strtoupper
Here is my array for char normalization:
<?php
$normalizeChars = array(
'Á'=>'A', 'À'=>'A', 'Â'=>'A', 'Ã'=>'A', 'Å'=>'A', 'Ä'=>'A', 'Æ'=>'AE', 'Ç'=>'C',
'É'=>'E', 'È'=>'E', 'Ê'=>'E', 'Ë'=>'E', 'Í'=>'I', 'Ì'=>'I', 'Î'=>'I', 'Ï'=>'I', 'Ð'=>'Eth',
'Ñ'=>'N', 'Ó'=>'O', 'Ò'=>'O', 'Ô'=>'O', 'Õ'=>'O', 'Ö'=>'O', 'Ø'=>'O',
'Ú'=>'U', 'Ù'=>'U', 'Û'=>'U', 'Ü'=>'U', 'Ý'=>'Y',
'á'=>'a', 'à'=>'a', 'â'=>'a', 'ã'=>'a', 'å'=>'a', 'ä'=>'a', 'æ'=>'ae', 'ç'=>'c',
'é'=>'e', 'è'=>'e', 'ê'=>'e', 'ë'=>'e', 'í'=>'i', 'ì'=>'i', 'î'=>'i', 'ï'=>'i', 'ð'=>'eth',
'ñ'=>'n', 'ó'=>'o', 'ò'=>'o', 'ô'=>'o', 'õ'=>'o', 'ö'=>'o', 'ø'=>'o',
'ú'=>'u', 'ù'=>'u', 'û'=>'u', 'ü'=>'u', 'ý'=>'y',
'ß'=>'sz', 'þ'=>'thorn', 'ÿ'=>'y'
);
?>
strtr
(PHP 4, PHP 5)
strtr — Traduz certos caracteres
Descrição
string strtr
( string $str
, string $from
, string $to
)
string strtr
( string $str
, array $replace_pairs
)
Esta função retorna uma cópia de str, traduzindo todas as ocorrências de cada caractere em from para o caractere correspondente em to.
Se from e to são de comprimentos diferentes, os caracteres extras no mais longo dos dois são ignorados.
Parâmetros
Valor Retornado
Esta função retorna uma cópia de str, traduzindo todas ocorrências de cada caractere em from para correspondentes caracteres em to.
Histórico
| Versão | Descrição |
|---|---|
| 4.0.0 | Os parâmetros to e from foram adicionados. |
Exemplos
Exemplo #1 Exemplo da strtr()
<?php
$addr = strtr($addr, "äåö", "aao");
?>
strtr() pode ser chamada com apenas dois argumentas. Se chamada com dois argumentos ele se comporta de uma maneira nova: from então tem que ser um array que contém string -> pares de string que serão substituídas na string original. strtr() sempre procurará pela primeira maior compatibilidade possível e *não* tentará substituir nada que ela já tenha trabalhado.
Exemplo #2 strtr() exemplo com dois argumentos
<?php
$trans = array("hello" => "hi", "hi" => "hello");
echo strtr("hi all, I said hello", $trans);
?>
O exemplo acima irá imprimir:
hello all, I said hi
add a note
User Contributed Notes
strtr
antimoz at gmail dot com
08-Feb-2012 08:08
Sam
01-Feb-2012 03:33
Case Insensitive strtr
<?php
function stritr($string, $one, $two=null) {
if (is_string($one)) {
return strtr($string, strtoupper($one) . strtolower($one), "$two$two");
} else if (is_array($one)) {
$strReturn = $string
foreach ($one as $key => $val) {
$strReturn = preg_replace("'$key'i", $val, $strReturn);
}
return $strReturn;
}
return $string;
}
?>
Michael Schuijff
24-Oct-2011 04:02
I found that this approach is often faster than strtr() and won't change the same thing in your string twice (as opposed to str_replace(), which will overwrite things in the order of the array you feed it with):
<?php
function replace ($text, $replace) {
$keys = array_keys($replace);
$length = array_combine($keys, array_map('strlen', $keys));
arsort($length);
$array[] = $text;
$count = 1;
reset($length);
while ($key = key($length)) {
if (strpos($text, $key) !== false) {
for ($i = 0; $i < $count; $i += 2) {
if (($pos = strpos($array[$i], $key)) === false) continue;
array_splice($array, $i, 1, array(substr($array[$i], 0, $pos), $replace[$key], substr($array[$i], $pos + strlen($key))));
$count += 2;
}
}
next($length);
}
return implode($array);
}
?>
Chris
04-Feb-2011 05:49
Hope this is useful when you need to see ASCII control characters:
<?php
$xlate = array(chr(0) => '^@/NUL/null', chr(1) => '^A/SOH/start of heading', chr(2) => '^B/STX/start of text', chr(3) => '^C/ETX/end of text', chr(4) => '^D/EOT/end of transmisssion', chr(5) => '^E/ENQ/enquiry', chr(6) => '^F/ACK/acknowledge', chr(7) => '^G/BEL/bell', chr(8) => '^H/BS/backspace', chr(9) => '^I/TAB/horizontal tab', chr(10) => '^J/LF/NL/line feed/new line', chr(11) => '^K/VT/vertical tab', chr(12) => '^L/FF/NP/form feed/new page/', chr(13) => '^M/CR/carrige return', chr(14) => '^N/SO/shift out', chr(15) => '^O/SI/shift in', chr(16) => '^P/DLE/data link escape', chr(17) => '^Q/DC1/device control 1', chr(18) => '^R/DC2/device control 2', chr(19) => '^S/DC3/device control 3', chr(20) => '^T/DC4/device control 4', chr(21) => '^U/NAK/negative acknowledge', chr(22) => '^V/SYN/synchronous idle', chr(23) => '^W/ETB/end of transmission block', chr(24) => '^X/CAN/cancel', chr(25) => '^Y/EM/end of medium', chr(26) => '^Z/SUB/substiute', chr(27) => '^[/ESC/escape', chr(28) => '^\/FS/file separator', chr(29) => '^]/GS/group separator', chr(30) => '^^/RS/record separator', chr(31) => '^_/US/unit separator', chr(32) => 'Space');
$x = 0;
$pad = strlen(strlen($str));
while(isset($str[$x]))
echo 'character ', str_pad($x+1, $pad), ' = ', strtr($str[$x], $xlate), ' (ascii ', ord($str[$x++]), ')';
?>
sales at mk2solutions dot com
29-Jun-2010 05:59
This is what we use for prepping data that is going to be used for shortURLs or just needs to be completely cleaned
<?php
$GLOBALS['normalizeChars'] = array(
'Š'=>'S', 'š'=>'s', 'Ð'=>'Dj','Ž'=>'Z', 'ž'=>'z', 'À'=>'A', 'Á'=>'A', 'Â'=>'A', 'Ã'=>'A', 'Ä'=>'A',
'Å'=>'A', 'Æ'=>'A', 'Ç'=>'C', 'È'=>'E', 'É'=>'E', 'Ê'=>'E', 'Ë'=>'E', 'Ì'=>'I', 'Í'=>'I', 'Î'=>'I',
'Ï'=>'I', 'Ñ'=>'N', 'Ò'=>'O', 'Ó'=>'O', 'Ô'=>'O', 'Õ'=>'O', 'Ö'=>'O', 'Ø'=>'O', 'Ù'=>'U', 'Ú'=>'U',
'Û'=>'U', 'Ü'=>'U', 'Ý'=>'Y', 'Þ'=>'B', 'ß'=>'Ss','à'=>'a', 'á'=>'a', 'â'=>'a', 'ã'=>'a', 'ä'=>'a',
'å'=>'a', 'æ'=>'a', 'ç'=>'c', 'è'=>'e', 'é'=>'e', 'ê'=>'e', 'ë'=>'e', 'ì'=>'i', 'í'=>'i', 'î'=>'i',
'ï'=>'i', 'ð'=>'o', 'ñ'=>'n', 'ò'=>'o', 'ó'=>'o', 'ô'=>'o', 'õ'=>'o', 'ö'=>'o', 'ø'=>'o', 'ù'=>'u',
'ú'=>'u', 'û'=>'u', 'ý'=>'y', 'ý'=>'y', 'þ'=>'b', 'ÿ'=>'y', 'ƒ'=>'f'
);
function cleanForShortURL($toClean) {
$toClean = str_replace('&', '-and-', $toClean);
$toClean = trim(preg_replace('/[^\w\d_ -]/si', '', $toClean));//remove all illegal chars
$toClean = str_replace(' ', '-', $toClean);
$toClean = str_replace('--', '-', $toClean);
return strtr($toClean, $GLOBALS['normalizeChars']);
}
This process cleans up any special characters and also coverts strings to a readable safe URL format.
?>
elloromtz at gmail dot com
19-Apr-2010 11:08
If you supply 3 arguments and the 2nd is an array, strtr will search the "A" from "Array" (because you're treating it as a scalar string) and replace it with the 3rd argument:
strtr('Analogy', array('x'=>'y'), '_'); //'_nalogy'
so in reality the above code has the same affect as:
strtr('Analogy', 'A' , '_');
Anonymous
24-Nov-2009 05:09
Here's a one-liner to strip out non-standard ascii characters, inspired by joeldegan AT yahoo's post below.
<?php
$new = preg_replace("/[^\x9\xA\xD\x20-\x7F]/", "", $old);
?>
nvyktor
09-Sep-2009 01:02
Hi all,
as u probably know the is some truoble with the (for example) hungarian special characters. If I used the htmlentities() function, the simple chars had benn converted to the basic format, for example: & aacute;. However this was very simple, some cases it needs more transformation.
As I would like to use the correct caracters even in php, html, js, and more, a wrote this short code to solve this issue:
<?php
function charcode ($text) {
$text = htmlentities($text); //to convert the simple spec chars
$search = array("& otilde;","&O tilde;","& ucirc;","&U circ;");
$replace = array("& #337;","& #336;","& #369;","& #368;");
$text = str_replace($search, $replace, $text);
return $text;
}
?>
Now I am able to display any spec chars in any browser with any character encoding set.
Hope U will find this helpful.
Vyktor
allixsenos at gmail dot com
16-May-2009 02:55
fixed "normaliza" functions written below to include Slavic Latin characters... also, it doesn't return lowercase any more (you can easily get that by applying strtolower yourself)...
also, renamed to normalize()
<?php
function normalize ($string) {
$table = array(
'Š'=>'S', 'š'=>'s', 'Đ'=>'Dj', 'đ'=>'dj', 'Ž'=>'Z', 'ž'=>'z', 'Č'=>'C', 'č'=>'c', 'Ć'=>'C', 'ć'=>'c',
'À'=>'A', 'Á'=>'A', 'Â'=>'A', 'Ã'=>'A', 'Ä'=>'A', 'Å'=>'A', 'Æ'=>'A', 'Ç'=>'C', 'È'=>'E', 'É'=>'E',
'Ê'=>'E', 'Ë'=>'E', 'Ì'=>'I', 'Í'=>'I', 'Î'=>'I', 'Ï'=>'I', 'Ñ'=>'N', 'Ò'=>'O', 'Ó'=>'O', 'Ô'=>'O',
'Õ'=>'O', 'Ö'=>'O', 'Ø'=>'O', 'Ù'=>'U', 'Ú'=>'U', 'Û'=>'U', 'Ü'=>'U', 'Ý'=>'Y', 'Þ'=>'B', 'ß'=>'Ss',
'à'=>'a', 'á'=>'a', 'â'=>'a', 'ã'=>'a', 'ä'=>'a', 'å'=>'a', 'æ'=>'a', 'ç'=>'c', 'è'=>'e', 'é'=>'e',
'ê'=>'e', 'ë'=>'e', 'ì'=>'i', 'í'=>'i', 'î'=>'i', 'ï'=>'i', 'ð'=>'o', 'ñ'=>'n', 'ò'=>'o', 'ó'=>'o',
'ô'=>'o', 'õ'=>'o', 'ö'=>'o', 'ø'=>'o', 'ù'=>'u', 'ú'=>'u', 'û'=>'u', 'ý'=>'y', 'ý'=>'y', 'þ'=>'b',
'ÿ'=>'y', 'Ŕ'=>'R', 'ŕ'=>'r',
);
return strtr($string, $table);
}
?>
Sidney Ricardo
05-Sep-2008 05:54
This work fine to me:
<?php
function normaliza ($string){
$a = 'ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞ
ßàáâãäåæçèéêëìíîïðñòóôõöøùúûýýþÿŔŕ';
$b = 'aaaaaaaceeeeiiiidnoooooouuuuy
bsaaaaaaaceeeeiiiidnoooooouuuyybyRr';
$string = utf8_decode($string);
$string = strtr($string, utf8_decode($a), $b);
$string = strtolower($string);
return utf8_encode($string);
}
?>
jorge at seisbits dot com
11-Jul-2008 06:04
If you try to make a strtr of not usual charafters when you are in a utf8 enviroment, you can do that:
function normaliza ($string){
$string = utf8_decode($string);
$string = strtr($string, utf8_decode(" ÂÊÎÔÛÀ"), "-AEIOU");
$string = strtolower($string);
return $string;
}
dot dot dot dot dot alexander at gmail dot com
25-Mar-2008 10:09
OK, I debugged the function (had some errors)
Here it is:
if(!function_exists("stritr")){
function stritr($string, $one = NULL, $two = NULL){
/*
stritr - case insensitive version of strtr
Author: Alexander Peev
Posted in PHP.NET
*/
if( is_string( $one ) ){
$two = strval( $two );
$one = substr( $one, 0, min( strlen($one), strlen($two) ) );
$two = substr( $two, 0, min( strlen($one), strlen($two) ) );
$product = strtr( $string, ( strtoupper($one) . strtolower($one) ), ( $two . $two ) );
return $product;
}
else if( is_array( $one ) ){
$pos1 = 0;
$product = $string;
while( count( $one ) > 0 ){
$positions = array();
foreach( $one as $from => $to ){
if( ( $pos2 = stripos( $product, $from, $pos1 ) ) === FALSE ){
unset( $one[ $from ] );
}
else{
$positions[ $from ] = $pos2;
}
}
if( count( $one ) <= 0 )break;
$winner = min( $positions );
$key = array_search( $winner, $positions );
$product = ( substr( $product, 0, $winner ) . $one[$key] . substr( $product, ( $winner + strlen($key) ) ) );
$pos1 = ( $winner + strlen( $one[$key] ) );
}
return $product;
}
else{
return $string;
}
}/* endfunction stritr */
}/* endfunction exists stritr */
dot dot dot dot dot alexander at gmail dot com
25-Mar-2008 04:44
Here is the stritr I always needed... I wrote it in 15 minutes... But only after the idea struck me. Hope you find it helpful, and enjoy...
<?php
if(!function_exists("stritr")){
function stritr($string, $one = NULL, $two = NULL){
/*
stritr - case insensitive version of strtr
Author: Alexander Peev
Posted in PHP.NET
*/
if( is_string( $one ) ){
$two = strval( $two );
$one = substr( $one, 0, min( strlen($one), strlen($two) ) );
$two = substr( $two, 0, min( strlen($one), strlen($two) ) );
$product = strtr( $string, ( strtoupper($one) . strtolower($one) ), ( $two . $two ) );
return $product;
}
else if( is_array( $one ) ){
$pos1 = 0;
$product = $string;
while( count( $one ) > 0 ){
$positions = array();
foreach( $one as $from => $to ){
if( ( $pos2 = stripos( $product, $from, $pos1 ) ) === FALSE ){
unset( $one[ $from ] );
}
else{
$positions[ $from ] = $pos2;
}
}
$winner = min( $positions );
$key = array_search( $winner, $positions );
$product = ( substr( $product, 0, $winner ) . $positions[$key] . substr( $product, ( $winner + strlen($key) ) ) );
$pos1 = ( $winner + strlen( $positions[$key] ) );
}
return $product;
}
else{
return $string;
}
}/* endfunction stritr */
}/* endfunction exists stritr */
?>
Jean-Marc Libs
26-Feb-2008 02:49
A couple of people have suggested examples of use of strstr() in order to do conversions from one charset to the other.
I would like to point out that this is the purpose of iconv().
troelskn at gmail dot com
23-Jan-2008 08:39
Here's another transcribe function. This one converts cp1252 (aka. Windows-1252) into iso-8859-1 (aka. latin1, the default PHP charset). It only transcribes the few exotic characters, which are unique to cp1252.
function transcribe_cp1252_to_latin1($cp1252) {
return strtr(
$cp1252,
array(
"\x80" => "e", "\x81" => " ", "\x82" => "'", "\x83" => 'f',
"\x84" => '"', "\x85" => "...", "\x86" => "+", "\x87" => "#",
"\x88" => "^", "\x89" => "0/00", "\x8A" => "S", "\x8B" => "<",
"\x8C" => "OE", "\x8D" => " ", "\x8E" => "Z", "\x8F" => " ",
"\x90" => " ", "\x91" => "`", "\x92" => "'", "\x93" => '"',
"\x94" => '"', "\x95" => "*", "\x96" => "-", "\x97" => "--",
"\x98" => "~", "\x99" => "(TM)", "\x9A" => "s", "\x9B" => ">",
"\x9C" => "oe", "\x9D" => " ", "\x9E" => "z", "\x9F" => "Y"));
ajitsingh4u at gmail dot com
06-Aug-2007 01:36
/**
* Replaces special characters with single quote,double quote and comma for charset iso-8859-1
*
* replaceSpecialChars()
* @param string $str
* @return string
*/
function replaceSpecialChars($str)
{
//`(96) ’(130) „(132) ‘(145) ’(146) “(147) ”(148) ´(180) // equivalent ascii values of these characters.
$str = strtr($str, "`’„‘’´", "'','''");
$str = strtr($str, '“”', '""');
return $str;
}
peter dot goodman at gmail dot com
28-Jun-2007 02:17
To the previous comment: great function, one character mapping it is missing is though is:
chr(226) => 'â'
horak.jan AT centrum.cz
22-May-2007 01:11
Here is a function to convert middle-european windows charset (cp1250) to the charset, that php script is written in:
<?php
function cp1250_to_utf2($text){
$dict = array(chr(225) => 'á', chr(228) => 'ä', chr(232) => 'č', chr(239) => 'ď',
chr(233) => 'é', chr(236) => 'ě', chr(237) => 'í', chr(229) => 'ĺ', chr(229) => 'ľ',
chr(242) => 'ň', chr(244) => 'ô', chr(243) => 'ó', chr(154) => 'š', chr(248) => 'ř',
chr(250) => 'ú', chr(249) => 'ů', chr(157) => 'ť', chr(253) => 'ý', chr(158) => 'ž',
chr(193) => 'Á', chr(196) => 'Ä', chr(200) => 'Č', chr(207) => 'Ď', chr(201) => 'É',
chr(204) => 'Ě', chr(205) => 'Í', chr(197) => 'Ĺ', chr(188) => 'Ľ', chr(210) => 'Ň',
chr(212) => 'Ô', chr(211) => 'Ó', chr(138) => 'Š', chr(216) => 'Ř', chr(218) => 'Ú',
chr(217) => 'Ů', chr(141) => 'Ť', chr(221) => 'Ý', chr(142) => 'Ž',
chr(150) => '-');
return strtr($text, $dict);
}
?>
joeldegan AT yahoo
07-Apr-2006 02:49
After battling with strtr trying to strip out MS word formatting from things pasted into forms I ended up coming up with this..
it strips ALL non-standard ascii characters, preserving html codes and such, but gets rid of all the characters that refuse to show in firefox.
If you look at this page in firefox you will see a ton of "question mark" characters and so it is not possible to copy and paste those to remove them from strings.. (this fixes that issue nicely, though I admit it could be done a bit better)
<?
function fixoutput($str){
$good[] = 9; #tab
$good[] = 10; #nl
$good[] = 13; #cr
for($a=32;$a<127;$a++){
$good[] = $a;
}
$len = strlen($str);
for($b=0;$b < $len+1; $b++){
if(in_array(ord($str[$b]), $good)){
$newstr .= $str[$b];
}//fi
}//rof
return $newstr;
}
?>
martin[dot]pelikan[at]gmail[dot]com
29-Dec-2005 12:20
// if you are upset with windows' ^M characters at the end of the line,
// these two lines are for you:
$trans = array("\x0D" => "");
$text = strtr($orig_text,$trans);
// note that ctrl+M (in vim known as ^M) is hexadecimally 0x0D
tomhmambo at seznam dot cz
19-Dec-2005 07:54
<?
// Windows-1250 to ASCII
// This function replace all Windows-1250 accent characters with
// thier non-accent ekvivalents. Useful for Czech and Slovak languages.
function win2ascii($str) {
$str = StrTr($str,
"\xE1\xE8\xEF\xEC\xE9\xED\xF2",
"\x61\x63\x64\x65\x65\x69\x6E");
$str = StrTr($str,
"\xF3\xF8\x9A\x9D\xF9\xFA\xFD\x9E\xF4\xBC\xBE",
"\x6F\x72\x73\x74\x75\x75\x79\x7A\x6F\x4C\x6C");
$str = StrTr($str,
"\xC1\xC8\xCF\xCC\xC9\xCD\xC2\xD3\xD8",
"\x41\x43\x44\x45\x45\x49\x4E\x4F\x52");
$str = StrTr($str,
"\x8A\x8D\xDA\xDD\x8E\xD2\xD9\xEF\xCF",
"\x53\x54\x55\x59\x5A\x4E\x55\x64\x44");
return $str;
}
?>
Ezbakhe Yassin <yassin88 at gmail dot com>
31-Aug-2005 09:55
Here you are a simple function to rotate a variable according to an array of possible values. You can make a strict comparison (===).
<?php
function rotateValue($string, $values, $strict = TRUE)
{
if (!empty($string) AND is_array($values))
{
$valuesCount = count($values);
for ($i = 0; $i < $valuesCount; $i++)
{
if ($strict ? ($string === $values[$i]) : ($string == $values[$i]))
{
return $values[($i + 1) % $valuesCount];
}
}
}
return FALSE;
}
?>
For example:
- rotateValue("A", array("A", "B", "C")) will return "B"
- rotateValue("C", array("A", "B", "C")) will return "A"
ru dot dy at gmx dot net
10-Jul-2005 10:20
Posting umlaute here resulted in a mess. Heres a version of the same function that works with preg_replace only:
<?php
function getRewriteString($sString) {
$string = strtolower(htmlentities($sString));
$string = preg_replace("/&(.)(uml);/", "$1e", $string);
$string = preg_replace("/&(.)(acute|cedil|circ|ring|tilde|uml);/", "$1", $string);
$string = preg_replace("/([^a-z0-9]+)/", "-", html_entity_decode($string));
$string = trim($string, "-");
return $string;
}
?>
-sven (www.bitcetera.com)
20-Apr-2005 05:48
And while we're at it, yet another transcriber (the code formerly known as accent remover). It does accents and umlauts, but also ligatures and runes known to ISO-8859-1. The translation strings must be on one line without any whitespaces in it. They are rendered hardwrapped here because this documentation doesn't allow long lines in notes.
function transcribe($string) {
$string = strtr($string,
"\xA1\xAA\xBA\xBF\xC0\xC1\xC2\xC3\xC5\xC7
\xC8\xC9\xCA\xCB\xCC\xCD\xCE\xCF\xD0\xD1
\xD2\xD3\xD4\xD5\xD8\xD9\xDA\xDB\xDD\xE0
\xE1\xE2\xE3\xE5\xE7\xE8\xE9\xEA\xEB\xEC
\xED\xEE\xEF\xF0\xF1\xF2\xF3\xF4\xF5\xF8
\xF9\xFA\xFB\xFD\xFF",
"!ao?AAAAAC
EEEEIIIIDN
OOOOOUUUYa
aaaaceeeei
iiidnooooo
uuuyy");
$string = strtr($string, array("\xC4"=>"Ae", "\xC6"=>"AE", "\xD6"=>"Oe", "\xDC"=>"Ue", "\xDE"=>"TH", "\xDF"=>"ss", "\xE4"=>"ae", "\xE6"=>"ae", "\xF6"=>"oe", "\xFC"=>"ue", "\xFE"=>"th"));
return($string);
}
(Funky: ISO-8859-1 does not cover the french "oe" ligature.)
info at oscaralexander dot com
12-Apr-2005 06:32
Here's a nice function for parsing a string to something suitable for URL rewriting (mod_rewrite). It translates all accented characters to their non-accented equivalents and replaces all other non-alphanumeric character with dashes:
function getRewriteString($sString) {
$string = htmlentities(strtolower($string));
$string = preg_replace("/&(.)(acute|cedil|circ|ring|tilde|uml);/", "$1", $string);
$string = preg_replace("/([^a-z0-9]+)/", "-", html_entity_decode($string));
$string = trim($string, "-");
return $string;
}
Stian
02-Mar-2005 06:58
elonen forgot the character (\xf8)
A (more) complete accent remover:
$txt = strtr($txt,
"\xe1\xc1\xe0\xc0\xe2\xc2\xe4\xc4\xe3\xc3\xe5\xc5".
"\xaa\xe7\xc7\xe9\xc9\xe8\xc8\xea\xca\xeb\xcb\xed".
"\xcd\xec\xcc\xee\xce\xef\xcf\xf1\xd1\xf3\xd3\xf2".
"\xd2\xf4\xd4\xf6\xd6\xf5\xd5\x8\xd8\xba\xf0\xfa\xda".
"\xf9\xd9\xfb\xdb\xfc\xdc\xfd\xdd\xff\xe6\xc6\xdf\xf8",
"aAaAaAaAaAaAacCeEeEeEeEiIiIiIiInNo".
"OoOoOoOoOoOoouUuUuUuUyYyaAso");
elonen at iki dot fi
25-Feb-2005 05:24
Yet another accent remover, this time pretty complete and without any 8-bit characters in the script itself:
$txt = strtr($txt,
"\xe1\xc1\xe0\xc0\xe2\xc2\xe4\xc4\xe3\xc3\xe5\xc5".
"\xaa\xe7\xc7\xe9\xc9\xe8\xc8\xea\xca\xeb\xcb\xed".
"\xcd\xec\xcc\xee\xce\xef\xcf\xf1\xd1\xf3\xd3\xf2".
"\xd2\xf4\xd4\xf6\xd6\xf5\xd5\x8\xd8\xba\xf0\xfa".
"\xda\xf9\xd9\xfb\xdb\xfc\xdc\xfd\xdd\xff\xe6\xc6\xdf",
"aAaAaAaAaAaAacCeEeEeEeEiIiIiIiInNoOoOoOoOoOoOoouUuUuUuUyYyaAs");
patrick at p-roocks dot de
06-Feb-2005 07:31
As Daijoubu suggested use str_replace instead of this function for large arrays/subjects. I just tried it with a array of 60 elements, a string with 8KB length, and the execution time of str_replace was faster at factor 20!
Patrick
Daijoubu
11-Jan-2005 08:19
Wouldn't:
<?php
$s = str_replace(array_key($replace_array), array_value($replace_array), $s);
?>
be faster?
Perhaps even faster using 2 seperate arrays...
10-Dec-2004 10:20
If you are going to call strtr a lot, consider using str_replace instead, as it is much faster. I cut execution time in half just by doing this.
<?
// i.e. instead of:
$s=strtr($s,$replace_array);
// use:
foreach($replace_array as $key=>$value) $s=str_replace($key,$value,$s);
?>
oliver at modix dot de
21-Oct-2004 07:08
Replace control characters in a binary string:
<?
function cc_replace($in) {
for ($i = 0; $i <= 31; $i++) {
$from .= chr($i);
$to .= ".";
}
return strtr($in, $from, $to);
}
?>
ktogias at math dot upatras dot gr
22-Sep-2004 09:32
This function is usefull for
accent insensitive regexp
searches into greek (iso8859-7) text:
(Select View -> Character Encoding -> Greek (iso8859-7)
at your browser to see the correct greek characters)
function gr_regexp($mystring){
$replacement=array(
array("","","",""),
array("","","",""),
array("","","",""),
array("","","","","",""),
array("","","",""),
array("","","","","",""),
array("","","","")
);
foreach($replacement as $group){
foreach($group as $character){
$exp="[";
foreach($group as $expcharacter){
$exp.=$expcharacter;
}
$exp.="]";
$trans[$character]=$exp;
}
}
$temp=explode(" ", $mystring);
for ($i=0;$i<sizeof($temp);$i++){
$temp[$i]=strtr($temp[$i],$trans);
$temp[$i]=addslashes($temp[$i]);
}
return implode(".*",$temp);
}
$match=gr_regexp(" ");
//The next query string can be sent to MySQL
through mysql_query()
$query=
"Select `column` from `table` where `column2` REGEXP
'".$match."'";
from-php-net dot ticket at raf256 dot com
04-Jun-2004 10:59
Hi, before I found strtr() function I quickly wrote own repleacement, if someone is interested,
// by http://www.raf256.com - Rafal Maj
function ConvCharset($from,$to,$s) {
$l=strlen($s);
$S=''; // out put
for ($i=0; $i<$l; $i++) {
$c=$s[$i]; // curr char
$x=strpos($from, $c);
if ($x!==FALSE) $c=$to[$x];
$S.=$c;
}
return $S;
}
volkris at tamu dot edu
18-Mar-2004 11:25
Regarding christophe's conversion, note that the \x## values should be in double quotes, not single, so that the escape will be applied.
stewey at ambitious dot ca
04-Mar-2004 11:11
This version of macRomanToIso (originally posted by: marcus at synchromedia dot co dot uk) offers a couple of improvements. First, it removes the extra slashes '\' that broke the original function. Second, it adds four quote characters not supported in ISO 8859-1. These are the left double quote, right double quote, left single quote and right single quote.
Be sure to remove the line breaks from the two strings going into strtr or this function will not work properly.
Be careful what text you apply this to. If you apply it to ISO 8859-1 encoded text it will likely wreak havoc. I'll save you some trouble with this bit of advice: don't bother trying to detect what charset a certain text file is using, it can't be done reliably. Instead, consider making assumptions based upon the HTTP_USER_AGENT, or prompting the user to specify the character encoding used (perhaps both).
<?php
/**
* Converts MAC OS ROMAN encoded strings to the ISO 8859-1 charset.
*
* @param string the string to convert.
* @return string the converted string.
*/
function macRomanToIso($string)
{
return strtr($string,
"\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b
\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97
\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa1\xa4\xa6\xa7
\xa8\xab\xac\xae\xaf\xb4\xbb\xbc\xbe\xbf\xc0\xc1
\xc2\xc7\xc8\xca\xcb\xcc\xd6\xd8\xdb\xe1\xe5\xe6
\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf1\xf2\xf3
\xf4\xf8\xfc\xd2\xd3\xd4\xd5",
"\xc4\xc5\xc7\xc9\xd1\xd6\xdc\xe1\xe0\xe2\xe4\xe3
\xe5\xe7\xe9\xe8\xea\xeb\xed\xec\xee\xef\xf1\xf3
\xf2\xf4\xf6\xf5\xfa\xf9\xfb\xfc\xb0\xa7\xb6\xdf\xae
\xb4\xa8\xc6\xd8\xa5\xaa\xba\xe6\xf8\xbf\xa1\xac
\xab\xbb\xa0\xc0\xc3\xf7\xff\xa4\xb7\xc2\xca\xc1
\xcb\xc8\xcd\xce\xcf\xcc\xd3\xd4\xd2\xda\xdb\xd9
\xaf\xb8\x22\x22\x27\x27");
}
?>
christophe at publicityweb dot com
26-Feb-2004 05:04
Latin1 (iso-8859-1) DONT define chars \x80-\x9f (128-159),
but Windows charset 1252 defines _some_ of them
-- like the infamous msoffice 'magic quotes' (\x92 146).
Dont use those invalid control chars in webpages,
but their html (unicode) entities. See ftp.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP1252.TXT
or http://www.microsoft.com/typography/unicode/1252.htm
PS: a '?' in the code means the win-cp1252 dont define the given char.
$badlatin1_cp1252_to_htmlent =
array(
'\x80'=>'€', '\x81'=>'?', '\x82'=>'‚', '\x83'=>'ƒ',
'\x84'=>'„', '\x85'=>'…', '\x86'=>'†', \x87'=>'‡',
'\x88'=>'ˆ', '\x89'=>'‰', '\x8A'=>'Š', '\x8B'=>'‹',
'\x8C'=>'Œ', '\x8D'=>'?', '\x8E'=>'Ž', '\x8F'=>'?',
'\x90'=>'?', '\x91'=>'‘', '\x92'=>'’', '\x93'=>'“',
'\x94'=>'”', '\x95'=>'•', '\x96'=>'–', '\x97'=>'—',
'\x98'=>'˜', '\x99'=>'™', '\x9A'=>'š', '\x9B'=>'›',
'\x9C'=>'œ', '\x9D'=>'?', '\x9E'=>'ž', '\x9F'=>'Ÿ'
);
$str = strtr($str, $badlatin1_cp1252_to_htmlent);
rortiz_reyes at hotmail dot com
26-Jan-2004 02:15
If you have trouble accessing a file which has an accented or tilde letter (,,,,, or ) via Internet Explorer use the following translation table:
$trans = array("" => "%E1", "" => "%E9", "" => "%ED", "" => "%F3","" => "%FA", "" => "%D1",
"" => "%A1", "" => "%A9", "" => "%AD", "" => "%B3","" => "%BA", "" => "%F1");
To obtain the translation for other special characters not used in English (for example, ), type a fictitious filename on the Netscape 7.1 address bar (including URL, for example www.url.com/.jpg) and press enter. Netscape traslates the character while Explorer simply can't handle it.
Seems like another bug on Explorer 6.0...
Regards,
Ricardo Ortiz R.
j at pureftpd dot org
30-Nov-2003 01:24
Here's a very useful function to translate Microsoft characters into Latin 15, so that people won't see any more square instead of characters in web pages .
function demicrosoftize($str) {
return strtr($str,
"\x82\x83\x84\x85\x86\x87\x89\x8a" .
"\x8b\x8c\x8e\x91\x92\x93\x94\x95" .
"\x96\x97\x98\x99\x9a\x9b\x9c\x9e\x9f",
"'f\".**^\xa6<\xbc\xb4''" .
"\"\"---~ \xa8>\xbd\xb8\xbe");
}
Fernando "Malk" Piancastelli
29-Oct-2003 06:31
Here's a function to replace linebreaks to html <p> tags. This was initially designed to receive a typed text by a form in a "insert new notice" page and put in a database, then a "notice" page could get the text preformatted with paragraph tags instead of linebreaks that won't appear on browser. The function also removes repeated linebreaks the user may have typed in the form.
function break_to_tags(&$text) {
// find and remove repeated linebreaks
$double_break = array("\r\n\r\n" => "\r\n");
do {
$text = strtr($text, $double_break);
$position = strpos($text, "\r\n\r\n");
} while ($position !== false);
// find and replace remanescent linebreaks by <p> tags
$change = array("\r\n" => "<p>");
$text = strtr($text, $change);
}
[]'s
Fernando
Sanate at seznam dot cz
16-Jul-2003 11:51
// Hello to all Czech and Slovak people!
// I hope this function can be useful and easier to find here,
// than at the original source (and opposite direction). :
// http://www.kosek.cz/clanky/tipy/qa07.html
// s pozdravem Filip Rydlo z Pohodasoftware.Cz
function latin2_to_win1250($text) { // chce text v iso-88592
$text = StrTr($text, "\xA\xAB\xAE\xB\xBB\xBE",
"\x8A\x8D\x8E\x9A\x9D\x9E");
return $text;
}
mykel at has dot it
05-Feb-2003 11:08
strtr is a usefull encoding mechinism instead of using str_rot13. you can impliment it when you write usernames to a file, for example. but know that it is easy to crack your encription.
an example:
<?php
$unencripted = "hello";
$from = "abcdefghijklmnopqrstuvwxyz";
$to = "zyxwvutsrqponmlkjihgfedcba";
$temp = strtr($unencripted, $from, $to);
/* will return svool */
?>
hotmail - marksteward
26-Nov-2002 12:39
Referring to note from 11 October 2000, Thorn (, ), Eth (, ), Esset () and Mu () aren't really accented letters. , , , are ligatures. Best to do the following:
function removeaccents($string){
return strtr(
strtr($string,
'',
'SZszYAAAAAACEEEEIIIINOOOOOOUUUUYaaaaaaceeeeiiiinoooooouuuuyy'),
array('' => 'TH', '' => 'th', '' => 'DH', '' => 'dh', '' => 'ss',
'' => 'OE', '' => 'oe', '' => 'AE', '' => 'ae', '' => 'u'));
}
This would be no good for sorting, as thorn and eth aren't actually found under th and dh. Also especially redundant because of Unicode! Still, I'm sure somone can find use for it - perhaps to constrict filenames...
Mark
m dot frank at beam dot ag
21-Nov-2002 10:12
to get the ascii equivalent of unicode characters simply use the
utf8_decode() function
marco dot colombo at nexor dot it
11-Nov-2002 11:20
Suppose you're trying to remove any character not in your set, i've found this very helpfull:
function my_remove($string, $my_set, $new=" ", $black="#")
{
$first = strtr( $string, $my_set,
str_repeat($black, strlen($my_set)) );
$second = strtr( $string, $first,
str_repeat($new, strlen($first)) );
return $second;
};
NOTE that all non-wanted character will be replace with $new,
note also that $black must NOT to exist in $my_set.
Molok
bisqwit at iki dot fi
10-Aug-2002 04:18
#!/bin/sh
# This shell script generates a strtr() call
# to translate from a character set to another.
# Requires: gnu recode, perl, php commandline binary
#
# Usage:
# Set set1 and set2 to whatever you prefer
# (multibyte character sets are not supported)
# and run the script. The script outputs
# a strtr() php code for you to use.
#
# Example is set to generate a
# cp437..latin9 conversion code.
#
set1=cp437
set2=iso-8859-15
result="`echo '<? for($c=32;$c<256;$c++)'\
'echo chr($c);'\
|php -q|recode -f $set1..$set2`"
echo "// This php function call converts \$string in $set1 to $set2";
cat <<EOF | php -q
<?php
\$set1='`echo -n "$result"\
|perl -pe "s/([\\\\\'])/\\\\\\\\\\$1/g"`';
\$set2='`echo -n "$result"|recode -f $set2..$set1\
|perl -pe "s/([\\\\\'])/\\\\\\\\\\$1/g"`';
\$erase=array();
\$l=strlen(\$set1);
for(\$c=0;\$c<\$l;++\$c)
if(\$set1[\$c]==\$set2[\$c])\$erase[\$set1[\$c]]='';
if(count(\$erase))
{
\$set1=strtr(\$set1,\$erase);
\$set2=strtr(\$set2,\$erase);
}
if(!strlen(\$set1))echo 'IRREVERSIBLE';else
echo "strtr(\\\$string,\n '",
ereg_replace('([\\\\\\'])', '\\\\\\1', \$set2),
"',\n '",
ereg_replace('([\\\\\\'])', '\\\\\\1', \$set1),
"');";
EOF
gabi at unica dot edu
16-Jul-2002 11:32
To convert special chars to their html entities strtr you can use strtr in conjunction with get_html_translation_table(HTML_ENTITIES) :
$trans = get_html_translation_table(HTML_ENTITIES);
$html_code = strtr($html_code, $trans);
This will replace in $html_code the by Á , etc.
symlink23-remove-my-spleen at yahoo dot com
18-Apr-2002 03:33
As noted in the str_rot13 docs, some servers don't provide the str_rot13() function. However, the presence of strtr makes it easy to build your own facsimile thereof:
if (!function_exists('str_rot13')) {
function str_rot13($str) {
$from = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$to = 'nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM';
return strtr($str, $from, $to);
}
}
This is suitable for very light "encryption" such as hiding email addressess from spambots (then unscrambling them in a mail class, for example).
$mail_to=str_rot13("$mail_to");
erik at eldata dot se
23-Nov-2001 02:08
As an alternative to the not-yet-existing function stritr mentioned in the first note above You can easily do this:
strtr("abc","ABCabc","xyzxyz")
or more general:
strtr("abc",
strtoupper($fromchars).strtolower($fromchars),
$tochars.$tochars);
Just a thought.