<?php /** * @author "Sebastián Grignoli" <grignoli@framework2.com.ar> * @package Encoding * @version 1.1 * @link http://www.framework2.com.ar/dzone/forceUTF8-es/ * @example http://www.framework2.com.ar/dzone/forceUTF8-es/ */ class Encoding { protected static $win1252ToUtf8 = array( 128 => "\xe2\x82\xac", 130 => "\xe2\x80\x9a", 131 => "\xc6\x92", 132 => "\xe2\x80\x9e", 133 => "\xe2\x80\xa6", 134 => "\xe2\x80\xa0", 135 => "\xe2\x80\xa1", 136 => "\xcb\x86", 137 => "\xe2\x80\xb0", 138 => "\xc5\xa0", 139 => "\xe2\x80\xb9", 140 => "\xc5\x92", 142 => "\xc5\xbd", 145 => "\xe2\x80\x98", 146 => "\xe2\x80\x99", 147 => "\xe2\x80\x9c", 148 => "\xe2\x80\x9d", 149 => "\xe2\x80\xa2", 150 => "\xe2\x80\x93", 151 => "\xe2\x80\x94", 152 => "\xcb\x9c", 153 => "\xe2\x84\xa2", 154 => "\xc5\xa1", 155 => "\xe2\x80\xba", 156 => "\xc5\x93", 158 => "\xc5\xbe", 159 => "\xc5\xb8" ); protected static $brokenUtf8ToUtf8 = array( "\xc2\x80" => "\xe2\x82\xac", "\xc2\x82" => "\xe2\x80\x9a", "\xc2\x83" => "\xc6\x92", "\xc2\x84" => "\xe2\x80\x9e", "\xc2\x85" => "\xe2\x80\xa6", "\xc2\x86" => "\xe2\x80\xa0", "\xc2\x87" => "\xe2\x80\xa1", "\xc2\x88" => "\xcb\x86", "\xc2\x89" => "\xe2\x80\xb0", "\xc2\x8a" => "\xc5\xa0", "\xc2\x8b" => "\xe2\x80\xb9", "\xc2\x8c" => "\xc5\x92", "\xc2\x8e" => "\xc5\xbd", "\xc2\x91" => "\xe2\x80\x98", "\xc2\x92" => "\xe2\x80\x99", "\xc2\x93" => "\xe2\x80\x9c", "\xc2\x94" => "\xe2\x80\x9d", "\xc2\x95" => "\xe2\x80\xa2", "\xc2\x96" => "\xe2\x80\x93", "\xc2\x97" => "\xe2\x80\x94", "\xc2\x98" => "\xcb\x9c", "\xc2\x99" => "\xe2\x84\xa2", "\xc2\x9a" => "\xc5\xa1", "\xc2\x9b" => "\xe2\x80\xba", "\xc2\x9c" => "\xc5\x93", "\xc2\x9e" => "\xc5\xbe", "\xc2\x9f" => "\xc5\xb8" ); protected static $utf8ToWin1252 = array( "\xe2\x82\xac" => "\x80", "\xe2\x80\x9a" => "\x82", "\xc6\x92" => "\x83", "\xe2\x80\x9e" => "\x84", "\xe2\x80\xa6" => "\x85", "\xe2\x80\xa0" => "\x86", "\xe2\x80\xa1" => "\x87", "\xcb\x86" => "\x88", "\xe2\x80\xb0" => "\x89", "\xc5\xa0" => "\x8a", "\xe2\x80\xb9" => "\x8b", "\xc5\x92" => "\x8c", "\xc5\xbd" => "\x8e", "\xe2\x80\x98" => "\x91", "\xe2\x80\x99" => "\x92", "\xe2\x80\x9c" => "\x93", "\xe2\x80\x9d" => "\x94", "\xe2\x80\xa2" => "\x95", "\xe2\x80\x93" => "\x96", "\xe2\x80\x94" => "\x97", "\xcb\x9c" => "\x98", "\xe2\x84\xa2" => "\x99", "\xc5\xa1" => "\x9a", "\xe2\x80\xba" => "\x9b", "\xc5\x93" => "\x9c", "\xc5\xbe" => "\x9e", "\xc5\xb8" => "\x9f" ); static function toUTF8($text){ /** * Function Encoding::toUTF8 * * This function leaves UTF8 characters alone, while converting almost all non-UTF8 to UTF8. * * It assumes that the encoding of the original string is either Windows-1252 or ISO 8859-1. * * It may fail to convert characters to UTF-8 if they fall into one of these scenarios: * * 1) when any of these characters: ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞß * are followed by any of these: ("group B") * ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶•¸¹º»¼½¾¿ * For example: %ABREPRESENT%C9%BB. «REPRESENTÉ» * The "«" (%AB) character will be converted, but the "É" followed by "»" (%C9%BB) * is also a valid unicode character, and will be left unchanged. * * 2) when any of these: àáâãäåæçèéêëìíîï are followed by TWO chars from group B, * 3) when any of these: ðñòó are followed by THREE chars from group B. * * @name toUTF8 * @param string $text Any string. * @return string The same string, UTF8 encoded * */ if(is_array($text)) { foreach($text as $k => $v) { $text[$k] = self::toUTF8($v); } return $text; } elseif(is_string($text)) { $max = strlen($text); $buf = ""; for($i = 0; $i < $max; $i++){ $c1 = $text{$i}; if($c1>="\xc0"){ //Should be converted to UTF8, if it's not UTF8 already $c2 = $i+1 >= $max? "\x00" : $text{$i+1}; $c3 = $i+2 >= $max? "\x00" : $text{$i+2}; $c4 = $i+3 >= $max? "\x00" : $text{$i+3}; if($c1 >= "\xc0" & $c1 <= "\xdf"){ //looks like 2 bytes UTF8 if($c2 >= "\x80" && $c2 <= "\xbf"){ //yeah, almost sure it's UTF8 already $buf .= $c1 . $c2; $i++; } else { //not valid UTF8. Convert it. $cc1 = (chr(ord($c1) / 64) | "\xc0"); $cc2 = ($c1 & "\x3f") | "\x80"; $buf .= $cc1 . $cc2; } } elseif($c1 >= "\xe0" & $c1 <= "\xef"){ //looks like 3 bytes UTF8 if($c2 >= "\x80" && $c2 <= "\xbf" && $c3 >= "\x80" && $c3 <= "\xbf"){ //yeah, almost sure it's UTF8 already $buf .= $c1 . $c2 . $c3; $i = $i + 2; } else { //not valid UTF8. Convert it. $cc1 = (chr(ord($c1) / 64) | "\xc0"); $cc2 = ($c1 & "\x3f") | "\x80"; $buf .= $cc1 . $cc2; } } elseif($c1 >= "\xf0" & $c1 <= "\xf7"){ //looks like 4 bytes UTF8 if($c2 >= "\x80" && $c2 <= "\xbf" && $c3 >= "\x80" && $c3 <= "\xbf" && $c4 >= "\x80" && $c4 <= "\xbf"){ //yeah, almost sure it's UTF8 already $buf .= $c1 . $c2 . $c3; $i = $i + 2; } else { //not valid UTF8. Convert it. $cc1 = (chr(ord($c1) / 64) | "\xc0"); $cc2 = ($c1 & "\x3f") | "\x80"; $buf .= $cc1 . $cc2; } } else { //doesn't look like UTF8, but should be converted $cc1 = (chr(ord($c1) / 64) | "\xc0"); $cc2 = (($c1 & "\x3f") | "\x80"); $buf .= $cc1 . $cc2; } } elseif(($c1 & "\xc0") == "\x80"){ // needs conversion if(isset(self::$win1252ToUtf8[ord($c1)])) { //found in Windows-1252 special cases $buf .= self::$win1252ToUtf8[ord($c1)]; } else { $cc1 = (chr(ord($c1) / 64) | "\xc0"); $cc2 = (($c1 & "\x3f") | "\x80"); $buf .= $cc1 . $cc2; } } else { // it doesn't need convesion $buf .= $c1; } } return $buf; } else { return $text; } } static function toWin1252($text) { if(is_array($text)) { foreach($text as $k => $v) { $text[$k] = self::toWin1252($v); } return $text; } elseif(is_string($text)) { return utf8_decode(str_replace(array_keys(self::$utf8ToWin1252), array_values(self::$utf8ToWin1252), self::toUTF8($text))); } else { return $text; } } static function toISO8859($text) { return self::toWin1252($text); } static function toLatin1($text) { return self::toWin1252($text); } static function fixUTF8($text){ if(is_array($text)) { foreach($text as $k => $v) { $text[$k] = self::fixUTF8($v); } return $text; } $last = ""; while($last <> $text){ $last = $text; $text = self::toUTF8(utf8_decode(str_replace(array_keys(self::$utf8ToWin1252), array_values(self::$utf8ToWin1252), $text))); } $text = self::toUTF8(utf8_decode(str_replace(array_keys(self::$utf8ToWin1252), array_values(self::$utf8ToWin1252), $text))); return $text; } static function UTF8FixWin1252Chars($text){ // If you received an UTF-8 string that was converted from Windows-1252 as it was ISO8859-1 // (ignoring Windows-1252 chars from 80 to 9F) use this function to fix it. // See: http://en.wikipedia.org/wiki/Windows-1252 return str_replace(array_keys(self::$brokenUtf8ToUtf8), array_values(self::$brokenUtf8ToUtf8), $text); } static function removeBOM($str=""){ if(substr($str, 0,3) == pack("CCC",0xef,0xbb,0xbf)) { $str=substr($str, 3); } return $str; } }