Форум программистов [Powered by Invision Power Board]

Код

    /*-------------------------------------------------------------------------*/
    // Convert decimal character references to UTF-8
    /*-------------------------------------------------------------------------*/
    /**
    * Convert a decimal character to UTF-8
    */
    function dec_char_ref_to_utf8($int=0)
    {
        $return = '';

        if ( $int < 0 )
        {
            return chr(0);
        }
        else if ( $int <= 0x007f )
        {
            $return .= chr($int);
        }
        else if ( $int <= 0x07ff )
        {
            $return .= chr(0xc0 | ($int >> 6));
            $return .= chr(0x80 | ($int & 0x003f));
        }
        else if ( $int <= 0xffff )
        {
            $return .= chr(0xe0 | ($int  >> 12));
            $return .= chr(0x80 | (($int >> 6) & 0x003f));
            $return .= chr(0x80 | ($int  & 0x003f));
        }
        else if ( $int <= 0x10ffff )
        {
            $return .= chr(0xf0 | ($int  >> 18));
            $return .= chr(0x80 | (($int >> 12) & 0x3f));
            $return .= chr(0x80 | (($int >> 6) & 0x3f));
            $return .= chr(0x80 | ($int  &  0x3f));
        }
        else
        { 
            return chr(0);
        }
        
        return $return;
    }

    /*-------------------------------------------------------------------------*/
    // Helper function
    /*-------------------------------------------------------------------------*/
    
    function dec_char_ref_to_utf8_hexdec( $matches )
    {
        return $this->dec_char_ref_to_utf8( hexdec( $matches[1] ) );
    }
    
    /*-------------------------------------------------------------------------*/
    // Convert Ajax unicode
    /*-------------------------------------------------------------------------*/
    
    function convert_unicode($t)
    {
        if ( strtolower($this->ipsclass->vars['gb_char_set']) == 'utf-8' )
        {
            return preg_replace_callback( '#%u([0-9A-F]{1,4})#i', array( &$this, 'dec_char_ref_to_utf8_hexdec' ), utf8_encode($t) );
        }
        else
        {
            return preg_replace_callback( '#%u([0-9A-F]{1,4})#i', create_function( '$matches', "return '&#' . hexdec(\$matches[1]) . ';';" ), $t );
        }
    }