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<?php
function utf8_strlen($string) {
return strlen(utf8_decode($string));
}
function utf8_strpos($string, $needle, $offset = null) {
if (is_null($offset)) {
$data = explode($needle, $string, 2);
if (count($data) > 1) {
return utf8_strlen($data[0]);
}
return false;
} else {
if (!is_int($offset)) {
trigger_error('utf8_strpos: Offset must be an integer', E_USER_ERROR);
return false;
}
$string = utf8_substr($string, $offset);
if (false !== ($position = utf8_strpos($string, $needle))) {
return $position + $offset;
}
return false;
}
}
function utf8_strrpos($string, $needle, $offset = null) {
if (is_null($offset)) {
$data = explode($needle, $string);
if (count($data) > 1) {
array_pop($data);
$string = join($needle, $data);
return utf8_strlen($string);
}
return false;
} else {
if (!is_int($offset)) {
trigger_error('utf8_strrpos expects parameter 3 to be long', E_USER_WARNING);
return false;
}
$string = utf8_substr($string, $offset);
if (false !== ($position = utf8_strrpos($string, $needle))) {
return $position + $offset;
}
return false;
}
}
function utf8_substr($string, $offset, $length = null) {
// generates E_NOTICE
// for PHP4 objects, but not PHP5 objects
$string = (string)$string;
$offset = (int)$offset;
if (!is_null($length)) {
$length = (int)$length;
}
// handle trivial cases
if ($length === 0) {
return '';
}
if ($offset < 0 && $length < 0 && $length < $offset) {
return '';
}
// normalise negative offsets (we could use a tail
// anchored pattern, but they are horribly slow!)
if ($offset < 0) {
$strlen = strlen(utf8_decode($string));
$offset = $strlen + $offset;
if ($offset < 0) {
$offset = 0;
}
}
$Op = '';
$Lp = '';
// establish a pattern for offset, a
// non-captured group equal in length to offset
if ($offset > 0) {
$Ox = (int)($offset / 65535);
$Oy = $offset%65535;
if ($Ox) {
$Op = '(?:.{65535}){' . $Ox . '}';
}
$Op = '^(?:' . $Op . '.{' . $Oy . '})';
} else {
$Op = '^';
}
// establish a pattern for length
if (is_null($length)) {
$Lp = '(.*)$';
} else {
if (!isset($strlen)) {
$strlen = strlen(utf8_decode($string));
}
// another trivial case
if ($offset > $strlen) {
return '';
}
if ($length > 0) {
$length = min($strlen - $offset, $length);
$Lx = (int)($length / 65535);
$Ly = $length % 65535;
// negative length requires a captured group
// of length characters
if ($Lx) {
$Lp = '(?:.{65535}){' . $Lx . '}';
}
$Lp = '(' . $Lp . '.{' . $Ly . '})';
} elseif ($length < 0) {
if ($length < ($offset - $strlen)) {
return '';
}
$Lx = (int)((-$length) / 65535);
$Ly = (-$length)%65535;
// negative length requires ... capture everything
// except a group of -length characters
// anchored at the tail-end of the string
if ($Lx) {
$Lp = '(?:.{65535}){' . $Lx . '}';
}
$Lp = '(.*)(?:' . $Lp . '.{' . $Ly . '})$';
}
}
if (!preg_match( '#' . $Op . $Lp . '#us', $string, $match)) {
return '';
}
return $match[1];
}
function utf8_strtolower($string) {
static $UTF8_UPPER_TO_LOWER = null;
if (is_null($UTF8_UPPER_TO_LOWER)) {
$UTF8_UPPER_TO_LOWER = array(
0x0041 => 0x0061,
0x03A6 => 0x03C6,
0x0162 => 0x0163,
0x00C5 => 0x00E5,
0x0042 => 0x0062,
0x0139 => 0x013A,
0x00C1 => 0x00E1,
0x0141 => 0x0142,
0x038E => 0x03CD,
0x0100 => 0x0101,
0x0490 => 0x0491,
0x0394 => 0x03B4,
0x015A => 0x015B,
0x0044 => 0x0064,
0x0393 => 0x03B3,
0x00D4 => 0x00F4,
0x042A => 0x044A,
0x0419 => 0x0439,
0x0112 => 0x0113,
0x041C => 0x043C,
0x015E => 0x015F,
0x0143 => 0x0144,
0x00CE => 0x00EE,
0x040E => 0x045E,
0x042F => 0x044F,
0x039A => 0x03BA,
0x0154 => 0x0155,
0x0049 => 0x0069,
0x0053 => 0x0073,
0x1E1E => 0x1E1F,
0x0134 => 0x0135,
0x0427 => 0x0447,
0x03A0 => 0x03C0,
0x0418 => 0x0438,
0x00D3 => 0x00F3,
0x0420 => 0x0440,
0x0404 => 0x0454,
0x0415 => 0x0435,
0x0429 => 0x0449,
0x014A => 0x014B,
0x0411 => 0x0431,
0x0409 => 0x0459,
0x1E02 => 0x1E03,
0x00D6 => 0x00F6,
0x00D9 => 0x00F9,
0x004E => 0x006E,
0x0401 => 0x0451,
0x03A4 => 0x03C4,
0x0423 => 0x0443,
0x015C => 0x015D,
0x0403 => 0x0453,
0x03A8 => 0x03C8,
0x0158 => 0x0159,
0x0047 => 0x0067,
0x00C4 => 0x00E4,
0x0386 => 0x03AC,
0x0389 => 0x03AE,
0x0166 => 0x0167,
0x039E => 0x03BE,
0x0164 => 0x0165,
0x0116 => 0x0117,
0x0108 => 0x0109,
0x0056 => 0x0076,
0x00DE => 0x00FE,
0x0156 => 0x0157,
0x00DA => 0x00FA,
0x1E60 => 0x1E61,
0x1E82 => 0x1E83,
0x00C2 => 0x00E2,
0x0118 => 0x0119,
0x0145 => 0x0146,
0x0050 => 0x0070,
0x0150 => 0x0151,
0x042E => 0x044E,
0x0128 => 0x0129,
0x03A7 => 0x03C7,
0x013D => 0x013E,
0x0422 => 0x0442,
0x005A => 0x007A,
0x0428 => 0x0448,
0x03A1 => 0x03C1,
0x1E80 => 0x1E81,
0x016C => 0x016D,
0x00D5 => 0x00F5,
0x0055 => 0x0075,
0x0176 => 0x0177,
0x00DC => 0x00FC,
0x1E56 => 0x1E57,
0x03A3 => 0x03C3,
0x041A => 0x043A,
0x004D => 0x006D,
0x016A => 0x016B,
0x0170 => 0x0171,
0x0424 => 0x0444,
0x00CC => 0x00EC,
0x0168 => 0x0169,
0x039F => 0x03BF,
0x004B => 0x006B,
0x00D2 => 0x00F2,
0x00C0 => 0x00E0,
0x0414 => 0x0434,
0x03A9 => 0x03C9,
0x1E6A => 0x1E6B,
0x00C3 => 0x00E3,
0x042D => 0x044D,
0x0416 => 0x0436,
0x01A0 => 0x01A1,
0x010C => 0x010D,
0x011C => 0x011D,
0x00D0 => 0x00F0,
0x013B => 0x013C,
0x040F => 0x045F,
0x040A => 0x045A,
0x00C8 => 0x00E8,
0x03A5 => 0x03C5,
0x0046 => 0x0066,
0x00DD => 0x00FD,
0x0043 => 0x0063,
0x021A => 0x021B,
0x00CA => 0x00EA,
0x0399 => 0x03B9,
0x0179 => 0x017A,
0x00CF => 0x00EF,
0x01AF => 0x01B0,
0x0045 => 0x0065,
0x039B => 0x03BB,
0x0398 => 0x03B8,
0x039C => 0x03BC,
0x040C => 0x045C,
0x041F => 0x043F,
0x042C => 0x044C,
0x00DE => 0x00FE,
0x00D0 => 0x00F0,
0x1EF2 => 0x1EF3,
0x0048 => 0x0068,
0x00CB => 0x00EB,
0x0110 => 0x0111,
0x0413 => 0x0433,
0x012E => 0x012F,
0x00C6 => 0x00E6,
0x0058 => 0x0078,
0x0160 => 0x0161,
0x016E => 0x016F,
0x0391 => 0x03B1,
0x0407 => 0x0457,
0x0172 => 0x0173,
0x0178 => 0x00FF,
0x004F => 0x006F,
0x041B => 0x043B,
0x0395 => 0x03B5,
0x0425 => 0x0445,
0x0120 => 0x0121,
0x017D => 0x017E,
0x017B => 0x017C,
0x0396 => 0x03B6,
0x0392 => 0x03B2,
0x0388 => 0x03AD,
0x1E84 => 0x1E85,
0x0174 => 0x0175,
0x0051 => 0x0071,
0x0417 => 0x0437,
0x1E0A => 0x1E0B,
0x0147 => 0x0148,
0x0104 => 0x0105,
0x0408 => 0x0458,
0x014C => 0x014D,
0x00CD => 0x00ED,
0x0059 => 0x0079,
0x010A => 0x010B,
0x038F => 0x03CE,
0x0052 => 0x0072,
0x0410 => 0x0430,
0x0405 => 0x0455,
0x0402 => 0x0452,
0x0126 => 0x0127,
0x0136 => 0x0137,
0x012A => 0x012B,
0x038A => 0x03AF,
0x042B => 0x044B,
0x004C => 0x006C,
0x0397 => 0x03B7,
0x0124 => 0x0125,
0x0218 => 0x0219,
0x00DB => 0x00FB,
0x011E => 0x011F,
0x041E => 0x043E,
0x1E40 => 0x1E41,
0x039D => 0x03BD,
0x0106 => 0x0107,
0x03AB => 0x03CB,
0x0426 => 0x0446,
0x00DE => 0x00FE,
0x00C7 => 0x00E7,
0x03AA => 0x03CA,
0x0421 => 0x0441,
0x0412 => 0x0432,
0x010E => 0x010F,
0x00D8 => 0x00F8,
0x0057 => 0x0077,
0x011A => 0x011B,
0x0054 => 0x0074,
0x004A => 0x006A,
0x040B => 0x045B,
0x0406 => 0x0456,
0x0102 => 0x0103,
0x039B => 0x03BB,
0x00D1 => 0x00F1,
0x041D => 0x043D,
0x038C => 0x03CC,
0x00C9 => 0x00E9,
0x00D0 => 0x00F0,
0x0407 => 0x0457,
0x0122 => 0x0123
);
}
$unicode = utf8_to_unicode($string);
if (!$unicode) {
return false;
}
$count = count($unicode);
for ($i = 0; $i < $count; $i++){
if (isset($UTF8_UPPER_TO_LOWER[$unicode[$i]]) ) {
$unicode[$i] = $UTF8_UPPER_TO_LOWER[$unicode[$i]];
}
}
return utf8_from_unicode($unicode);
}
function utf8_strtoupper($string) {
static $UTF8_LOWER_TO_UPPER = null;
if (is_null($UTF8_LOWER_TO_UPPER)) {
$UTF8_LOWER_TO_UPPER = array(
0x0061 => 0x0041,
0x03C6 => 0x03A6,
0x0163 => 0x0162,
0x00E5 => 0x00C5,
0x0062 => 0x0042,
0x013A => 0x0139,
0x00E1 => 0x00C1,
0x0142 => 0x0141,
0x03CD => 0x038E,
0x0101 => 0x0100,
0x0491 => 0x0490,
0x03B4 => 0x0394,
0x015B => 0x015A,
0x0064 => 0x0044,
0x03B3 => 0x0393,
0x00F4 => 0x00D4,
0x044A => 0x042A,
0x0439 => 0x0419,
0x0113 => 0x0112,
0x043C => 0x041C,
0x015F => 0x015E,
0x0144 => 0x0143,
0x00EE => 0x00CE,
0x045E => 0x040E,
0x044F => 0x042F,
0x03BA => 0x039A,
0x0155 => 0x0154,
0x0069 => 0x0049,
0x0073 => 0x0053,
0x1E1F => 0x1E1E,
0x0135 => 0x0134,
0x0447 => 0x0427,
0x03C0 => 0x03A0,
0x0438 => 0x0418,
0x00F3 => 0x00D3,
0x0440 => 0x0420,
0x0454 => 0x0404,
0x0435 => 0x0415,
0x0449 => 0x0429,
0x014B => 0x014A,
0x0431 => 0x0411,
0x0459 => 0x0409,
0x1E03 => 0x1E02,
0x00F6 => 0x00D6,
0x00F9 => 0x00D9,
0x006E => 0x004E,
0x0451 => 0x0401,
0x03C4 => 0x03A4,
0x0443 => 0x0423,
0x015D => 0x015C,
0x0453 => 0x0403,
0x03C8 => 0x03A8,
0x0159 => 0x0158,
0x0067 => 0x0047,
0x00E4 => 0x00C4,
0x03AC => 0x0386,
0x03AE => 0x0389,
0x0167 => 0x0166,
0x03BE => 0x039E,
0x0165 => 0x0164,
0x0117 => 0x0116,
0x0109 => 0x0108,
0x0076 => 0x0056,
0x00FE => 0x00DE,
0x0157 => 0x0156,
0x00FA => 0x00DA,
0x1E61 => 0x1E60,
0x1E83 => 0x1E82,
0x00E2 => 0x00C2,
0x0119 => 0x0118,
0x0146 => 0x0145,
0x0070 => 0x0050,
0x0151 => 0x0150,
0x044E => 0x042E,
0x0129 => 0x0128,
0x03C7 => 0x03A7,
0x013E => 0x013D,
0x0442 => 0x0422,
0x007A => 0x005A,
0x0448 => 0x0428,
0x03C1 => 0x03A1,
0x1E81 => 0x1E80,
0x016D => 0x016C,
0x00F5 => 0x00D5,
0x0075 => 0x0055,
0x0177 => 0x0176,
0x00FC => 0x00DC,
0x1E57 => 0x1E56,
0x03C3 => 0x03A3,
0x043A => 0x041A,
0x006D => 0x004D,
0x016B => 0x016A,
0x0171 => 0x0170,
0x0444 => 0x0424,
0x00EC => 0x00CC,
0x0169 => 0x0168,
0x03BF => 0x039F,
0x006B => 0x004B,
0x00F2 => 0x00D2,
0x00E0 => 0x00C0,
0x0434 => 0x0414,
0x03C9 => 0x03A9,
0x1E6B => 0x1E6A,
0x00E3 => 0x00C3,
0x044D => 0x042D,
0x0436 => 0x0416,
0x01A1 => 0x01A0,
0x010D => 0x010C,
0x011D => 0x011C,
0x00F0 => 0x00D0,
0x013C => 0x013B,
0x045F => 0x040F,
0x045A => 0x040A,
0x00E8 => 0x00C8,
0x03C5 => 0x03A5,
0x0066 => 0x0046,
0x00FD => 0x00DD,
0x0063 => 0x0043,
0x021B => 0x021A,
0x00EA => 0x00CA,
0x03B9 => 0x0399,
0x017A => 0x0179,
0x00EF => 0x00CF,
0x01B0 => 0x01AF,
0x0065 => 0x0045,
0x03BB => 0x039B,
0x03B8 => 0x0398,
0x03BC => 0x039C,
0x045C => 0x040C,
0x043F => 0x041F,
0x044C => 0x042C,
0x00FE => 0x00DE,
0x00F0 => 0x00D0,
0x1EF3 => 0x1EF2,
0x0068 => 0x0048,
0x00EB => 0x00CB,
0x0111 => 0x0110,
0x0433 => 0x0413,
0x012F => 0x012E,
0x00E6 => 0x00C6,
0x0078 => 0x0058,
0x0161 => 0x0160,
0x016F => 0x016E,
0x03B1 => 0x0391,
0x0457 => 0x0407,
0x0173 => 0x0172,
0x00FF => 0x0178,
0x006F => 0x004F,
0x043B => 0x041B,
0x03B5 => 0x0395,
0x0445 => 0x0425,
0x0121 => 0x0120,
0x017E => 0x017D,
0x017C => 0x017B,
0x03B6 => 0x0396,
0x03B2 => 0x0392,
0x03AD => 0x0388,
0x1E85 => 0x1E84,
0x0175 => 0x0174,
0x0071 => 0x0051,
0x0437 => 0x0417,
0x1E0B => 0x1E0A,
0x0148 => 0x0147,
0x0105 => 0x0104,
0x0458 => 0x0408,
0x014D => 0x014C,
0x00ED => 0x00CD,
0x0079 => 0x0059,
0x010B => 0x010A,
0x03CE => 0x038F,
0x0072 => 0x0052,
0x0430 => 0x0410,
0x0455 => 0x0405,
0x0452 => 0x0402,
0x0127 => 0x0126,
0x0137 => 0x0136,
0x012B => 0x012A,
0x03AF => 0x038A,
0x044B => 0x042B,
0x006C => 0x004C,
0x03B7 => 0x0397,
0x0125 => 0x0124,
0x0219 => 0x0218,
0x00FB => 0x00DB,
0x011F => 0x011E,
0x043E => 0x041E,
0x1E41 => 0x1E40,
0x03BD => 0x039D,
0x0107 => 0x0106,
0x03CB => 0x03AB,
0x0446 => 0x0426,
0x00FE => 0x00DE,
0x00E7 => 0x00C7,
0x03CA => 0x03AA,
0x0441 => 0x0421,
0x0432 => 0x0412,
0x010F => 0x010E,
0x00F8 => 0x00D8,
0x0077 => 0x0057,
0x011B => 0x011A,
0x0074 => 0x0054,
0x006A => 0x004A,
0x045B => 0x040B,
0x0456 => 0x0406,
0x0103 => 0x0102,
0x03BB => 0x039B,
0x00F1 => 0x00D1,
0x043D => 0x041D,
0x03CC => 0x038C,
0x00E9 => 0x00C9,
0x00F0 => 0x00D0,
0x0457 => 0x0407,
0x0123 => 0x0122
);
}
$unicode = utf8_to_unicode($string);
if (!$unicode) {
return false;
}
$count = count($unicode);
for ($i = 0; $i < $count; $i++){
if (isset($UTF8_LOWER_TO_UPPER[$unicode[$i]]) ) {
$unicode[$i] = $UTF8_LOWER_TO_UPPER[$unicode[$i]];
}
}
return utf8_from_unicode($unicode);
}
function utf8_to_unicode($str) {
$mState = 0; // cached expected number of octets after the current octet
// until the beginning of the next UTF8 character sequence
$mUcs4 = 0; // cached Unicode character
$mBytes = 1; // cached expected number of octets in the current sequence
$out = array();
$len = strlen($str);
for($i = 0; $i < $len; $i++) {
$in = ord($str{$i});
if ($mState == 0) {
// When mState is zero we expect either a US-ASCII character or a
// multi-octet sequence.
if (0 == (0x80 & ($in))) {
// US-ASCII, pass straight through.
$out[] = $in;
$mBytes = 1;
} elseif (0xC0 == (0xE0 & ($in))) {
// First octet of 2 octet sequence
$mUcs4 = ($in);
$mUcs4 = ($mUcs4 & 0x1F) << 6;
$mState = 1;
$mBytes = 2;
} elseif (0xE0 == (0xF0 & ($in))) {
// First octet of 3 octet sequence
$mUcs4 = ($in);
$mUcs4 = ($mUcs4 & 0x0F) << 12;
$mState = 2;
$mBytes = 3;
} else if (0xF0 == (0xF8 & ($in))) {
// First octet of 4 octet sequence
$mUcs4 = ($in);
$mUcs4 = ($mUcs4 & 0x07) << 18;
$mState = 3;
$mBytes = 4;
} else if (0xF8 == (0xFC & ($in))) {
/* First octet of 5 octet sequence.
*
* This is illegal because the encoded codepoint must be either
* (a) not the shortest form or
* (b) outside the Unicode range of 0-0x10FFFF.
* Rather than trying to resynchronize, we will carry on until the end
* of the sequence and let the later error handling code catch it.
*/
$mUcs4 = ($in);
$mUcs4 = ($mUcs4 & 0x03) << 24;
$mState = 4;
$mBytes = 5;
} else if (0xFC == (0xFE & ($in))) {
// First octet of 6 octet sequence, see comments for 5 octet sequence.
$mUcs4 = ($in);
$mUcs4 = ($mUcs4 & 1) << 30;
$mState = 5;
$mBytes = 6;
} else {
/* Current octet is neither in the US-ASCII range nor a legal first
* octet of a multi-octet sequence.
*/
trigger_error('utf8_to_unicode: Illegal sequence identifier ' . 'in UTF-8 at byte ' . $i, E_USER_WARNING);
return false;
}
} else {
// When mState is non-zero, we expect a continuation of the multi-octet
// sequence
if (0x80 == (0xC0 & ($in))) {
// Legal continuation.
$shift = ($mState - 1) * 6;
$tmp = $in;
$tmp = ($tmp & 0x0000003F) << $shift;
$mUcs4 |= $tmp;
/**
* End of the multi-octet sequence. mUcs4 now contains the final
* Unicode codepoint to be output
*/
if (0 == --$mState) {
/*
* Check for illegal sequences and codepoints.
*/
// From Unicode 3.1, non-shortest form is illegal
if (((2 == $mBytes) && ($mUcs4 < 0x0080)) ||
((3 == $mBytes) && ($mUcs4 < 0x0800)) ||
((4 == $mBytes) && ($mUcs4 < 0x10000)) ||
(4 < $mBytes) ||
// From Unicode 3.2, surrogate characters are illegal
(($mUcs4 & 0xFFFFF800) == 0xD800) ||
// Codepoints outside the Unicode range are illegal
($mUcs4 > 0x10FFFF)) {
trigger_error('utf8_to_unicode: Illegal sequence or codepoint in UTF-8 at byte ' . $i, E_USER_WARNING);
return false;
}
if (0xFEFF != $mUcs4) {
// BOM is legal but we don't want to output it
$out[] = $mUcs4;
}
//initialize UTF8 cache
$mState = 0;
$mUcs4 = 0;
$mBytes = 1;
}
} else {
/**
*((0xC0 & (*in) != 0x80) && (mState != 0))
* Incomplete multi-octet sequence.
*/
trigger_error('utf8_to_unicode: Incomplete multi-octet sequence in UTF-8 at byte ' . $i, E_USER_WARNING);
return false;
}
}
}
return $out;
}
function utf8_from_unicode($data) {
ob_start();
foreach (array_keys($data) as $key) {
if (($data[$key] >= 0) && ($data[$key] <= 0x007f)) {
echo chr($data[$key]);
} elseif ($data[$key] <= 0x07ff) {
echo chr(0xc0 | ($data[$key] >> 6));
echo chr(0x80 | ($data[$key] & 0x003f));
} elseif ($data[$key] == 0xFEFF) {
// nop -- zap the BOM
# Test for illegal surrogates
} elseif ($data[$key] >= 0xD800 && $data[$key] <= 0xDFFF) {
trigger_error('utf8_from_unicode: Illegal surrogate at index: ' . $key . ', value: ' . $data[$key], E_USER_WARNING);
return false;
} elseif ($data[$key] <= 0xffff) {
echo chr(0xe0 | ($data[$key] >> 12));
echo chr(0x80 | (($data[$key] >> 6) & 0x003f));
echo chr(0x80 | ($data[$key] & 0x003f));
} elseif ($data[$key] <= 0x10ffff) {
echo chr(0xf0 | ($data[$key] >> 18));
echo chr(0x80 | (($data[$key] >> 12) & 0x3f));
echo chr(0x80 | (($data[$key] >> 6) & 0x3f));
echo chr(0x80 | ($data[$key] & 0x3f));
} else {
trigger_error('utf8_from_unicode: Codepoint out of Unicode range at index: ' . $key . ', value: ' . $data[$key], E_USER_WARNING);
return false;
}
}
$result = ob_get_contents();
ob_end_clean();
return $result;
}
?>