strtoupper
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);
?>
strtr
(PHP 4, PHP 5)
strtr — Translate certain characters
Description
string strtr
( string $str
, string $from
, string $to
)
string strtr
( string $str
, array $replace_pairs
)
This function returns a copy of str , translating all occurrences of each character in from to the corresponding character in to .
If from and to are different lengths, the extra characters in the longer of the two are ignored.
Parameters
- str
-
The string being translated.
- from
-
The string being translated to to .
- to
-
The string replacing from .
- replace_pairs
-
The replace_pairs parameter may be used as a substitute for to and from in which case it's an array in the form array('from' => 'to', ...).
Return Values
This function returns a copy of str , translating all occurrences of each character in from to the corresponding character in to .
Changelog
| Version | Description |
|---|---|
| 4.0.0 | The optional to and from parameters were added. |
Examples
Example #1 strtr() example
<?php
$addr = strtr($addr, "äåö", "aao");
?>
strtr() may be called with only two arguments. If called with two arguments it behaves in a new way: from then has to be an array that contains string -> string pairs that will be replaced in the source string. strtr() will always look for the longest possible match first and will *NOT* try to replace stuff that it has already worked on.
Example #2 strtr() example with two arguments
<?php
$trans = array("hello" => "hi", "hi" => "hello");
echo strtr("hi all, I said hello", $trans);
?>
The above example will output:
hello all, I said hi
add a note
User Contributed Notesstrtr
Anonymous
25-Nov-2009 08:09
25-Nov-2009 08:09
nvyktor
09-Sep-2009 02:02
09-Sep-2009 02:02
Hi all,
as u probably know the is some truoble with the (for example) hungarian special characters. If I used the htmlentities() function, the simple chars had benn converted to the basic format, for example: & aacute;. However this was very simple, some cases it needs more transformation.
As I would like to use the correct caracters even in php, html, js, and more, a wrote this short code to solve this issue:
<?php
function charcode ($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 $text;
}
?>
Now I am able to display any spec chars in any browser with any character encoding set.
Hope U will find this helpful.
Vyktor
allixsenos at gmail dot com
16-May-2009 03:55
16-May-2009 03:55
fixed "normaliza" functions written below to include Slavic Latin characters... also, it doesn't return lowercase any more (you can easily get that by applying strtolower yourself)...
also, renamed to normalize()
<?php
function normalize ($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, $table);
}
?>
Sidney Ricardo
05-Sep-2008 06:54
05-Sep-2008 06:54
This work fine to me:
<?php
function normaliza ($string){
$a = 'ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞ
ßàáâãäåæçèéêëìíîïðñòóôõöøùúûýýþÿŔŕ';
$b = 'aaaaaaaceeeeiiiidnoooooouuuuy
bsaaaaaaaceeeeiiiidnoooooouuuyybyRr';
$string = utf8_decode($string);
$string = strtr($string, utf8_decode($a), $b);
$string = strtolower($string);
return utf8_encode($string);
}
?>
jorge at seisbits dot com
11-Jul-2008 07:04
11-Jul-2008 07:04
If you try to make a strtr of not usual charafters when you are in a utf8 enviroment, you can do that:
function normaliza ($string){
$string = utf8_decode($string);
$string = strtr($string, utf8_decode(" ÂÊÎÔÛÀ"), "-AEIOU");
$string = strtolower($string);
return $string;
}
dot dot dot dot dot alexander at gmail dot com
26-Mar-2008 12:09
26-Mar-2008 12:09
OK, I debugged the function (had some errors)
Here it is:
if(!function_exists("stritr")){
function stritr($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 $string;
}
}/* endfunction stritr */
}/* endfunction exists stritr */
dot dot dot dot dot alexander at gmail dot com
25-Mar-2008 06:44
25-Mar-2008 06:44
Here is the stritr I always needed... I wrote it in 15 minutes... But only after the idea struck me. Hope you find it helpful, and enjoy...
<?php
if(!function_exists("stritr")){
function stritr($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 $string;
}
}/* endfunction stritr */
}/* endfunction exists stritr */
?>
Jean-Marc Libs
26-Feb-2008 05:49
26-Feb-2008 05:49
A couple of people have suggested examples of use of strstr() in order to do conversions from one charset to the other.
I would like to point out that this is the purpose of iconv().
troelskn at gmail dot com
23-Jan-2008 11:39
23-Jan-2008 11:39
Here's another transcribe function. This one converts cp1252 (aka. Windows-1252) into iso-8859-1 (aka. latin1, the default PHP charset). It only transcribes the few exotic characters, which are unique to cp1252.
function transcribe_cp1252_to_latin1($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 02:36
06-Aug-2007 02:36
/**
* 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 $str;
}
peter dot goodman at gmail dot com
28-Jun-2007 03:17
28-Jun-2007 03:17
To the previous comment: great function, one character mapping it is missing is though is:
chr(226) => 'â'
horak.jan AT centrum.cz
22-May-2007 02:11
22-May-2007 02:11
Here is a function to convert middle-european windows charset (cp1250) to the charset, that php script is written in:
<?php
function cp1250_to_utf2($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, $dict);
}
?>
joeldegan AT yahoo
07-Apr-2006 03:49
07-Apr-2006 03:49
After battling with strtr trying to strip out MS word formatting from things pasted into forms I ended up coming up with this..
it strips ALL non-standard ascii characters, preserving html codes and such, but gets rid of all the characters that refuse to show in firefox.
If you look at this page in firefox you will see a ton of "question mark" characters and so it is not possible to copy and paste those to remove them from strings.. (this fixes that issue nicely, though I admit it could be done a bit better)
<?
function fixoutput($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 03:20
29-Dec-2005 03:20
// 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,$trans);
// note that ctrl+M (in vim known as ^M) is hexadecimally 0x0D
tomhmambo at seznam dot cz
20-Dec-2005 10:54
20-Dec-2005 10:54
<?
// Windows-1250 to ASCII
// This function replace all Windows-1250 accent characters with
// thier non-accent ekvivalents. Useful for Czech and Slovak languages.
function win2ascii($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 $str;
}
?>
Sanate at seznam dot cz
08-Dec-2005 11:30
08-Dec-2005 11:30
// Translates iso-8859-2 into UTF-8
function latin2_to_utf8($text) {
$trans = array(
chr(225)=>'', chr(193)=>'', chr(232)=>'', chr(200)=>'', chr(239)=>'', chr(207)=>'',
chr(233)=>'', chr(201)=>'', chr(236)=>'', chr(204)=>'', chr(237)=>'', chr(205)=>'',
chr(181)=>'', chr(165)=>'', chr(242)=>'', chr(210)=>'', chr(243)=>'', chr(211)=>'',
chr(248)=>'', chr(216)=>'', chr(185)=>'', chr(169)=>'', chr(187)=>'', chr(171)=>'',
chr(250)=>'', chr(218)=>'', chr(249)=>'', chr(217)=>'', chr(253)=>'', chr(221)=>'',
chr(190)=>'', chr(174)=>'', chr(180)=>"'"
);
return strtr($text, $trans);
}
// enjoy! :)
derernst at gmx dot ch
20-Sep-2005 05:29
20-Sep-2005 05:29
This works for me to remove accents for some characters of Latin-1, Latin-2 and Turkish in a UTF-8 environment, where the htmlentities-based solutions fail:
<?php
function remove_accents($string, $german=false) {
// Single letters
$single_fr = explode(" ", " Ą Ă Ć Č Ď Đ Ę Ě Ğ İ Ł Ľ Ĺ Ń Ň Ő Ŕ Ř Ś Ş Ť Ţ Ů Ű Ź Ż ą ă ć č ď đ ę ě ğ ı ł ľ ĺ ń ň ő ŕ ř ś ş ť ţ ů ű ź ż");
$single_to = explode(" ", "A A A A A A A A C C C D D D E E E E E E G I I I I I L L L N N N O O O O O O O R R S S S T T U U U U U U Y Z Z Z a a a a a a a a c c c d d e e e e e e g i i i i i l l l n n n o o o o o o o o r r s s s t t u u u u u u y y z z z");
$single = array();
for ($i=0; $i<count($single_fr); $i++) {
$single[$single_fr[$i]] = $single_to[$i];
}
// Ligatures
$ligatures = array(""=>"Ae", ""=>"ae", ""=>"Oe", ""=>"oe", ""=>"ss");
// German umlauts
$umlauts = array(""=>"Ae", ""=>"ae", ""=>"Oe", ""=>"oe", ""=>"Ue", ""=>"ue");
// Replace
$replacements = array_merge($single, $ligatures);
if ($german) $replacements = array_merge($replacements, $umlauts);
$string = strtr($string, $replacements);
return $string;
}
?>
I am sorry as the display of the user notes is broken the character lists shown will not be useable by now, but you see the principle. Speakers of certain languages might want to suggest changes or additions to the character lists.
Characters are divided by spaces and explode()d because I am on PHP4, and other splitting methods fail with double byte characters. In PHP5 split() might help, too.
The advantage of this approach is that non-latin characters remain untouched.
derernst at gmx dot ch
19-Sep-2005 01:24
19-Sep-2005 01:24
Additional to ru dot dy at gmx dot net's code:
1. You might want to convert ß to ss additionally
2. There could be impacts with other languages that use the umlaut characters: -> ae conversion for northern european languages such as Swedish, or -> ue conversion for Turkish. It would be useful if speakers of these and other languages could post their languages' correct conversions here.
anonymous at hotmail dot com
13-Sep-2005 07:03
13-Sep-2005 07:03
Usefull remove Accent function:
return strtr($string,
"
",
"SOZsozYYuAAAAAAACEEEEIIIIDNOO
OOOOUUUUYsaaaaaaaceeeeiiiionoooooouuuuyy");
Ezbakhe Yassin <yassin88 at gmail dot com>
31-Aug-2005 10:55
31-Aug-2005 10:55
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) % $valuesCount];
}
}
}
return FALSE;
}
?>
For example:
- rotateValue("A", array("A", "B", "C")) will return "B"
- rotateValue("C", array("A", "B", "C")) will return "A"
stefan
19-Jul-2005 01:46
19-Jul-2005 01:46
there is obviously an S missing in getRewriteString from above:
function getRewriteString($sString) {
$string = htmlentities(strtolower($sString));
$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 $string;
}
ru dot dy at gmx dot net
10-Jul-2005 11:20
10-Jul-2005 11:20
Posting umlaute here resulted in a mess. Heres a version of the same function that works with preg_replace only:
<?php
function getRewriteString($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;
}
?>
ru dot dy at gmx dot net
10-Jul-2005 10:53
10-Jul-2005 10:53
The function 'getWriteString' for parsing URLs below is very useful, but it has a little bug. PHP strtolower does not recognize capitalized accented characters. The result is that they are replaced with '-'. To correct this, change the first line in the function from:
<?php $string = htmlentities(strtolower($string)); ?>
into:
<?php $string = strtolower(htmlentities($sString)); ?>
Theres another Problem with search-engines, regarding german keywords with umlaute. Searchengines such as Google replace german umlaute with a following 'e'. Replacing the umlaute in words just with their unaccented characters gives the word another or no sense. The result of this is that the contained keyword in the url is incorrect and brings minor advantage for the pagerank of the site. At last, this did it for me:
<?php
function getRewriteString($sString) {
$string = strtolower( htmlentities( strtr($sString, array(""=>"Ae", ""=>"Ue", ""=>"Oe", ""=>"ae", ""=>"ue", ""=>"oe")) ) );
$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;
}
?>
Jay K
03-May-2005 04:22
03-May-2005 04:22
Several people have suggested using str_replace instead of strtr... Here is why that will not always work....
<?
$string = "This is a BIG test with SMALL RESULT\n";
$repl = array('BIG' => 'SMALL', 'SMALL' => 'BIG');
echo str_replace(array_keys($repl), array_values($repl), $string);
echo strtr($string, $repl);
?>
Results in:
This is a BIG test with BIG RESULT
This is a SMALL test with BIG RESULT
Notice that str_replace will replace previous replacements and strtr will not.
-sven (www.bitcetera.com)
21-Apr-2005 06:48
21-Apr-2005 06:48
And while we're at it, yet another transcriber (the code formerly known as accent remover). It does accents and umlauts, but also ligatures and runes known to ISO-8859-1. The translation strings must be on one line without any whitespaces in it. They are rendered hardwrapped here because this documentation doesn't allow long lines in notes.
function transcribe($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($string);
}
(Funky: ISO-8859-1 does not cover the french "oe" ligature.)
info at oscaralexander dot com
13-Apr-2005 07:32
13-Apr-2005 07:32
Here's a nice function for parsing a string to something suitable for URL rewriting (mod_rewrite). It translates all accented characters to their non-accented equivalents and replaces all other non-alphanumeric character with dashes:
function getRewriteString($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 09:58
02-Mar-2005 09:58
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 08:24
25-Feb-2005 08:24
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 10:31
06-Feb-2005 10:31
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
12-Jan-2005 11:19
12-Jan-2005 11:19
Wouldn't:
<?php
$s = str_replace(array_key($replace_array), array_value($replace_array), $s);
?>
be faster?
Perhaps even faster using 2 seperate arrays...
11-Dec-2004 01:20
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
22-Oct-2004 08:08
22-Oct-2004 08:08
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, $to);
}
?>
ktogias at math dot upatras dot gr
23-Sep-2004 10:32
23-Sep-2004 10:32
This function is usefull for
accent insensitive regexp
searches into greek (iso8859-7) text:
(Select View -> Character Encoding -> Greek (iso8859-7)
at your browser to see the correct greek characters)
function gr_regexp($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 11:59
04-Jun-2004 11:59
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 $S;
}
volkris at tamu dot edu
19-Mar-2004 02:25
19-Mar-2004 02:25
Regarding christophe's conversion, note that the \x## values should be in double quotes, not single, so that the escape will be applied.
stewey at ambitious dot ca
05-Mar-2004 02:11
05-Mar-2004 02:11
This version of macRomanToIso (originally posted by: marcus at synchromedia dot co dot uk) offers a couple of improvements. First, it removes the extra slashes '\' that broke the original function. Second, it adds four quote characters not supported in ISO 8859-1. These are the left double quote, right double quote, left single quote and right single quote.
Be sure to remove the line breaks from the two strings going into strtr or this function will not work properly.
Be careful what text you apply this to. If you apply it to ISO 8859-1 encoded text it will likely wreak havoc. I'll save you some trouble with this bit of advice: don't bother trying to detect what charset a certain text file is using, it can't be done reliably. Instead, consider making assumptions based upon the HTTP_USER_AGENT, or prompting the user to specify the character encoding used (perhaps both).
<?php
/**
* Converts MAC OS ROMAN encoded strings to the ISO 8859-1 charset.
*
* @param string the string to convert.
* @return string the converted string.
*/
function macRomanToIso($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 08:04
26-Feb-2004 08:04
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
27-Jan-2004 05:15
27-Jan-2004 05:15
If you have trouble accessing a file which has an accented or tilde letter (,,,,, or ) via Internet Explorer use the following translation table:
$trans = array("" => "%E1", "" => "%E9", "" => "%ED", "" => "%F3","" => "%FA", "" => "%D1",
"" => "%A1", "" => "%A9", "" => "%AD", "" => "%B3","" => "%BA", "" => "%F1");
To obtain the translation for other special characters not used in English (for example, ), type a fictitious filename on the Netscape 7.1 address bar (including URL, for example www.url.com/.jpg) and press enter. Netscape traslates the character while Explorer simply can't handle it.
Seems like another bug on Explorer 6.0...
Regards,
Ricardo Ortiz R.
j at pureftpd dot org
30-Nov-2003 04:24
30-Nov-2003 04:24
Here's a very useful function to translate Microsoft characters into Latin 15, so that people won't see any more square instead of characters in web pages .
function demicrosoftize($str) {
return strtr($str,
"\x82\x83\x84\x85\x86\x87\x89\x8a" .
"\x8b\x8c\x8e\x91\x92\x93\x94\x95" .
"\x96\x97\x98\x99\x9a\x9b\x9c\x9e\x9f",
"'f\".**^\xa6<\xbc\xb4''" .
"\"\"---~ \xa8>\xbd\xb8\xbe");
}
Fernando "Malk" Piancastelli
29-Oct-2003 09:31
29-Oct-2003 09:31
Here's a function to replace linebreaks to html <p> tags. This was initially designed to receive a typed text by a form in a "insert new notice" page and put in a database, then a "notice" page could get the text preformatted with paragraph tags instead of linebreaks that won't appear on browser. The function also removes repeated linebreaks the user may have typed in the form.
function break_to_tags(&$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, $change);
}
[]'s
Fernando
Sanate at seznam dot cz
17-Jul-2003 12:51
17-Jul-2003 12:51
// Hello to all Czech and Slovak people!
// I hope this function can be useful and easier to find here,
// than at the original source (and opposite direction). :
// http://www.kosek.cz/clanky/tipy/qa07.html
// s pozdravem Filip Rydlo z Pohodasoftware.Cz
function latin2_to_win1250($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
06-Feb-2003 02:08
06-Feb-2003 02:08
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, $to);
/* will return svool */
?>
hotmail - marksteward
27-Nov-2002 03:39
27-Nov-2002 03:39
Referring to note from 11 October 2000, Thorn (, ), Eth (, ), Esset () and Mu () aren't really accented letters. , , , are ligatures. Best to do the following:
function removeaccents($string){
return strtr(
strtr($string,
'',
'SZszYAAAAAACEEEEIIIINOOOOOOUUUUYaaaaaaceeeeiiiinoooooouuuuyy'),
array('' => 'TH', '' => 'th', '' => 'DH', '' => 'dh', '' => 'ss',
'' => 'OE', '' => 'oe', '' => 'AE', '' => 'ae', '' => 'u'));
}
This would be no good for sorting, as thorn and eth aren't actually found under th and dh. Also especially redundant because of Unicode! Still, I'm sure somone can find use for it - perhaps to constrict filenames...
Mark
m dot frank at beam dot ag
22-Nov-2002 01:12
22-Nov-2002 01:12
to get the ascii equivalent of unicode characters simply use the
utf8_decode() function
marco dot colombo at nexor dot it
12-Nov-2002 02:20
12-Nov-2002 02:20
Suppose you're trying to remove any character not in your set, i've found this very helpfull:
function my_remove($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 $my_set.
Molok
bisqwit at iki dot fi
10-Aug-2002 05:18
10-Aug-2002 05:18
#!/bin/sh
# This shell script generates a strtr() call
# to translate from a character set to another.
# Requires: gnu recode, perl, php commandline binary
#
# Usage:
# Set set1 and set2 to whatever you prefer
# (multibyte character sets are not supported)
# and run the script. The script outputs
# a strtr() php code for you to use.
#
# Example is set to generate a
# cp437..latin9 conversion code.
#
set1=cp437
set2=iso-8859-15
result="`echo '<? for($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
17-Jul-2002 12:32
17-Jul-2002 12:32
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 $html_code the by Á , etc.
symlink23-remove-my-spleen at yahoo dot com
19-Apr-2002 04:33
19-Apr-2002 04:33
As noted in the str_rot13 docs, some servers don't provide the str_rot13() function. However, the presence of strtr makes it easy to build your own facsimile thereof:
if (!function_exists('str_rot13')) {
function str_rot13($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 05:08
23-Nov-2001 05:08
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.