PHP

 0');
        return false;
    }
    $default_options = array(
    'white_spaces'	=> array(' ', "\t"),
    'new_lines'		=> array("\r\n", "\n"),
    'force_line_breaks' => true,
    'callback'		=> null,
    'callback_params'	=> array(),
    'char_widths'	=> null,
    );

    extract(array_merge($default_options, $options));

    if ($callback == null) {
        if ($char_widths != null) {
            $callback = create_function('$char, $char_map', 'return (isset($char_map[$char]) ? $char_map[$char] : 0);');
            $callback_params = array($char_widths);
        } else {
            $callback = create_function('$char', 'return 1;');
        }
    }

    $string = str_replace($new_lines, "\n", $string);
    $string = str_replace($white_spaces, ' ', $string);

    $str_length = strlen($string);

    if ($str_length > 0 && $string[$str_length-1] == "\n") {
        $str_length--;
    }

    $sep = -1;
    $pos = $j = $line_length = 0;
    $number_of_lines = 1;

    while ($pos < $str_length) {
        $char = $string[$pos];
        if ($char == "\n") {
            $number_of_lines++;
            $pos++;
            $sep = -1;
            $j = $pos;
            $line_length = 0;
        } else {
            if ($char == ' ') {
                $sep = $pos;
            }

            $line_length += call_user_func_array($callback, array_merge(array($char), $callback_params));
            if ($line_length > $width) {
                if ($sep == -1) {
                    if (!$force_line_breaks) {
                        return false;
                    } else {
                        if ($pos == $j) { // äà ê òîìó æå $pos == $j !
                            $pos++;
                        }
                    }
                } else {
                    $pos = $sep + 1;
                }
                $sep = -1;
                $j = $pos;
                $line_length = 0;
                $number_of_lines++;
            } else {
                $pos++;
            }
        }
    }

    return $number_of_lines;
}
?>