function Iconv::strlen2

1 call to Iconv::strlen2()

Iconv::iconv_strlen in vendor/symfony/polyfill-iconv/Iconv.php

File

vendor/symfony/polyfill-iconv/Iconv.php, line 457

Class

Iconv

iconv implementation in pure PHP, UTF-8 centric.

Namespace

Symfony\Polyfill\Iconv

Code

public static function strlen2($s, $encoding = null) {
    if (null === $encoding) {
        $encoding = self::$internalEncoding;
    }
    if (0 !== stripos($encoding, 'utf-8') && false === ($s = self::iconv($encoding, 'utf-8', $s))) {
        return false;
    }
    $ulenMask = self::$ulenMask;
    $i = 0;
    $j = 0;
    $len = \strlen($s);
    while ($i < $len) {
        $u = $s[$i] & "\xf0";
        $i += $ulenMask[$u] ?? 1;
        ++$j;
    }
    return $j;
}