PHP utf8::is_ascii方法代码示例

/**
 * utf8::str_pad
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _str_pad($str, $final_str_length, $pad_str = ' ', $pad_type = STR_PAD_RIGHT)
{
    if (utf8::is_ascii($str) and utf8::is_ascii($pad_str)) {
        return str_pad($str, $final_str_length, $pad_str, $pad_type);
    }
    $str_length = utf8::strlen($str);
    if ($final_str_length <= 0 or $final_str_length <= $str_length) {
        return $str;
    }
    $pad_str_length = utf8::strlen($pad_str);
    $pad_length = $final_str_length - $str_length;
    if ($pad_type == STR_PAD_RIGHT) {
        $repeat = ceil($pad_length / $pad_str_length);
        return utf8::substr($str . str_repeat($pad_str, $repeat), 0, $final_str_length);
    }
    if ($pad_type == STR_PAD_LEFT) {
        $repeat = ceil($pad_length / $pad_str_length);
        return utf8::substr(str_repeat($pad_str, $repeat), 0, floor($pad_length)) . $str;
    }
    if ($pad_type == STR_PAD_BOTH) {
        $pad_length /= 2;
        $pad_length_left = floor($pad_length);
        $pad_length_right = ceil($pad_length);
        $repeat_left = ceil($pad_length_left / $pad_str_length);
        $repeat_right = ceil($pad_length_right / $pad_str_length);
        $pad_left = utf8::substr(str_repeat($pad_str, $repeat_left), 0, $pad_length_left);
        $pad_right = utf8::substr(str_repeat($pad_str, $repeat_right), 0, $pad_length_left);
        return $pad_left . $str . $pad_right;
    }
    trigger_error('utf8::str_pad: Unknown padding type (' . $type . ')', E_USER_ERROR);
}

/**
 * utf8::strlen
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007-2008 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _strlen($str)
{
    if (utf8::is_ascii($str)) {
        return strlen($str);
    }
    return strlen(utf8_decode($str));
}

/**
 * utf8::strrev
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007-2008 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _strrev($str)
{
    if (utf8::is_ascii($str)) {
        return strrev($str);
    }
    preg_match_all('/./us', $str, $matches);
    return implode('', array_reverse($matches[0]));
}

/**
 * utf8::ucfirst
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _ucfirst($str)
{
    if (utf8::is_ascii($str)) {
        return ucfirst($str);
    }
    preg_match('/^(.?)(.*)$/us', $str, $matches);
    return utf8::strtoupper($matches[1]) . $matches[2];
}

/**
 * utf8::strcasecmp
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _strcasecmp($str1, $str2)
{
    if (utf8::is_ascii($str1) and utf8::is_ascii($str2)) {
        return strcasecmp($str1, $str2);
    }
    $str1 = utf8::strtolower($str1);
    $str2 = utf8::strtolower($str2);
    return strcmp($str1, $str2);
}

/**
 * utf8::ucwords
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007-2008 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _ucwords($str)
{
    if (utf8::is_ascii($str)) {
        return ucwords($str);
    }
    // [\x0c\x09\x0b\x0a\x0d\x20] matches form feeds, horizontal tabs, vertical tabs, linefeeds and carriage returns.
    // This corresponds to the definition of a 'word' defined at http://php.net/ucwords
    return preg_replace('/(?<=^|[\\x0c\\x09\\x0b\\x0a\\x0d\\x20])[^\\x0c\\x09\\x0b\\x0a\\x0d\\x20]/ue', 'utf8::strtoupper(\'$0\')', $str);
}

/**
 * utf8::strlen
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _strlen($str)
{
    // Try mb_strlen() first because it's faster than combination of is_ascii() and strlen()
    if (SERVER_UTF8) {
        return mb_strlen($str);
    }
    if (utf8::is_ascii($str)) {
        return strlen($str);
    }
    return strlen(utf8_decode($str));
}

/**
 * utf8::substr_replace
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _substr_replace($str, $replacement, $offset, $length = NULL)
{
    if (utf8::is_ascii($str)) {
        return $length === NULL ? substr_replace($str, $replacement, $offset) : substr_replace($str, $replacement, $offset, $length);
    }
    $length = $length === NULL ? utf8::strlen($str) : (int) $length;
    preg_match_all('/./us', $str, $str_array);
    preg_match_all('/./us', $replacement, $replacement_array);
    array_splice($str_array[0], $offset, $length, $replacement_array[0]);
    return implode('', $str_array[0]);
}

/**
 * utf8::substr
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _substr($str, $offset, $length = NULL)
{
    if (SERVER_UTF8) {
        return $length === NULL ? mb_substr($str, $offset) : mb_substr($str, $offset, $length);
    }
    if (utf8::is_ascii($str)) {
        return $length === NULL ? substr($str, $offset) : substr($str, $offset, $length);
    }
    // Normalize params
    $str = (string) $str;
    $strlen = utf8::strlen($str);
    $offset = (int) ($offset < 0) ? max(0, $strlen + $offset) : $offset;
    // Normalize to positive offset
    $length = $length === NULL ? NULL : (int) $length;
    // Impossible
    if ($length === 0 or $offset >= $strlen or $length < 0 and $length <= $offset - $strlen) {
        return '';
    }
    // Whole string
    if ($offset == 0 and ($length === NULL or $length >= $strlen)) {
        return $str;
    }
    // Build regex
    $regex = '^';
    // Create an offset expression
    if ($offset > 0) {
        // PCRE repeating quantifiers must be less than 65536, so repeat when necessary
        $x = (int) ($offset / 65535);
        $y = (int) ($offset % 65535);
        $regex .= $x == 0 ? '' : '(?:.{65535}){' . $x . '}';
        $regex .= $y == 0 ? '' : '.{' . $y . '}';
    }
    // Create a length expression
    if ($length === NULL) {
        $regex .= '(.*)';
        // No length set, grab it all
    } elseif ($length > 0) {
        // Reduce length so that it can't go beyond the end of the string
        $length = min($strlen - $offset, $length);
        $x = (int) ($length / 65535);
        $y = (int) ($length % 65535);
        $regex .= '(';
        $regex .= $x == 0 ? '' : '(?:.{65535}){' . $x . '}';
        $regex .= '.{' . $y . '})';
    } else {
        $x = (int) (-$length / 65535);
        $y = (int) (-$length % 65535);
        $regex .= '(.*)';
        $regex .= $x == 0 ? '' : '(?:.{65535}){' . $x . '}';
        $regex .= '.{' . $y . '}';
    }
    preg_match('/' . $regex . '/us', $str, $matches);
    return $matches[1];
}

/**
 * utf8::rtrim
 *
 * @package    Kohana
 * @author     Kohana Team
 * @copyright  (c) 2007-2008 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _rtrim($str, $charlist = NULL)
{
    if ($charlist === NULL) {
        return rtrim($str);
    }
    if (utf8::is_ascii($charlist)) {
        return rtrim($str, $charlist);
    }
    $charlist = preg_replace('#[-\\[\\]:\\\\^/]#', '\\\\$0', $charlist);
    return preg_replace('/[' . $charlist . ']++$/uD', '', $str);
}

/**
 * utf8::strrpos
 *
 * @package    Kohana
 * @author     Kohana Team
 * @copyright  (c) 2007-2008 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _strrpos($str, $search, $offset = 0)
{
    $offset = (int) $offset;
    if (utf8::is_ascii($str) and utf8::is_ascii($search)) {
        return strrpos($str, $search, $offset);
    }
    if ($offset == 0) {
        $array = explode($search, $str, -1);
        return isset($array[0]) ? utf8::strlen(implode($search, $array)) : FALSE;
    }
    $str = utf8::substr($str, $offset);
    $pos = utf8::strrpos($str, $search);
    return $pos === FALSE ? FALSE : $pos + $offset;
}

/**
 * utf8::str_split
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _str_split($str, $split_length = 1)
{
    $split_length = (int) $split_length;
    if (utf8::is_ascii($str)) {
        return str_split($str, $split_length);
    }
    if ($split_length < 1) {
        return FALSE;
    }
    if (utf8::strlen($str) <= $split_length) {
        return array($str);
    }
    preg_match_all('/.{' . $split_length . '}|[^\\x00]{1,' . $split_length . '}$/us', $str, $matches);
    return $matches[0];
}

/**
 * utf8::stristr
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _stristr($str, $search)
{
    if (utf8::is_ascii($str) and utf8::is_ascii($search)) {
        return stristr($str, $search);
    }
    if ($search == '') {
        return $str;
    }
    $str_lower = utf8::strtolower($str);
    $search_lower = utf8::strtolower($search);
    preg_match('/^(.*?)' . preg_quote($search, '/') . '/s', $str_lower, $matches);
    if (isset($matches[1])) {
        return substr($str, strlen($matches[1]));
    }
    return FALSE;
}

/**
 * utf8::strcspn
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _strcspn($str, $mask, $offset = NULL, $length = NULL)
{
    if ($str == '' or $mask == '') {
        return 0;
    }
    if (utf8::is_ascii($str) and utf8::is_ascii($mask)) {
        return $offset === NULL ? strcspn($str, $mask) : ($length === NULL ? strcspn($str, $mask, $offset) : strcspn($str, $mask, $offset, $length));
    }
    if ($start !== NULL or $length !== NULL) {
        $str = utf8::substr($str, $offset, $length);
    }
    // Escape these characters:  - [ ] . : \ ^ /
    // The . and : are escaped to prevent possible warnings about POSIX regex elements
    $mask = preg_replace('#[-[\\].:\\\\^/]#', '\\\\$0', $mask);
    preg_match('/^[^' . $mask . ']+/u', $str, $matches);
    return isset($matches[0]) ? utf8::strlen($matches[0]) : 0;
}

/**
 * utf8::strtoupper
 *
 * @package    Core
 * @author     Kohana Team
 * @copyright  (c) 2007-2008 Kohana Team
 * @copyright  (c) 2005 Harry Fuecks
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 */
function _strtoupper($str)
{
    if (utf8::is_ascii($str)) {
        return strtoupper($str);
    }
    static $UTF8_LOWER_TO_UPPER = NULL;
    if ($UTF8_LOWER_TO_UPPER === NULL) {
        $UTF8_LOWER_TO_UPPER = array(0x61 => 0x41, 0x3c6 => 0x3a6, 0x163 => 0x162, 0xe5 => 0xc5, 0x62 => 0x42, 0x13a => 0x139, 0xe1 => 0xc1, 0x142 => 0x141, 0x3cd => 0x38e, 0x101 => 0x100, 0x491 => 0x490, 0x3b4 => 0x394, 0x15b => 0x15a, 0x64 => 0x44, 0x3b3 => 0x393, 0xf4 => 0xd4, 0x44a => 0x42a, 0x439 => 0x419, 0x113 => 0x112, 0x43c => 0x41c, 0x15f => 0x15e, 0x144 => 0x143, 0xee => 0xce, 0x45e => 0x40e, 0x44f => 0x42f, 0x3ba => 0x39a, 0x155 => 0x154, 0x69 => 0x49, 0x73 => 0x53, 0x1e1f => 0x1e1e, 0x135 => 0x134, 0x447 => 0x427, 0x3c0 => 0x3a0, 0x438 => 0x418, 0xf3 => 0xd3, 0x440 => 0x420, 0x454 => 0x404, 0x435 => 0x415, 0x449 => 0x429, 0x14b => 0x14a, 0x431 => 0x411, 0x459 => 0x409, 0x1e03 => 0x1e02, 0xf6 => 0xd6, 0xf9 => 0xd9, 0x6e => 0x4e, 0x451 => 0x401, 0x3c4 => 0x3a4, 0x443 => 0x423, 0x15d => 0x15c, 0x453 => 0x403, 0x3c8 => 0x3a8, 0x159 => 0x158, 0x67 => 0x47, 0xe4 => 0xc4, 0x3ac => 0x386, 0x3ae => 0x389, 0x167 => 0x166, 0x3be => 0x39e, 0x165 => 0x164, 0x117 => 0x116, 0x109 => 0x108, 0x76 => 0x56, 0xfe => 0xde, 0x157 => 0x156, 0xfa => 0xda, 0x1e61 => 0x1e60, 0x1e83 => 0x1e82, 0xe2 => 0xc2, 0x119 => 0x118, 0x146 => 0x145, 0x70 => 0x50, 0x151 => 0x150, 0x44e => 0x42e, 0x129 => 0x128, 0x3c7 => 0x3a7, 0x13e => 0x13d, 0x442 => 0x422, 0x7a => 0x5a, 0x448 => 0x428, 0x3c1 => 0x3a1, 0x1e81 => 0x1e80, 0x16d => 0x16c, 0xf5 => 0xd5, 0x75 => 0x55, 0x177 => 0x176, 0xfc => 0xdc, 0x1e57 => 0x1e56, 0x3c3 => 0x3a3, 0x43a => 0x41a, 0x6d => 0x4d, 0x16b => 0x16a, 0x171 => 0x170, 0x444 => 0x424, 0xec => 0xcc, 0x169 => 0x168, 0x3bf => 0x39f, 0x6b => 0x4b, 0xf2 => 0xd2, 0xe0 => 0xc0, 0x434 => 0x414, 0x3c9 => 0x3a9, 0x1e6b => 0x1e6a, 0xe3 => 0xc3, 0x44d => 0x42d, 0x436 => 0x416, 0x1a1 => 0x1a0, 0x10d => 0x10c, 0x11d => 0x11c, 0xf0 => 0xd0, 0x13c => 0x13b, 0x45f => 0x40f, 0x45a => 0x40a, 0xe8 => 0xc8, 0x3c5 => 0x3a5, 0x66 => 0x46, 0xfd => 0xdd, 0x63 => 0x43, 0x21b => 0x21a, 0xea => 0xca, 0x3b9 => 0x399, 0x17a => 0x179, 0xef => 0xcf, 0x1b0 => 0x1af, 0x65 => 0x45, 0x3bb => 0x39b, 0x3b8 => 0x398, 0x3bc => 0x39c, 0x45c => 0x40c, 0x43f => 0x41f, 0x44c => 0x42c, 0xfe => 0xde, 0xf0 => 0xd0, 0x1ef3 => 0x1ef2, 0x68 => 0x48, 0xeb => 0xcb, 0x111 => 0x110, 0x433 => 0x413, 0x12f => 0x12e, 0xe6 => 0xc6, 0x78 => 0x58, 0x161 => 0x160, 0x16f => 0x16e, 0x3b1 => 0x391, 0x457 => 0x407, 0x173 => 0x172, 0xff => 0x178, 0x6f => 0x4f, 0x43b => 0x41b, 0x3b5 => 0x395, 0x445 => 0x425, 0x121 => 0x120, 0x17e => 0x17d, 0x17c => 0x17b, 0x3b6 => 0x396, 0x3b2 => 0x392, 0x3ad => 0x388, 0x1e85 => 0x1e84, 0x175 => 0x174, 0x71 => 0x51, 0x437 => 0x417, 0x1e0b => 0x1e0a, 0x148 => 0x147, 0x105 => 0x104, 0x458 => 0x408, 0x14d => 0x14c, 0xed => 0xcd, 0x79 => 0x59, 0x10b => 0x10a, 0x3ce => 0x38f, 0x72 => 0x52, 0x430 => 0x410, 0x455 => 0x405, 0x452 => 0x402, 0x127 => 0x126, 0x137 => 0x136, 0x12b => 0x12a, 0x3af => 0x38a, 0x44b => 0x42b, 0x6c => 0x4c, 0x3b7 => 0x397, 0x125 => 0x124, 0x219 => 0x218, 0xfb => 0xdb, 0x11f => 0x11e, 0x43e => 0x41e, 0x1e41 => 0x1e40, 0x3bd => 0x39d, 0x107 => 0x106, 0x3cb => 0x3ab, 0x446 => 0x426, 0xfe => 0xde, 0xe7 => 0xc7, 0x3ca => 0x3aa, 0x441 => 0x421, 0x432 => 0x412, 0x10f => 0x10e, 0xf8 => 0xd8, 0x77 => 0x57, 0x11b => 0x11a, 0x74 => 0x54, 0x6a => 0x4a, 0x45b => 0x40b, 0x456 => 0x406, 0x103 => 0x102, 0x3bb => 0x39b, 0xf1 => 0xd1, 0x43d => 0x41d, 0x3cc => 0x38c, 0xe9 => 0xc9, 0xf0 => 0xd0, 0x457 => 0x407, 0x123 => 0x122);
    }
    $uni = utf8::to_unicode($str);
    if ($uni === FALSE) {
        return FALSE;
    }
    for ($i = 0, $c = count($uni); $i < $c; $i++) {
        if (isset($UTF8_LOWER_TO_UPPER[$uni[$i]])) {
            $uni[$i] = $UTF8_LOWER_TO_UPPER[$uni[$i]];
        }
    }
    return utf8::from_unicode($uni);
}