framework/web/Request.php
private function utf8Encode($s)
    {
        $s .= $s;
        $len = \strlen($s);
        for ($i = $len >> 1, $j = 0; $i < $len; ++$i, ++$j) {
            switch (true) {
                case $s[$i] < "\x80": $s[$j] = $s[$i]; break;
                case $s[$i] < "\xC0": $s[$j] = "\xC2"; $s[++$j] = $s[$i]; break;
                default: $s[$j] = "\xC3"; $s[++$j] = \chr(\ord($s[$i]) - 64); break;
            }
        }
        return substr($s, 0, $j);
    }
private function utf8Encode($s)
    {
        $s .= $s;
        $len = \strlen($s);
        for ($i = $len >> 1, $j = 0; $i < $len; ++$i, ++$j) {
            switch (true) {
                case $s[$i] < "\x80": $s[$j] = $s[$i]; break;
                case $s[$i] < "\xC0": $s[$j] = "\xC2"; $s[++$j] = $s[$i]; break;
                default: $s[$j] = "\xC3"; $s[++$j] = \chr(\ord($s[$i]) - 64); break;
            }
        }
        return substr($s, 0, $j);
    }
private function utf8Encode ( $ s ) { $ s .= $ s ; $ len = \ strlen ( $ s ) ; for ( $ i = $ len >> 1 , $ j = 0 ; $ i < $ len ; ++ $ i , ++ $ j ) { switch ( true ) { case $ s [ $ i ] < "\x80" : $ s [ $ j ] = $ s [ $ i ] ; break ; case $ s [ $ i ] < "\xC0" : $ s [ $ j ] = "\xC2" ; $ s [ ++ $ j ] = $ s [ $ i ] ; break ; default : $ s [ $ j ] = "\xC3" ; $ s [ ++ $ j ] = \ chr ( \ ord ( $ s [ $ i ] ) - 64 ) ; break ; } } return substr ( $ s , 0 , $ j ) ; }
Encodes an ISO-8859-1 string to UTF-8
@param string $s
@return string the UTF-8 translation of `s`.
@see https://github.com/symfony/polyfill-php72/blob/master/Php72.php#L24
Encodes an ISO - 8859 - 1 string to UTF - 8