x9a", "\xe3\x81\xb5\xe3\x82\x9a", "\xe3\x81\xb8\xe3\x82\x9a", "\xe3\x81\xbb\xe3\x82\x9a", "\xe3\x83\x8f\xe3\x82\x9a", "\xe3\x83\x92\xe3\x82\x9a", "\xe3\x83\x95\xe3\x82\x9a", "\xe3\x83\x98\xe3\x82\x9a", "\xe3\x83\x9b\xe3\x82\x9a", "\xe3\x82\x99", "\xe3\x82\x9a"),
        array("\xe3\x81\x8c", "\xe3\x81\x8e", "\xe3\x81\x90", "\xe3\x81\x92", "\xe3\x81\x94", "\xe3\x81\x96", "\xe3\x81\x98", "\xe3\x81\x9a", "\xe3\x81\x9c", "\xe3\x81\x9e", "\xe3\x81\xa0", "\xe3\x81\xa2", "\xe3\x81\xa5", "\xe3\x81\xa7", "\xe3\x81\xa9", "\xe3\x81\xb0", "\xe3\x81\xb3", "\xe3\x81\xb6", "\xe3\x81\xb9", "\xe3\x81\xbc", "\xe3\x82\x94", "\xe3\x82\x9e", "\xe3\x82\xac", "\xe3\x82\xae", "\xe3\x82\xb0", "\xe3\x82\xb2", "\xe3\x82\xb4", "\xe3\x82\xb6", "\xe3\x82\xb8", "\xe3\x82\xba", "\xe3\x82\xbc", "\xe3\x82\xbe", "\xe3\x83\x80", "\xe3\x83\x82", "\xe3\x83\x85", "\xe3\x83\x87", "\xe3\x83\x89", "\xe3\x83\x90", "\xe3\x83\x93", "\xe3\x83\x96", "\xe3\x83\x99", "\xe3\x83\x9c", "\xe3\x83\xb4", "\xe3\x83\xb7", "\xe3\x83\xb8", "\xe3\x83\xb9", "\xe3\x83\xba", "\xe3\x81\xb1", "\xe3\x81\xb4", "\xe3\x81\xb7", "\xe3\x81\xba", "\xe3\x81\xbd", "\xe3\x83\x91", "\xe3\x83\x94", "\xe3\x83\x97", "\xe3\x83\x9a", "\xe3\x83\x9d", "\xe3\x82\x9b", "\xe3\x82\x9c"),
        $str
    );
}

normalizeUTF8MacKanaFuncGen.php

<?php

/**
 * Generate the normalizeUTF8MacKana function.
 * 
 * @return string
 */
function normalizeUTF8MacKanaFuncGen() {
    $fullLs = [
        "かきくけこさしすせそたちつてとはひふへほうゝカキクケコサシスセソタチツテトハヒフヘホウワヰヱヲ",
        "がぎぐげござじずぜぞだぢづでどばびぶべぼゔゞガギグゲゴザジズゼゾダヂヅデドバビブベボヴヷヸヹヺ"
    ];
    $halfLs = ["はひふへほハヒフヘホ", "ぱぴぷぺぽパピプペポ"];

    $search = [];
    $replace = [];
    foreach ([$fullLs, $halfLs] as $isHalf => $ls) {
        foreach ([true, false] as $key => $isSearch) {
            $name = $isSearch ? 'search' : 'replace';
            $char = mb_convert_encoding($ls[$key], 'UTF-8', 'auto');
            for ($i = 0; $i < mb_strlen($char); $i++) {
                $str = mb_substr($char, $i, 1);
                if ($isSearch) {
                    $str .= $isHalf ? "\xe3\x82\x9a" : "\xe3\x82\x99";
                }
                $hex = '';
                for ($j = 0; $j < strlen($str); $j++) {
                    $hex .= '\x' . dechex(ord($str[$j]));
                }
                $$name[] = $hex;
            }
        }
    }

    return implode("\n", [
        'function normalizeUTF8MacKana($str) {',
        '    return str_replace(',
        '        array("' . implode('", "', $search ) . '", "\xe3\x82\x99", "\xe3\x82\x9a"),',
        '        array("' . implode('", "', $replace) . '", "\xe3\x82\x9b", "\xe3\x82\x9c"),',
        '        $str',
        '    );',
        '}'
    ]);
}