/core/helpers/utf8.php
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- <?php
- /**
- * UTF8 helper functions
- *
- * @license LGPL 2.1 (http://www.gnu.org/copyleft/lesser.html)
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- /**
- * check for mb_string support
- */
- if(!defined('UTF8_MBSTRING')){
- if(function_exists('mb_substr') && !defined('UTF8_NOMBSTRING')){
- define('UTF8_MBSTRING',1);
- }else{
- define('UTF8_MBSTRING',0);
- }
- }
- if(UTF8_MBSTRING){ mb_internal_encoding('UTF-8'); }
- if(!function_exists('utf8_isASCII')){
- /**
- * Checks if a string contains 7bit ASCII only
- *
- * @author Andreas Haerter <andreas.haerter@dev.mail-node.com>
- */
- function utf8_isASCII($str){
- return (preg_match('/(?:[^\x00-\x7F])/', $str) !== 1);
- }
- }
- if(!function_exists('utf8_strip')){
- /**
- * Strips all highbyte chars
- *
- * Returns a pure ASCII7 string
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- function utf8_strip($str){
- $ascii = '';
- $len = strlen($str);
- for($i=0; $i<$len; $i++){
- if(ord($str{$i}) <128){
- $ascii .= $str{$i};
- }
- }
- return $ascii;
- }
- }
- if(!function_exists('utf8_check')){
- /**
- * Tries to detect if a string is in Unicode encoding
- *
- * @author <bmorel@ssi.fr>
- * @link http://www.php.net/manual/en/function.utf8-encode.php
- */
- function utf8_check($Str) {
- $len = strlen($Str);
- for ($i=0; $i<$len; $i++) {
- $b = ord($Str[$i]);
- if ($b < 0x80) continue; # 0bbbbbbb
- elseif (($b & 0xE0) == 0xC0) $n=1; # 110bbbbb
- elseif (($b & 0xF0) == 0xE0) $n=2; # 1110bbbb
- elseif (($b & 0xF8) == 0xF0) $n=3; # 11110bbb
- elseif (($b & 0xFC) == 0xF8) $n=4; # 111110bb
- elseif (($b & 0xFE) == 0xFC) $n=5; # 1111110b
- else return false; # Does not match any model
- for ($j=0; $j<$n; $j++) { # n bytes matching 10bbbbbb follow ?
- if ((++$i == $len) || ((ord($Str[$i]) & 0xC0) != 0x80))
- return false;
- }
- }
- return true;
- }
- }
- if(!function_exists('utf8_strlen')){
- /**
- * Unicode aware replacement for strlen()
- *
- * utf8_decode() converts characters that are not in ISO-8859-1
- * to '?', which, for the purpose of counting, is alright - It's
- * even faster than mb_strlen.
- *
- * @author <chernyshevsky at hotmail dot com>
- * @see strlen()
- * @see utf8_decode()
- */
- function utf8_strlen($string){
- return strlen(utf8_decode($string));
- }
- }
- if(!function_exists('utf8_substr')){
- /**
- * UTF-8 aware alternative to substr
- *
- * Return part of a string given character offset (and optionally length)
- *
- * @author Harry Fuecks <hfuecks@gmail.com>
- * @author Chris Smith <chris@jalakai.co.uk>
- * @param string
- * @param integer number of UTF-8 characters offset (from left)
- * @param integer (optional) length in UTF-8 characters from offset
- * @return mixed string or false if failure
- */
- function utf8_substr($str, $offset, $length = null) {
- if(UTF8_MBSTRING){
- if( $length === null ){
- return mb_substr($str, $offset);
- }else{
- return mb_substr($str, $offset, $length);
- }
- }
- /*
- * Notes:
- *
- * no mb string support, so we'll use pcre regex's with 'u' flag
- * pcre only supports repetitions of less than 65536, in order to accept up to MAXINT values for
- * offset and length, we'll repeat a group of 65535 characters when needed (ok, up to MAXINT-65536)
- *
- * substr documentation states false can be returned in some cases (e.g. offset > string length)
- * mb_substr never returns false, it will return an empty string instead.
- *
- * calculating the number of characters in the string is a relatively expensive operation, so
- * we only carry it out when necessary. It isn't necessary for +ve offsets and no specified length
- */
- // cast parameters to appropriate types to avoid multiple notices/warnings
- $str = (string)$str; // generates E_NOTICE for PHP4 objects, but not PHP5 objects
- $offset = (int)$offset;
- if (!is_null($length)) $length = (int)$length;
- // handle trivial cases
- if ($length === 0) return '';
- if ($offset < 0 && $length < 0 && $length < $offset) return '';
- $offset_pattern = '';
- $length_pattern = '';
- // normalise -ve offsets (we could use a tail anchored pattern, but they are horribly slow!)
- if ($offset < 0) {
- $strlen = strlen(utf8_decode($str)); // see notes
- $offset = $strlen + $offset;
- if ($offset < 0) $offset = 0;
- }
- // establish a pattern for offset, a non-captured group equal in length to offset
- if ($offset > 0) {
- $Ox = (int)($offset/65535);
- $Oy = $offset%65535;
- if ($Ox) $offset_pattern = '(?:.{65535}){'.$Ox.'}';
- $offset_pattern = '^(?:'.$offset_pattern.'.{'.$Oy.'})';
- } else {
- $offset_pattern = '^'; // offset == 0; just anchor the pattern
- }
- // establish a pattern for length
- if (is_null($length)) {
- $length_pattern = '(.*)$'; // the rest of the string
- } else {
- if (!isset($strlen)) $strlen = strlen(utf8_decode($str)); // see notes
- if ($offset > $strlen) return ''; // another trivial case
- if ($length > 0) {
- $length = min($strlen-$offset, $length); // reduce any length that would go passed the end of the string
- $Lx = (int)($length/65535);
- $Ly = $length%65535;
- // +ve length requires ... a captured group of length characters
- if ($Lx) $length_pattern = '(?:.{65535}){'.$Lx.'}';
- $length_pattern = '('.$length_pattern.'.{'.$Ly.'})';
- } else if ($length < 0) {
- if ($length < ($offset - $strlen)) return '';
- $Lx = (int)((-$length)/65535);
- $Ly = (-$length)%65535;
- // -ve length requires ... capture everything except a group of -length characters
- // anchored at the tail-end of the string
- if ($Lx) $length_pattern = '(?:.{65535}){'.$Lx.'}';
- $length_pattern = '(.*)(?:'.$length_pattern.'.{'.$Ly.'})$';
- }
- }
- if (!preg_match('#'.$offset_pattern.$length_pattern.'#us',$str,$match)) return '';
- return $match[1];
- }
- }
- if(!function_exists('utf8_substr_replace')){
- /**
- * Unicode aware replacement for substr_replace()
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- * @see substr_replace()
- */
- function utf8_substr_replace($string, $replacement, $start , $length=0 ){
- $ret = '';
- if($start>0) $ret .= utf8_substr($string, 0, $start);
- $ret .= $replacement;
- $ret .= utf8_substr($string, $start+$length);
- return $ret;
- }
- }
- if(!function_exists('utf8_ltrim')){
- /**
- * Unicode aware replacement for ltrim()
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- * @see ltrim()
- * @return string
- */
- function utf8_ltrim($str,$charlist=''){
- if($charlist == '') return ltrim($str);
- //quote charlist for use in a characterclass
- $charlist = preg_replace('!([\\\\\\-\\]\\[/])!','\\\${1}',$charlist);
- return preg_replace('/^['.$charlist.']+/u','',$str);
- }
- }
- if(!function_exists('utf8_rtrim')){
- /**
- * Unicode aware replacement for rtrim()
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- * @see rtrim()
- * @return string
- */
- function utf8_rtrim($str,$charlist=''){
- if($charlist == '') return rtrim($str);
- //quote charlist for use in a characterclass
- $charlist = preg_replace('!([\\\\\\-\\]\\[/])!','\\\${1}',$charlist);
- return preg_replace('/['.$charlist.']+$/u','',$str);
- }
- }
- if(!function_exists('utf8_trim')){
- /**
- * Unicode aware replacement for trim()
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- * @see trim()
- * @return string
- */
- function utf8_trim($str,$charlist='') {
- if($charlist == '') return trim($str);
- return utf8_ltrim(utf8_rtrim($str,$charlist),$charlist);
- }
- }
- if(!function_exists('utf8_strtolower')){
- /**
- * This is a unicode aware replacement for strtolower()
- *
- * Uses mb_string extension if available
- *
- * @author Leo Feyer <leo@typolight.org>
- * @see strtolower()
- * @see utf8_strtoupper()
- */
- function utf8_strtolower($string){
- if(UTF8_MBSTRING) return mb_strtolower($string,'utf-8');
- global $UTF8_UPPER_TO_LOWER;
- return strtr($string,$UTF8_UPPER_TO_LOWER);
- }
- }
- if(!function_exists('utf8_strtoupper')){
- /**
- * This is a unicode aware replacement for strtoupper()
- *
- * Uses mb_string extension if available
- *
- * @author Leo Feyer <leo@typolight.org>
- * @see strtoupper()
- * @see utf8_strtoupper()
- */
- function utf8_strtoupper($string){
- if(UTF8_MBSTRING) return mb_strtoupper($string,'utf-8');
- global $UTF8_LOWER_TO_UPPER;
- return strtr($string,$UTF8_LOWER_TO_UPPER);
- }
- }
- if(!function_exists('utf8_ucfirst')){
- /**
- * UTF-8 aware alternative to ucfirst
- * Make a string's first character uppercase
- *
- * @author Harry Fuecks
- * @param string
- * @return string with first character as upper case (if applicable)
- */
- function utf8_ucfirst($str){
- switch ( utf8_strlen($str) ) {
- case 0:
- return '';
- case 1:
- return utf8_strtoupper($str);
- default:
- preg_match('/^(.{1})(.*)$/us', $str, $matches);
- return utf8_strtoupper($matches[1]).$matches[2];
- }
- }
- }
- if(!function_exists('utf8_ucwords')){
- /**
- * UTF-8 aware alternative to ucwords
- * Uppercase the first character of each word in a string
- *
- * @author Harry Fuecks
- * @param string
- * @return string with first char of each word uppercase
- * @see http://www.php.net/ucwords
- */
- function utf8_ucwords($str) {
- // Note: [\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://www.php.net/ucwords
- $pattern = '/(^|([\x0c\x09\x0b\x0a\x0d\x20]+))([^\x0c\x09\x0b\x0a\x0d\x20]{1})[^\x0c\x09\x0b\x0a\x0d\x20]*/u';
- return preg_replace_callback($pattern, 'utf8_ucwords_callback',$str);
- }
- /**
- * Callback function for preg_replace_callback call in utf8_ucwords
- * You don't need to call this yourself
- *
- * @author Harry Fuecks
- * @param array of matches corresponding to a single word
- * @return string with first char of the word in uppercase
- * @see utf8_ucwords
- * @see utf8_strtoupper
- */
- function utf8_ucwords_callback($matches) {
- $leadingws = $matches[2];
- $ucfirst = utf8_strtoupper($matches[3]);
- $ucword = utf8_substr_replace(ltrim($matches[0]),$ucfirst,0,1);
- return $leadingws . $ucword;
- }
- }
- if(!function_exists('utf8_deaccent')){
- /**
- * Replace accented UTF-8 characters by unaccented ASCII-7 equivalents
- *
- * Use the optional parameter to just deaccent lower ($case = -1) or upper ($case = 1)
- * letters. Default is to deaccent both cases ($case = 0)
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- function utf8_deaccent($string,$case=0){
- if($case <= 0){
- global $UTF8_LOWER_ACCENTS;
- $string = strtr($string,$UTF8_LOWER_ACCENTS);
- }
- if($case >= 0){
- global $UTF8_UPPER_ACCENTS;
- $string = strtr($string,$UTF8_UPPER_ACCENTS);
- }
- return $string;
- }
- }
- if(!function_exists('utf8_romanize')){
- /**
- * Romanize a non-latin string
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- function utf8_romanize($string){
- if(utf8_isASCII($string)) return $string; //nothing to do
- global $UTF8_ROMANIZATION;
- return strtr($string,$UTF8_ROMANIZATION);
- }
- }
- if(!function_exists('utf8_stripspecials')){
- /**
- * Removes special characters (nonalphanumeric) from a UTF-8 string
- *
- * This function adds the controlchars 0x00 to 0x19 to the array of
- * stripped chars (they are not included in $UTF8_SPECIAL_CHARS)
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- * @param string $string The UTF8 string to strip of special chars
- * @param string $repl Replace special with this string
- * @param string $additional Additional chars to strip (used in regexp char class)
- */
- function utf8_stripspecials($string,$repl='',$additional=''){
- global $UTF8_SPECIAL_CHARS;
- global $UTF8_SPECIAL_CHARS2;
- static $specials = null;
- if(is_null($specials)){
- #$specials = preg_quote(unicode_to_utf8($UTF8_SPECIAL_CHARS), '/');
- $specials = preg_quote($UTF8_SPECIAL_CHARS2, '/');
- }
- return preg_replace('/['.$additional.'\x00-\x19'.$specials.']/u',$repl,$string);
- }
- }
- if(!function_exists('utf8_strpos')){
- /**
- * This is an Unicode aware replacement for strpos
- *
- * @author Leo Feyer <leo@typolight.org>
- * @see strpos()
- * @param string
- * @param string
- * @param integer
- * @return integer
- */
- function utf8_strpos($haystack, $needle, $offset=0){
- $comp = 0;
- $length = null;
- while (is_null($length) || $length < $offset) {
- $pos = strpos($haystack, $needle, $offset + $comp);
- if ($pos === false)
- return false;
- $length = utf8_strlen(substr($haystack, 0, $pos));
- if ($length < $offset)
- $comp = $pos - $length;
- }
- return $length;
- }
- }
- if(!function_exists('utf8_tohtml')){
- /**
- * Encodes UTF-8 characters to HTML entities
- *
- * @author Tom N Harris <tnharris@whoopdedo.org>
- * @author <vpribish at shopping dot com>
- * @link http://www.php.net/manual/en/function.utf8-decode.php
- */
- function utf8_tohtml ($str) {
- $ret = '';
- foreach (utf8_to_unicode($str) as $cp) {
- if ($cp < 0x80)
- $ret .= chr($cp);
- elseif ($cp < 0x100)
- $ret .= "&#$cp;";
- else
- $ret .= '&#x'.dechex($cp).';';
- }
- return $ret;
- }
- }
- if(!function_exists('utf8_unhtml')){
- /**
- * Decodes HTML entities to UTF-8 characters
- *
- * Convert any &#..; entity to a codepoint,
- * The entities flag defaults to only decoding numeric entities.
- * Pass HTML_ENTITIES and named entities, including & < etc.
- * are handled as well. Avoids the problem that would occur if you
- * had to decode "&#38;&amp;#38;"
- *
- * unhtmlspecialchars(utf8_unhtml($s)) -> "&&"
- * utf8_unhtml(unhtmlspecialchars($s)) -> "&&#38;"
- * what it should be -> "&&#38;"
- *
- * @author Tom N Harris <tnharris@whoopdedo.org>
- * @param string $str UTF-8 encoded string
- * @param boolean $entities Flag controlling decoding of named entities.
- * @return UTF-8 encoded string with numeric (and named) entities replaced.
- */
- function utf8_unhtml($str, $entities=null) {
- static $decoder = null;
- if (is_null($decoder))
- $decoder = new utf8_entity_decoder();
- if (is_null($entities))
- return preg_replace_callback('/(&#([Xx])?([0-9A-Za-z]+);)/m',
- 'utf8_decode_numeric', $str);
- else
- return preg_replace_callback('/&(#)?([Xx])?([0-9A-Za-z]+);/m',
- array(&$decoder, 'decode'), $str);
- }
- }
- if(!function_exists('utf8_decode_numeric')){
- function utf8_decode_numeric($ent) {
- switch ($ent[2]) {
- case 'X':
- case 'x':
- $cp = hexdec($ent[3]);
- break;
- default:
- $cp = intval($ent[3]);
- break;
- }
- return unicode_to_utf8(array($cp));
- }
- }
- if(!class_exists('utf8_entity_decoder')){
- class utf8_entity_decoder {
- var $table;
- function utf8_entity_decoder() {
- $table = get_html_translation_table(HTML_ENTITIES);
- $table = array_flip($table);
- $this->table = array_map(array(&$this,'makeutf8'), $table);
- }
- function makeutf8($c) {
- return unicode_to_utf8(array(ord($c)));
- }
- function decode($ent) {
- if ($ent[1] == '#') {
- return utf8_decode_numeric($ent);
- } elseif (array_key_exists($ent[0],$this->table)) {
- return $this->table[$ent[0]];
- } else {
- return $ent[0];
- }
- }
- }
- }
- if(!function_exists('utf8_to_unicode')){
- /**
- * Takes an UTF-8 string and returns an array of ints representing the
- * Unicode characters. Astral planes are supported ie. the ints in the
- * output can be > 0xFFFF. Occurrances of the BOM are ignored. Surrogates
- * are not allowed.
- *
- * If $strict is set to true the function returns false if the input
- * string isn't a valid UTF-8 octet sequence and raises a PHP error at
- * level E_USER_WARNING
- *
- * Note: this function has been modified slightly in this library to
- * trigger errors on encountering bad bytes
- *
- * @author <hsivonen@iki.fi>
- * @author Harry Fuecks <hfuecks@gmail.com>
- * @param string UTF-8 encoded string
- * @param boolean Check for invalid sequences?
- * @return mixed array of unicode code points or false if UTF-8 invalid
- * @see unicode_to_utf8
- * @link http://hsivonen.iki.fi/php-utf8/
- * @link http://sourceforge.net/projects/phputf8/
- */
- function utf8_to_unicode($str,$strict=false) {
- $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;
- $mBytes = 1;
- } else if (0xC0 == (0xE0 & ($in))) {
- // First octet of 2 octet sequence
- $mUcs4 = ($in);
- $mUcs4 = ($mUcs4 & 0x1F) << 6;
- $mState = 1;
- $mBytes = 2;
- } else if (0xE0 == (0xF0 & ($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;
- $mBytes = 6;
- } elseif($strict) {
- /* 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
- ($mUcs4 > 0x10FFFF)) {
- if($strict){
- 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;
- $mBytes = 1;
- }
- } elseif($strict) {
- /**
- *((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;
- }
- }
- if(!function_exists('unicode_to_utf8')){
- /**
- * Takes an array of ints representing the Unicode characters and returns
- * a UTF-8 string. Astral planes are supported ie. the ints in the
- * input can be > 0xFFFF. Occurrances of the BOM are ignored. Surrogates
- * are not allowed.
- *
- * If $strict is set to true the function returns false if the input
- * array contains ints that represent surrogates or are outside the
- * Unicode range and raises a PHP error at level E_USER_WARNING
- *
- * Note: this function has been modified slightly in this library to use
- * output buffering to concatenate the UTF-8 string (faster) as well as
- * reference the array by it's keys
- *
- * @param array of unicode code points representing a string
- * @param boolean Check for invalid sequences?
- * @return mixed UTF-8 string or false if array contains invalid code points
- * @author <hsivonen@iki.fi>
- * @author Harry Fuecks <hfuecks@gmail.com>
- * @see utf8_to_unicode
- * @link http://hsivonen.iki.fi/php-utf8/
- * @link http://sourceforge.net/projects/phputf8/
- */
- function unicode_to_utf8($arr,$strict=false) {
- if (!is_array($arr)) return '';
- ob_start();
- foreach (array_keys($arr) as $k) {
- if ( ($arr[$k] >= 0) && ($arr[$k] <= 0x007f) ) {
- # ASCII range (including control chars)
- echo chr($arr[$k]);
- } else if ($arr[$k] <= 0x07ff) {
- # 2 byte sequence
- echo chr(0xc0 | ($arr[$k] >> 6));
- echo chr(0x80 | ($arr[$k] & 0x003f));
- } else if($arr[$k] == 0xFEFF) {
- # Byte order mark (skip)
- // nop -- zap the BOM
- } else if ($arr[$k] >= 0xD800 && $arr[$k] <= 0xDFFF) {
- # Test for illegal surrogates
- // found a surrogate
- if($strict){
- trigger_error(
- 'unicode_to_utf8: Illegal surrogate '.
- 'at index: '.$k.', value: '.$arr[$k],
- E_USER_WARNING
- );
- return false;
- }
- } else if ($arr[$k] <= 0xffff) {
- # 3 byte sequence
- echo chr(0xe0 | ($arr[$k] >> 12));
- echo chr(0x80 | (($arr[$k] >> 6) & 0x003f));
- echo chr(0x80 | ($arr[$k] & 0x003f));
- } else if ($arr[$k] <= 0x10ffff) {
- # 4 byte sequence
- echo chr(0xf0 | ($arr[$k] >> 18));
- echo chr(0x80 | (($arr[$k] >> 12) & 0x3f));
- echo chr(0x80 | (($arr[$k] >> 6) & 0x3f));
- echo chr(0x80 | ($arr[$k] & 0x3f));
- } elseif($strict) {
- trigger_error(
- 'unicode_to_utf8: Codepoint out of Unicode range '.
- 'at index: '.$k.', value: '.$arr[$k],
- E_USER_WARNING
- );
- // out of range
- return false;
- }
- }
- $result = ob_get_contents();
- ob_end_clean();
- return $result;
- }
- }
- if(!function_exists('utf8_to_utf16be')){
- /**
- * UTF-8 to UTF-16BE conversion.
- *
- * Maybe really UCS-2 without mb_string due to utf8_to_unicode limits
- */
- function utf8_to_utf16be(&$str, $bom = false) {
- $out = $bom ? "\xFE\xFF" : '';
- if(UTF8_MBSTRING) return $out.mb_convert_encoding($str,'UTF-16BE','UTF-8');
- $uni = utf8_to_unicode($str);
- foreach($uni as $cp){
- $out .= pack('n',$cp);
- }
- return $out;
- }
- }
- if(!function_exists('utf16be_to_utf8')){
- /**
- * UTF-8 to UTF-16BE conversion.
- *
- * Maybe really UCS-2 without mb_string due to utf8_to_unicode limits
- */
- function utf16be_to_utf8(&$str) {
- $uni = unpack('n*',$str);
- return unicode_to_utf8($uni);
- }
- }
- if(!function_exists('utf8_bad_replace')){
- /**
- * Replace bad bytes with an alternative character
- *
- * ASCII character is recommended for replacement char
- *
- * PCRE Pattern to locate bad bytes in a UTF-8 string
- * Comes from W3 FAQ: Multilingual Forms
- * Note: modified to include full ASCII range including control chars
- *
- * @author Harry Fuecks <hfuecks@gmail.com>
- * @see http://www.w3.org/International/questions/qa-forms-utf-8
- * @param string to search
- * @param string to replace bad bytes with (defaults to '?') - use ASCII
- * @return string
- */
- function utf8_bad_replace($str, $replace = '') {
- $UTF8_BAD =
- '([\x00-\x7F]'. # ASCII (including control chars)
- '|[\xC2-\xDF][\x80-\xBF]'. # non-overlong 2-byte
- '|\xE0[\xA0-\xBF][\x80-\xBF]'. # excluding overlongs
- '|[\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}'. # straight 3-byte
- '|\xED[\x80-\x9F][\x80-\xBF]'. # excluding surrogates
- '|\xF0[\x90-\xBF][\x80-\xBF]{2}'. # planes 1-3
- '|[\xF1-\xF3][\x80-\xBF]{3}'. # planes 4-15
- '|\xF4[\x80-\x8F][\x80-\xBF]{2}'. # plane 16
- '|(.{1}))'; # invalid byte
- ob_start();
- while (preg_match('/'.$UTF8_BAD.'/S', $str, $matches)) {
- if ( !isset($matches[2])) {
- echo $matches[0];
- } else {
- echo $replace;
- }
- $str = substr($str,strlen($matches[0]));
- }
- $result = ob_get_contents();
- ob_end_clean();
- return $result;
- }
- }
- if(!function_exists('utf8_correctIdx')){
- /**
- * adjust a byte index into a utf8 string to a utf8 character boundary
- *
- * @param $str string utf8 character string
- * @param $i int byte index into $str
- * @param $next bool direction to search for boundary,
- * false = up (current character)
- * true = down (next character)
- *
- * @return int byte index into $str now pointing to a utf8 character boundary
- *
- * @author chris smith <chris@jalakai.co.uk>
- */
- function utf8_correctIdx(&$str,$i,$next=false) {
- if ($i <= 0) return 0;
- $limit = strlen($str);
- if ($i>=$limit) return $limit;
- if ($next) {
- while (($i<$limit) && ((ord($str[$i]) & 0xC0) == 0x80)) $i++;
- } else {
- while ($i && ((ord($str[$i]) & 0xC0) == 0x80)) $i--;
- }
- return $i;
- }
- }
- // only needed if no mb_string available
- if(!UTF8_MBSTRING){
- /**
- * UTF-8 Case lookup table
- *
- * This lookuptable defines the upper case letters to their correspponding
- * lower case letter in UTF-8
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- global $UTF8_LOWER_TO_UPPER;
- if(empty($UTF8_LOWER_TO_UPPER)) $UTF8_LOWER_TO_UPPER = array(
- "??š"=>"???","??™"=>"??","??˜"=>"??¸","??—"=>"???","??–"=>"???","??•"=>"???","??”"=>"??´","??“"=>"???","??’"=>"???","??‘"=>"???",
- "???"=>"??°","???"=>"???","??Ž"=>"??","???"=>"??","??Œ"=>"???","??‹"=>"???","??Š"=>"???","??‰"=>"??","??ˆ"=>"??¨","??‡"=>"??§",
- "??†"=>"???","??…"=>"???","??„"=>"??¤","??ƒ"=>"???","??‚"=>"???","?? "=>"???","á??"=>"á??","á??"=>"á??","á??"=>"á?","á?‘"=>"á?™",
- "á??"=>"á?˜","á?ƒ"=>"á?Œ","á"=>"Ι","á?"=>"á?","á?"=>"á","á°"=>"á¸","á§"=>"á?","á?"=>"á","á?"=>"á","á¤"=>"á?",
- "á?"=>"á?","á?"=>"á?","á?"=>"á","á—"=>"á&#x;","á–"=>"áž","á•"=>"á?","á”"=>"áœ","á“"=>"á›","á’"=>"áš","á‘"=>"á™",
- "á?"=>"á˜","á‡"=>"á?","á†"=>"áŽ","á…"=>"á?","á„"=>"áŒ","áƒ"=>"á‹","á‚"=>"áŠ","á "=>"á‰","á€"=>"áˆ","á??"=>"á??",
- "á??"=>"á??","á??"=>"á??","á??"=>"á??","á?"=>"á?","á?¸"=>"á?¸","á??"=>"á?›","á??"=>"á?š","á??"=>"á?‹","á?´"=>"á?Š","á??"=>"á?‰",
- "á??"=>"á?ˆ","á??"=>"á?","á?°"=>"á?","á?§"=>"á??","á??"=>"á?","á??"=>"á?","á?¤"=>"á??","á??"=>"á??","á??"=>"á??","á??"=>"á?",
- "á?—"=>"á?&#x;","á?•"=>"á??","á?“"=>"á?›","á?‘"=>"á?™","á?…"=>"á??","á?„"=>"á?Œ","á?ƒ"=>"á?‹","á?‚"=>"á?Š","á? "=>"á?‰","á?€"=>"á?ˆ",
- "á??"=>"á??","á??"=>"á?","á??"=>"á??","á?´"=>"á??","á??"=>"á??","á??"=>"á??","á??"=>"á?","á?°"=>"á?¸","á?§"=>"á??","á??"=>"á?",
- "á??"=>"á?","á?¤"=>"á??","á??"=>"á??","á??"=>"á??","á??"=>"á?","á?•"=>"á??","á?”"=>"á?œ","á?“"=>"á?›","á?’"=>"á?š","á?‘"=>"á?™",
- "á??"=>"á?˜","á?‡"=>"á??","á?†"=>"á?Ž","á?…"=>"á??","á?„"=>"á?Œ","á?ƒ"=>"á?‹","á?‚"=>"á?Š","á? "=>"á?‰","á?€"=>"á?ˆ","á?"=>"á?¸",
- "á??"=>"á??","á??"=>"á?´","á??"=>"á??","á??"=>"á?°","á??"=>"á?","á?"=>"á??","á??"=>"á??","á?"=>"á?¨","á?§"=>"á??","á??"=>"á?¤",
- "á??"=>"á??","á??"=>"á? ","á?&#x;"=>"á?ž","á??"=>"á?œ","á?›"=>"á?š","á?™"=>"á?˜","á?—"=>"á?–","á?•"=>"á?”","á?“"=>"á?’","á?‘"=>"á??",
- "á??"=>"á?Ž","á??"=>"á?Œ","á?‹"=>"á?Š","á?‰"=>"á?ˆ","á?‡"=>"á?†","á?…"=>"á?„","á?ƒ"=>"á?‚","á? "=>"á?€","á??"=>"á?","á??"=>"á??",
- "á??"=>"á??","á?"=>"á?¸","á??"=>"á??","á??"=>"á?´","á??"=>"á??","á??"=>"á?°","á??"=>"á?","á?"=>"á??","á??"=>"á??","á?"=>"á?¨",
- "á?§"=>"á??","á??"=>"á?¤","á??"=>"á??","á??"=>"á? ","á?›"=>"á ","á?•"=>"á?”","á?“"=>"á?’","á?‘"=>"á??","á??"=>"á?Ž","á??"=>"á?Œ",
- "á?‹"=>"á?Š","á?‰"=>"á?ˆ","á?‡"=>"á?†","á?…"=>"á?„","á?ƒ"=>"á?‚","á? "=>"á?€","á?"=>"á","á?"=>"á?","á?"=>"á?","á"=>"á¸",
- "á?"=>"á?","á?"=>"á´","á?"=>"á?","á?"=>"á°","á?"=>"á","á"=>"á?","á?"=>"á?","á"=>"á¨","á§"=>"á?","á?"=>"á¤",
- "á?"=>"á?","á?"=>"á ","á&#x;"=>"áž","á?"=>"áœ","á›"=>"áš","á™"=>"á˜","á—"=>"á–","á•"=>"á”","á“"=>"á’","á‘"=>"á?",
- "á?"=>"áŽ","á?"=>"áŒ","á‹"=>"áŠ","á‰"=>"áˆ","á‡"=>"á†","á…"=>"á„","áƒ"=>"á‚","á "=>"á€","á¸?"=>"á¸","á¸?"=>"á¸?",
- "á¸?"=>"á¸?","á¸"=>"Ḹ","á¸?"=>"á¸?","á¸?"=>"Ḵ","á¸?"=>"á¸?","á¸?"=>"Ḱ","á¸?"=>"á¸","á¸"=>"á¸?","á¸?"=>"á¸?","á¸"=>"Ḩ",
- "ḧ"=>"á¸?","á¸?"=>"Ḥ","á¸?"=>"á¸?","á¸?"=>"Ḡ","á¸&#x;"=>"Ḟ","á¸?"=>"Ḝ","ḛ"=>"Ḛ","ḙ"=>"Ḙ","ḗ"=>"Ḗ","ḕ"=>"Ḕ",
- "ḓ"=>"Ḓ","ḑ"=>"�","�"=>"Ḏ","�"=>"Ḍ","ḋ"=>"Ḋ","ḉ"=>"Ḉ","ḇ"=>"Ḇ","ḅ"=>"Ḅ","ḃ"=>"Ḃ","Ḡ"=>"Ḁ",
- "Ö†"=>"?–","Ö…"=>"?•","Ö„"=>"?”","Öƒ"=>"?“","Ö‚"=>"?’","Ö "=>"?‘","Ö€"=>"??","??"=>"??","?"=>"?Ž","??"=>"??",
- "??"=>"?Œ","??"=>"?‹","??"=>"?Š","?"=>"?‰","?¸"=>"?ˆ","??"=>"?‡","??"=>"?†","??"=>"?…","?´"=>"?„","??"=>"?ƒ",
- "??"=>"?‚","??"=>"? ","?°"=>"?€","??"=>"Ô?","?"=>"Ô","?"=>"Ô?","??"=>"Ô?","??"=>"Ô?","??"=>"Ô?","?"=>"Ô",
- "?¨"=>"Ô¸","?§"=>"Ô?","??"=>"Ô?","??"=>"Ô?","?¤"=>"Ô´","??"=>"Ô?","??"=>"Ô?","??"=>"Ô?","Ô?"=>"ÔŽ","Ô?"=>"ÔŒ",
- "Ô‹"=>"ÔŠ","Ô‰"=>"Ôˆ","Ô‡"=>"Ô†","Ô…"=>"Ô„","Ôƒ"=>"Ô‚","Ô "=>"Ô€","Ó"=>"Ó¸","Ó?"=>"Ó´","Ó?"=>"Ó?","Ó?"=>"Ó°",
- "Ó?"=>"Ó","Ó"=>"Ó?","Ó?"=>"Ó?","Ó"=>"Ó¨","Ó§"=>"Ó?","Ó?"=>"Ó¤","Ó?"=>"Ó?","Ó?"=>"Ó ","Ó&#x;"=>"Óž","Ó?"=>"Óœ",
- "Ó›"=>"Óš","Ó™"=>"Ó˜","Ó—"=>"Ó–","Ó•"=>"Ó”","Ó“"=>"Ó’","Ó‘"=>"Ó?","ÓŽ"=>"Ó?","ÓŒ"=>"Ó‹","ÓŠ"=>"Ó‰","Óˆ"=>"Ó‡",
- "Ó†"=>"Ó…","Ó„"=>"Óƒ","Ó‚"=>"Ó ","??"=>"?","??"=>"??","??"=>"??","?"=>"?¸","??"=>"??","??"=>"?´","??"=>"??",
- "??"=>"?°","??"=>"?","?"=>"??","??"=>"??","?"=>"?¨","?§"=>"??","??"=>"?¤","??"=>"??","??"=>"? ","?&#x;"=>"?ž",
- "??"=>"?œ","?›"=>"?š","?™"=>"?˜","?—"=>"?–","?•"=>"?”","?“"=>"?’","?‘"=>"??","??"=>"?Ž","??"=>"?Œ","?‹"=>"?Š",
- "? "=>"?€","??"=>"?","??"=>"??","??"=>"??","?"=>"?¸","??"=>"??","??"=>"?´","??"=>"??","??"=>"?°","??"=>"?",
- "?"=>"??","??"=>"??","?"=>"?¨","?§"=>"??","??"=>"?¤","??"=>"??","??"=>"? ","?&#x;"=>"??","?ž"=>"?Ž","??"=>"??",
- "?œ"=>"?Œ","?›"=>"?‹","?š"=>"?Š","?™"=>"?‰","?˜"=>"?ˆ","?—"=>"?‡","?–"=>"?†","?•"=>"?…","?”"=>"?„","?“"=>"?ƒ",
- "?’"=>"?‚","?‘"=>"? ","??"=>"?€","??"=>"??","?Ž"=>"?","??"=>"?","?Œ"=>"??","?‹"=>"??","?Š"=>"??","?‰"=>"?",
- "?ˆ"=>"?¨","?‡"=>"?§","?†"=>"??","?…"=>"??","?„"=>"?¤","?ƒ"=>"??","?‚"=>"??","? "=>"??","?€"=>"? ","??"=>"?&#x;",
- "?"=>"?ž","??"=>"??","??"=>"?œ","??"=>"?›","??"=>"?š","?"=>"?™","?¸"=>"?˜","??"=>"?—","??"=>"?–","??"=>"?•",
- "?´"=>"?”","??"=>"?“","??"=>"?’","??"=>"?‘","?°"=>"??","??"=>"Ε","??"=>"Î?","??"=>"Î?","?°"=>"Κ","??"=>"?",
- "?"=>"??","??"=>"??","?"=>"?¨","?§"=>"??","??"=>"?¤","??"=>"??","??"=>"? ","?&#x;"=>"?ž","??"=>"?œ","?›"=>"?š",
- "?™"=>"?˜","?–"=>"Î ","?•"=>"Î?","?‘"=>"Θ","??"=>"Î’","?Ž"=>"Î?","??"=>"ÎŽ","?Œ"=>"ÎŒ","?‹"=>"Î?","?Š"=>"Î?",
- "?‰"=>"Î","?ˆ"=>"Ψ","?‡"=>"Χ","?†"=>"Î?","?…"=>"Î?","?„"=>"Τ","?ƒ"=>"Î?","?‚"=>"Î?","? "=>"Î?","?€"=>"Î ",
- "Î?"=>"Î&#x;","Î"=>"Ξ","Î?"=>"Î?","Î?"=>"Îœ","Î?"=>"Λ","Î?"=>"Κ","Î"=>"Ι","θ"=>"Θ","Î?"=>"Η","Î?"=>"Ζ",
- "Î?"=>"Ε","δ"=>"Δ","Î?"=>"Γ","Î?"=>"Î’","Î?"=>"Α","Î?"=>"Ί","Î"=>"Ή","Î"=>"Έ","Î?"=>"Ά","?’"=>"??",
- "?‹"=>"??","?Š"=>"??","?ˆ"=>"?","?ƒ"=>"?","?€"=>"??","É?"=>"?&#x;","É?"=>"??","É?"=>"?œ","É"=>"?–","ɨ"=>"?—",
- "É?"=>"?”","É›"=>"??","É™"=>"??","É—"=>"?Š","É–"=>"?‰","É”"=>"?†","É“"=>"? ","??"=>"??","??"=>"?°","??"=>"?",
- "?"=>"??","??"=>"??","?"=>"?¨","?§"=>"??","??"=>"?¤","??"=>"??","?&#x;"=>"?ž","??"=>"?œ","?›"=>"?š","?™"=>"?˜",
- "?—"=>"?–","?•"=>"?”","?“"=>"?’","?‘"=>"??","??"=>"?Ž","??"=>"?Œ","?‹"=>"?Š","?‰"=>"?ˆ","?‡"=>"?†","?…"=>"?„",
- "?ƒ"=>"?‚","? "=>"?€","Ç?"=>"Ç","Ç?"=>"Ç?","Ç?"=>"Ç?","Ç"=>"Ǹ","Ç?"=>"Ç´","Ç?"=>"Ç?","Ç?"=>"Ç","Ç"=>"Ç?",
- "Ç?"=>"Ç?","Ç"=>"Ǩ","ǧ"=>"Ç?","Ç?"=>"Ǥ","Ç?"=>"Ç?","Ç?"=>"Ç ","Ç&#x;"=>"Çž","Ç?"=>"?Ž","Çœ"=>"Ç›","Çš"=>"Ç™",
- "ǘ"=>"Ç—","Ç–"=>"Ç•","Ç”"=>"Ç“","Ç’"=>"Ç‘","Ç?"=>"Ç?","ÇŽ"=>"Ç?","ÇŒ"=>"Ç‹","lj"=>"Lj","dž"=>"Ç…","??"=>"Ç?",
- "??"=>"??","?"=>"?¸","??"=>"??","?´"=>"??","?°"=>"??","?"=>"??","?¨"=>"?§","??"=>"?¤","??"=>"??","??"=>"? ",
- "?ž"=>"? ","?™"=>"?˜","?•"=>"Ç?","?’"=>"?‘","?Œ"=>"?‹","?ˆ"=>"?‡","?…"=>"?„","?ƒ"=>"?‚","??"=>"S","?"=>"??",
- "??"=>"??","??"=>"?","??"=>"??","??"=>"?´","??"=>"??","??"=>"?°","??"=>"?","?"=>"??","??"=>"??","?"=>"?¨",
- "?§"=>"??","??"=>"?¤","??"=>"??","??"=>"? ","?&#x;"=>"?ž","??"=>"?œ","?›"=>"?š","?™"=>"?˜","?—"=>"?–","?•"=>"?”",
- "?“"=>"?’","?‘"=>"??","??"=>"?Ž","??"=>"?Œ","?‹"=>"?Š","?ˆ"=>"?‡","?†"=>"?…","?„"=>"?ƒ","?‚"=>"? ","?€"=>"Ä?",
- "Ä"=>"Ä?","Ä?"=>"Ä?","Ä?"=>"Ä","Ä?"=>"Ä?","Ä?"=>"Ä´","Ä?"=>"Ä?","Ä?"=>"I","Ä?"=>"Ä","Ä"=>"Ä?","Ä?"=>"Ä?",
- "Ä"=>"Ĩ","ħ"=>"Ä?","Ä?"=>"Ĥ","Ä?"=>"Ä?","Ä?"=>"Ä ","Ä&#x;"=>"Äž","Ä?"=>"Äœ","Ä›"=>"Äš","Ä™"=>"Ę","Ä—"=>"Ä–",
- "Ä•"=>"Ä”","Ä“"=>"Ä’","Ä‘"=>"Ä?","Ä?"=>"ÄŽ","Ä?"=>"ÄŒ","Ä‹"=>"ÄŠ","ĉ"=>"Ĉ","ć"=>"Ć","Ä…"=>"Ä„","ă"=>"Ä‚",
- "Ä "=>"Ä€","??"=>"?¸","?"=>"?ž","??"=>"??","??"=>"?œ","??"=>"?›","??"=>"?š","?"=>"?™","?¸"=>"?˜","??"=>"?–",
- "??"=>"?•","?´"=>"?”","??"=>"?“","??"=>"?’","??"=>"?‘","?°"=>"??","??"=>"??","?"=>"?Ž","?"=>"??","??"=>"?Œ",
- "??"=>"?‹","??"=>"?Š","?"=>"?‰","?¨"=>"?ˆ","?§"=>"?‡","??"=>"?†","??"=>"?…","?¤"=>"?„","??"=>"?ƒ","??"=>"?‚",
- "??"=>"? ","? "=>"?€","Â?"=>"Îœ","z"=>"Z","y"=>"Y","x"=>"X","w"=>"W","v"=>"V","u"=>"U","t"=>"T",
- "s"=>"S","r"=>"R","q"=>"Q","p"=>"P","o"=>"O","n"=>"N","m"=>"M","l"=>"L","k"=>"K","j"=>"J",
- "i"=>"I","h"=>"H","g"=>"G","f"=>"F","e"=>"E","d"=>"D","c"=>"C","b"=>"B","a"=>"A"
- );
- /**
- * UTF-8 Case lookup table
- *
- * This lookuptable defines the lower case letters to their correspponding
- * upper case letter in UTF-8
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- global $UTF8_UPPER_TO_LOWER;
- if(empty($UTF8_UPPER_TO_LOWER)) $UTF8_UPPER_TO_LOWER = array (
- "???"=>"??š","??"=>"??™","??¸"=>"??˜","???"=>"??—","???"=>"??–","???"=>"??•","??´"=>"??”","???"=>"??“","???"=>"??’","???"=>"??‘",
- "??°"=>"???","???"=>"???","??"=>"??Ž","??"=>"???","???"=>"??Œ","???"=>"??‹","???"=>"??Š","??"=>"??‰","??¨"=>"??ˆ","??§"=>"??‡",
- "???"=>"??†","???"=>"??…","??¤"=>"??„","???"=>"??ƒ","???"=>"??‚","???"=>"?? ","á??"=>"á??","á??"=>"á??","á?"=>"á??","á?™"=>"á?‘",
- "á?˜"=>"á??","á?Œ"=>"á?ƒ","Ι"=>"á","á?"=>"á?","á"=>"á?","á¸"=>"á°","á?"=>"á§","á"=>"á?","á"=>"á?","á?"=>"á¤",
- "á?"=>"á?","á?"=>"á?","á"=>"á?","á&#x;"=>"á—","áž"=>"á–","á?"=>"á•","áœ"=>"á”","á›"=>"á“","áš"=>"á’","á™"=>"á‘",
- "á˜"=>"á?","á?"=>"á‡","áŽ"=>"á†","á?"=>"á…","áŒ"=>"á„","á‹"=>"áƒ","áŠ"=>"á‚","á‰"=>"á ","áˆ"=>"á€","á??"=>"á??",
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