function Mbstring::mb_strrpos

1 call to Mbstring::mb_strrpos()

Mbstring::mb_strripos in vendor/symfony/polyfill-mbstring/Mbstring.php

File

vendor/symfony/polyfill-mbstring/Mbstring.php, line 546

Class

Mbstring

Partial mbstring implementation in PHP, iconv based, UTF-8 centric.

Namespace

Symfony\Polyfill\Mbstring

Code

public static function mb_strrpos($haystack, $needle, $offset = 0, $encoding = null) {
    $encoding = self::getEncoding($encoding);
    if ('CP850' === $encoding || 'ASCII' === $encoding) {
        return strrpos($haystack, $needle, $offset);
    }
    if ($offset != (int) $offset) {
        $offset = 0;
    }
    elseif ($offset = (int) $offset) {
        if ($offset < 0) {
            if (0 > ($offset += self::mb_strlen($needle))) {
                $haystack = self::mb_substr($haystack, 0, $offset, $encoding);
            }
            $offset = 0;
        }
        else {
            $haystack = self::mb_substr($haystack, $offset, 2147483647, $encoding);
        }
    }
    $pos = '' !== $needle || 80000 > \PHP_VERSION_ID ? iconv_strrpos($haystack, $needle, $encoding) : self::mb_strlen($haystack, $encoding);
    return false !== $pos ? $offset + $pos : false;
}