substr
Note for trimming arrays that you can easily use array_map if you don't want to specify the characters.
<?php
var_dump(array_map('trim', Array(' Test ', 'Test ', ' Test')));
?>
trim
(PHP 4, PHP 5)
trim — Elimina espacios en blanco (u otros caracteres) del principio y final de una cadena
Descripción
string trim
( string $cadena
[, string $lista_caracteres
] )
La función devuelve una cadena con los espacios en blanco eliminados del principio y del final de la cadena indicada en el parámetro cadena . Si no se emplea el segundo parámetro (lista_caracteres ), la función trim() elimina los siguientes caracteres:
- " " (ASCII 32 (0x20)), un espacio en blanco.
- "\t" (ASCII 9 (0x09)), un tabulador.
- "\n" (ASCII 10 (0x0A)), una nueva linea.
- "\r" (ASCII 13 (0x0D)), un retorno de carro.
- "\0" (ASCII 0 (0x00)), el byte NUL.
- "\x0B" (ASCII 11 (0x0B)), un tabulador vertical.
Lista de parámetros
- cadena
-
La cadena a la que se eliminan los espacios en blanco (u otros caracteres)
- lista_caracteres
-
Además, con el parámetro lista_caracteres , se puede especificar la lista de caracteres que se quieren eliminar. El método consiste en enumerar todos los caracteres que se quieren eliminar, con la posibilidad de emplear .. para indicar un rango de caracteres.
Valores retornados
La cadena con los espacios en blanco (u otros caracteres) eliminados
Registro de cambios
| Versión | Descripción |
|---|---|
| 4.1.0 | Se incluyó el parámetro opcional lista_caracteres . |
Ejemplos
Example #1 Ejemplo de uso de trim()
<?php
$texto = "\t\tEn un lugar de la Mancha :) ... ";
echo trim($texto); // "En un lugar de la Mancha :) ..."
echo trim($texto, " \t."); // "En un lugar de la Mancha :)"
// elimina los caracteres ASCII de control que aparecen al principio y al final de $datos_binarios
// (desde el carácter de control 0 hasta el 31, ambos inclusive)
$datos_normales = trim($datos_binarios, "\x00..\x1F");
?>
Example #2 Limpiar valores de matrices con trim()
<?php
function limpia_valores(&$valor)
{
$valor = trim($valor);
}
$frutas = array('manzana','platano ', ' arandano ');
var_dump($frutas);
array_walk($frutas, 'limpia_valores');
var_dump($frutas);
?>
El resultado del ejemplo seria:
array(3) {
[0]=>
string(5) "manzana"
[1]=>
string(7) "platano "
[2]=>
string(11) " arandano "
}
array(3) {
[0]=>
string(5) "manzana"
[1]=>
string(6) "platano"
[2]=>
string(9) "arandano"
}
add a note
User Contributed Notestrim
chrisstocktonaz at gmail dot com
22-May-2009 07:39
22-May-2009 07:39
Andrew
15-May-2009 04:01
15-May-2009 04:01
It should be mentioned that if you use the second charlist parameter, you are overriding the defaults, not adding to them. You would need to either explicitly add them to the charlist or call trim twice, like so:
<?php
$str = trim(trim($str), './@#$');
?>
andycbio at gmail dot com
21-Apr-2009 10:37
21-Apr-2009 10:37
A cell read from an Excel sheet appeared to have a whitespace, and this was not getting trimmed. By converting to hex, it seems the char was a hard return.
Successfully trimmed it by:
<?php
trim($value, "\xc2\xa0");
?>
The actual hex values may vary by character set, check with bin2hex() for what's actually there.
info at jlammertink dot nl
08-Apr-2009 08:35
08-Apr-2009 08:35
I made this function to trim texts.
Removes al double horizontal and vertical whitespace chars.
<?php
function trimText($str)
{
$str = trim($str);
$str = preg_replace('/\h+/', ' ', $str);
$str = preg_replace('/\v{3,}/', PHP_EOL.PHP_EOL, $str);
return $str;
}
?>
Anonymous
21-Mar-2009 11:48
21-Mar-2009 11:48
small fix for the trimString function to proof against slash and backslash:
<?php
function trimString($input, $string){
$input = trim($input);
$string = str_replace("\\", "\\\\", $string);
$string = str_replace('/', '\\/', $string);
$startPattern = "/^($string)+/i";
$endPattern = "/($string)+$/i";
return trim(preg_replace($endPattern, '', preg_replace($startPattern,'',$input)));
}
?>
dev dot ivangc at gmail dot com
26-Feb-2009 02:23
26-Feb-2009 02:23
If what you need is delete a string instead of character, this function could help you:
<?php
function trimString($input, $string){
$input = trim($input);
$startPattern = "/^($string)+/i";
$endPattern = "/($string)+$/i";
return trim(preg_replace($endPattern, '', preg_replace($startPattern,'',$input)));
}
?>
Use:
<?php
echo trimString(" Hello world!. I said hello", "hello")
?>
Will return:
world!. I said
dead dot screamer at seznam dot cz
27-Jan-2009 11:29
27-Jan-2009 11:29
some of "trim array" functions
this trim strings, arrays and objects:
<?php
function trimA($str, $set=null)
{
if(is_Array($str) || is_Object($str))
foreach($str as &$s)
$s=trimA($s,$set);
elseif($set===null)$str=trim($str);
else $str=trim($str,$set);
return $str;
}
?>
mcblack
05-Dec-2008 10:44
05-Dec-2008 10:44
@Brizz
you can easily create a function to trim arrays... this works fine for me.
<?php
function trim_array( $array, $charset = 0 ) {
foreach ( $array as $str ) {
if( $charset !== 0 ) {
$out[] = trim( $str, $charset );
} else {
$out[] = trim( $str );
}
}
return $out;
}
$array = array( "foo\n\n", "\nfoo\n", "\tfoo" );
$trimmed = trim_array( $array );
print_r( $trimmed );
print "\n";
$array = array( "0bar0", "#bar#", "~bar~" );
$trimmed = trim_array( $array, "0#~" );
print_r( $trimmed );
?>
josecruz at josecruz dot com dot br
22-Nov-2008 01:50
22-Nov-2008 01:50
A simple function to clear extra white spaces along a string.
<?php
function TrimStr($str)
{
$str = trim($str);
for($i=0;$i < strlen($str);$i++)
{
if(substr($str, $i, 1) != " ")
{
$ret_str .= trim(substr($str, $i, 1));
}
else
{
while(substr($str,$i,1) == " ")
{
$i++;
}
$ret_str.= " ";
$i--; // ***
}
}
return $ret_str;
}
?>
[EDIT BY danbrown AT php DOT net: Contains a fix provided by (info AT deep-soft DOT com) to address the issue where "it deletes the first char after spaces (because of while)."]
colnector at colnect dot com
26-Aug-2008 01:21
26-Aug-2008 01:21
The following function will assist you in case you wish to trim a string but keep the parts trimmed. I'm using it to strip phrases for translation on my site.
Example:
cleanPhrase(' (this () is it)');
Will return:
Array
(
[left] => (
[right] => )
[clean] => this () is it
)
<?php
/**
* Trims some of the characters from the phrase
*
* @param string $phrase - to be "cleaned"
* @param string $dirtyChars - the characters that need be removed
* @return string
*/
public static function cleanPhrase($phrase, $dirtyChars = " \t\n()[]:.\"'") {
$len = strlen($phrase);
for($i=0; $i < $len; $i++) {
$pos = strpos($dirtyChars, substr($phrase, $i, 1));
if ($pos === false) break;
}
for($j=$len-1; $j >= 0; $j--) {
$pos = strpos($dirtyChars, substr($phrase, $j, 1));
if ($pos === false) break;
}
$res = array();
$res['left'] = substr($phrase, 0, $i);
$res['right'] = substr($phrase, $j+1);
$res['clean'] = substr($phrase, $i, $j-$i+1);
return $res;
}
?>
Brizz
23-Jun-2008 05:27
23-Jun-2008 05:27
Someone posted this over two years ago, but it is still just as valid today. Frankly, it should be added to the documentation on this page. This is NOT the functionality I would expect in this case.
With all this talk about trimming array values, it should be known that accidentally using the trim() function with an array() argument ...
<?php
$array = array(1, 2, 3);
$array = trim($array);
print_r($array); // prints "Array"
echo($array); // also prints "Array"
?>
... yields the string "Array"
aalaap at gmail dot com
18-Jun-2008 06:42
18-Jun-2008 06:42
If you want to remove all excessive spaces and leave just a single one, like the way HTML text gets rendered in the browser, this function (modified from one posted here earlier) will work:
function str_squeeze($test) {
return trim(ereg_replace( ' +', ' ', $test));
}
The result is that a string such as "hello___how_are__you_" (where the _ is a space) will result in a more sane "hello_how_are_you".
luciano[dot]longo[at]gmail
26-Apr-2008 05:17
26-Apr-2008 05:17
Yet another array trim, recursive too.
I think this one is pretty usefull, though it lacks charlist, you can add that functionality if you need to, it's not that hard ;)
Anyway, one feature that I added, and I find pretty usefull, is that it can splice an empty position if you want to
<?php
function array_trim_recursive(&$array, $splice_empty = true) {
foreach($array as $k => &$v) {
if(is_array($v)) {
array_trim_recursive($v, $splice_empty);
} else {
$array[$k] = trim($v);
iif(!$v && $splice_empty) {
array_splice($array, $k, 1);
}
}
}
}
?>
davidsteinsland [at] gmail [dot] com
25-Apr-2008 05:19
25-Apr-2008 05:19
I've noticed that many needs to remove multiple lines in the end of a string, so I made this function. Pretty easy, actually. It removes all unnecessary newlines (or something else, if $char is set)
<?php
function remove_unnecessary ($str, $char = "\n") {
while (true) {
if (substr ($str, -(strlen($char))) == $char) {
$str = substr ($str, 0, -(strlen($char)));
} else {
break;
}
}
return $str;
}
$Str = "Hello\nHello\n\n\n\n\n\n\n\n\n";
// Outputs: Hello\nHello
echo remove_unnecessary ($Str);
?>
me at robhaswell dot co dot uk
16-Apr-2008 11:50
16-Apr-2008 11:50
admin at semaster dot ru's array_trim function is flawed in that it will change the type of nulls and numeric variables (to strings).
Here is a better version, although it lacks charlist support:
<?php
function array_trim($var) {
if (is_array($var))
return array_map("array_trim", $var);
if (is_string($var))
return trim($var);
return $var;
}
?>
-Rob
carl at rusco dot com
24-Dec-2007 05:53
24-Dec-2007 05:53
as mentioned, a str_replace(' ', '', $string) does execute faster than Robin Leffmann's ereg_replace; however, the regular expression Leffmann supplied has the ability of also stripping out only -single- whitespaces as by his comment, whereas the blunt str_replace will simply sweep all of them away, single as cascading. one tool for each job.
Pinco Pallino
01-Sep-2007 07:08
01-Sep-2007 07:08
As already commented by thers the solution from Robin Leffmann to remove "all"
the spaces from a string not only does not trim the "other" chars besides plain
spaces but is at all not faster than jayoungh5's proposal.
The only faster way I can imagine of is:
function trimall($str, $charlist = " \t\n\r\0\x0B")
{
return str_replace(str_split($charlist), '', $str);
}
However jayoungh5's one might still be faster for very large sets of characters
to be stripped.
hkb at hkb dot it
24-Aug-2007 10:03
24-Aug-2007 10:03
I have made this simple function to trim the whole string instead of just the beginning and end...
<?php
function strTrimTotal($input) {
$input = trim($input);
for($i=0;$i<strlen($input);$i++) {
if(substr($input, $i, 1) != " ") {
$output .= trim(substr($input, $i, 1));
} else {
$output .= " ";
}
}
return $output;
}
?>
lxg
16-Aug-2007 12:26
16-Aug-2007 12:26
masteremployment's solution in a function, and with preg_replace() instead of ereg_replace():
<?php
function removeWhitespace($string)
{
if (!is_string($string))
return false;
$string = preg_quote($string, '|');
return preg_replace('| +|', ' ', $string);
}
?>
Hayley Watson
10-Aug-2007 05:49
10-Aug-2007 05:49
Robin Leffman's code could be improved further...
<?php
$string = 'This string has no whitespaces.';
echo str_replace(' ', '', $string );
?>
Of course, like Leffman's code, that only removes space characters, not necessarily all whitespace (or characters in some arbitrary $whiteSpace string). For that
<?php
function trimlrm ($hayStack, $whiteSpaceChars)
{
$char = $whiteSpaceChars[0];
$chars = str_repeat($char, strlen($whiteSpaceChars);
$trimmed = strtr($hayStack, $whiteSpaceChars, $chars)));
return str_replace($char, '', $trimmed);
}
?>
would probably work, but like the others, fails to give '..' the same specialness that it has in trim().
moehbass at gmail dot com
06-Jul-2007 07:48
06-Jul-2007 07:48
Responding to Robin Leffmann:
jayoungh5 wrote a function to trim whitespace on the left, on the right, in the middle, everywhere (Below). It iterates through the string's characters. Yours, claimed to be faster, uses a regex function. I think it should be slower since I believe that dealing with a regex is iterative in nature and add to that the possibility of recursion! Perhaps your function is shorter in code lines.
I am not absolutely positive, so take this as a clue but research for a more solid truth.
Robin Leffmann
27-Jun-2007 12:13
27-Jun-2007 12:13
Here's a faster way to do what's described below:
<?php
$string = 'This string has no whitespaces.';
echo ereg_replace( ' +', '', $string );
?>
Output: Thisstringhasnowhitespaces.
If you want it to replace only single whitespaces instead of both single and cascading dito, remove the + in the first parameter of ereg_replace().
Hayley
19-Mar-2007 10:36
19-Mar-2007 10:36
trim's code can of course be simplified with some use of the trim() function....
<?php
$str = " Words with lots of spaces ";
$str = preg_replace('/\s\s+/', ' ', trim($str));
?>
Doing the trim() first reduces the workload being put on the more expensive preg_replace().
24-Jan-2007 04:04
I use this to remove leading, trailing and "more than one" space in between words.
$pat[0] = "/^\s+/";
$pat[1] = "/\s{2,}/";
$pat[2] = "/\s+\$/";
$rep[0] = "";
$rep[1] = " ";
$rep[2] = "";
$str = " Words with lots of spaces ";
$str = preg_replace($pat,$rep,$str);
// Output
"Words with lots of spaces"
Piopier
12-Jan-2007 02:06
12-Jan-2007 02:06
It may be useful to know that trim() returns an empty string when the argument is an unset/null variable.
asbo/at\iserv/dot\net
19-Nov-2006 08:40
19-Nov-2006 08:40
If you need to trim a string from the beginning and end of a string, then this function maybe prove handy.
<?php
function lrclean($str,$rm) {
$i = strlen($rm);
do {
if (substr($str,0,$i) == $rm) {$str = substr($str,$i);}
} while (substr($str,0,$i) == $rm);
do {
if (substr($str,-$i,$i) == $rm) {$str = substr($str,0,-$i);}
} while (substr($str,-$i,$i) == $rm);
return $str;
}
// prints 'text'
echo lrclean('xyztextxyz','xyz');
?>
phazei at excite dot com
10-Jul-2006 11:39
10-Jul-2006 11:39
I had some issues using <? array_map('trim',$array) ?> when there was an array in array. All arrays were replaced by the string "Array", drove me crazy.
Hopefully this will help someone:
<?php
function trim_array($totrim) {
if (is_array($totrim)) {
$totrim = array_map("trim_array", $totrim);
} else {
$totrim = trim($totrim);
}
return $totrim;
}
?>
USE:
<?php
$trimmed_array = trim_array($untrimmed_array);
?>
This function should recurse all embeded arrays.
rchaube at staff dot atlantic dot net
18-Feb-2006 09:03
18-Feb-2006 09:03
I was accepting text pasted from a csv file into a textarea in my code. I found that even using trim was not able to get rid of the whitespace characters at the end of the string.
Finally, using this helped:
$result = trim($source,"\x7f..\xff\x0..\x1f");
Hope this saves someone few hours. All thanks to previous comment from HW for this
jonathan at abbett dot org
26-Jan-2006 05:07
26-Jan-2006 05:07
With all this talk about trimming array values, it should be known that accidentally using the trim() function with an array() argument ...
<?php
$array = array(1, 2, 3);
$array = trim($array);
print_r($array); // prints "Array"
echo($array); // also prints "Array"
?>
... yields the string "Array"
asharm4 at ilstu dot edu
17-Jan-2006 05:30
17-Jan-2006 05:30
This staetment removes the trailing and leading whitespaces from the string..Really useful when handling the form values submitted by a visitor or analyzing a log file.
$trimmed_string = preg_replace ( "/\s\s+/" , " " , $untrimmed_string );
Note : thsi would only remove leading and trailing whitespaces. For the whitespaces in the string use any of the above methods.
Martin Kealey
14-Dec-2005 10:10
14-Dec-2005 10:10
Using "trim" to minimize the format of a decimal number strikes me as awkward. I would just use:
$str += 0;
This even has the added benefit of ensuring that you have at least one digit (and thus have a valid number) even if the original was empty.
warhog at warhog dot net
07-Dec-2005 08:28
07-Dec-2005 08:28
I was wondering about much of the examples given below, but the current (2005-12-07) function definition in the manual is not correct.
The function trim is defined as
trim(string string [, string charlist])
you must give the string-parameter and you can optionally add a parameter charlist - these chars are the chars to strip from the beginning and the end of the file.
(its self-evident that the default of this parameter is "\n\t\r\h\v\0 ")
hope that'll help - and that the docs are updated.. i don't know since which php-version that optional parameter can be used - i know that it works with PHP >= 4.3 & >= 5.0 . Maybe it's beeing there since 10 years and just an enormous insider :-)
davis_utah at yahoo dot com
01-Sep-2005 06:30
01-Sep-2005 06:30
Just a word of caution when looping through a batch of strings (in the thousands or more). Using trim to take off a left over character (like a comma in a csv output) will result in a much slower execution. It is better to use a tiny bit of conditional logic instead.
I believe the reason this is the case is because of having to create a new spot in memory to temporarily handle the result of trim.
Hope this helps.
rifter at cox dot net
16-Jul-2005 07:49
16-Jul-2005 07:49
Chris wrote:
> Here's a neat function to trim off extraneous zeros and the > decimal, leaving important numbers intact:
> ...
Actually use:
<?php
...
return rtrim(trim($num, '0'), '.');
...
?>
This ensures that a left leading decimal place doesn't get removed i.e. 00.010 should return .01 and not 01.
chris dot cowart at gmail dot com
05-Jul-2005 05:20
05-Jul-2005 05:20
Here's a neat function to trim off extraneous zeros and the decimal, leaving important numbers intact:
<?php
function clean_num($num){
return trim(trim($num, '0'), '.');
}
echo clean_num('06000.3050');
echo clean_num('500.00');
?>
Output:
6000.305
500
I find it very handy to use when pulling data from decimal fields in MySQL and putting them into <input> fields. Makes everything cleaner :)
15-Jun-2005 04:54
here's a heads up folks.
in the event that you want to check the result of a trim for being empty the following code fails::
$emptyvar = " ";
if ( empty(trim($emptyvar)) )
{
echo "It was empty";
}
this code works as expected::
$emptyvar = " ";
$check = trim($emptyvar);
if ( empty($check) )
{
echo "It was empty";
}
okumurya at hotmail dot com
05-Jun-2005 11:01
05-Jun-2005 11:01
fread/fwrite blocks program when no data available.
so, you consider use select system call.
following is example.
<?php
/**
*
* write/read pipe
*
* @param resource $w_fp write file handle
* @param resource $r_fp read file handle
* @param string $input
* @return string
*/
function _writeread_pipe(&$w_fp, &$r_fp, $input) {
$output = '';
$write_bytes = 0;
//
while (True) {
if (!isset($r_fp) && !isset($w_fp)) break;
$read = isset($r_fp) ? array($r_fp) : Null;
$write = isset($w_fp) ? array($w_fp) : Null;
// select pipes
$r = stream_select($read,
$write,
$except = Null,
30
);
if ($r === False) {
return PEAR::raiseError('process timeout');
}
// read pipe
if (isset($read) && isset($read[0])) {
do {
$buf = fread($r_fp, 1024);
if (strlen($buf) == 0) {
fclose($r_fp);
$r_fp = Null;
break;
}
$output .= $buf;
} while (True);
}
// write pipe
if (isset($write) && isset($write[0])) {
$r = fwrite($w_fp, substr($input, $write_bytes));
if ($r === False) {
return PEAR::raiseError('process write error');
}
$write_bytes += $r;
if ($write_bytes == strlen($input)) {
fclose($w_fp);
$w_fp = Null;
}
}
}
return $output;
}
?>
dmr37 at cornell dot edu
17-May-2005 07:47
17-May-2005 07:47
Note that manithu's post on 29-Mar-2005 02:49 for identifying strings that only contain whitespaces will also identify strings like "0" and " 0 " as being empty. If you want to check whether something ONLY has whitespaces, use the following:
<?php
if (trim($foobar)=='') {
echo 'The string $foobar only contains whitespace!';
}
?>
admin at semaster dot ru
31-Mar-2005 03:37
31-Mar-2005 03:37
Another recursive trim function for multi-dimensional arrays ( uses only trim function :)
function array_trim($arr, $charlist=null){
foreach($arr as $key => $value){
if (is_array($value)) $result[$key] = array_trim($value, $charlist);
else $result[$key] = trim($value, $charlist);
}
return $result;
}
manithu
29-Mar-2005 07:49
29-Mar-2005 07:49
An faster (and eleganter) way than using regular expressions to check if a string only contains whitespaces is to use trim().
Example:
<?php
if (!trim($foobar)) {
echo 'The string $foobar is empty!';
}
?>
I hope this helps somebody.
04-Mar-2005 06:25
It is important to stress that trim() only removes whitespace characters from the *beginning* and *end* of str. To remove whitespace characters embedded within a string (newlines, for instance) you can use str_replace(), searching for and destroying both \n and \r characters.
Hayley Watson
08-Feb-2005 12:46
08-Feb-2005 12:46
Another way to trim all the elements of an array
<?php
$newarray = array_map('trim', $array);
?>
abderzack host provider hotmail dot com
12-Nov-2004 03:44
12-Nov-2004 03:44
To eliminate all the empty strings from my array, I used the array_filter, that way :
1.
I defined a function returning true iff the passed as parameter string is NOT empty.
function notEmpty($string)
{
return !empty($string);
}
2.Use array filter :
$myarray = array_filter($myarray ,"notEmpty");
That's it.
Of course, if you want to prove your mama you can write unreadable code, you can create an anonymous function, by using the create_function, instead of declaring the function notEmpty.
Hope that will help you.
webmaster __AT__ digitalanime __DOT__ nl
26-May-2004 09:50
26-May-2004 09:50
To:
mrizzo at advancedsl dot com dot ar
And what about array_map()? :)
<?php
$myarray = array(
'hello' => ' bye ',
'hey' => ' howdie',
'haai' => ' today'
);
array_map('trim', $myarray);
?>
:)
jubi at irc dot pl
20-Apr-2004 01:48
20-Apr-2004 01:48
To remove multiple occurences of whitespace characters in a string an convert them all into single spaces, use this:
<?
$text = preg_replace('/\s+/', ' ', $text);
?>
------------
JUBI
http://www.jubi.buum.pl
mrizzo at advancedsl dot com dot ar
16-Jul-2003 09:00
16-Jul-2003 09:00
About trim all elements in an array.
array_filter($db, 'trim') doesn't work becouse it does NOT modify array's elements, it only returns a copy from those elements which return true on the callback function.
I think that:
foreach ($db as $key=>$value) { $db[$key]=trim($value); }
still being the best option.
rwelti at yahoo dot com
03-Jul-2003 12:45
03-Jul-2003 12:45
Regarding the editor's note to rhelic above about how to trim all elements in an array:
I wanted a perl "chomp" of newlines for all elements in an array.
I tried array_filter for a long time, but rhelic's straightforward way is what worked.
// chomp newlines off all elements in stations array
$stations = array_filter($stations, 'trim'); // editor's way - nope
foreach ($stations as $key => $value) {
$stations[$key] = trim($value); } // works fine
using PHP 4.3.1 on Solaris
HW
06-Jun-2003 01:32
06-Jun-2003 01:32
You can combine character ranges and individual characters in trim()'s second argument (ditto for ltrim and rtrim). All of the specified characters and ranges will be used concurrently (i.e., if a character on either end of the string matches any of the specified charaters or character ranges, it will be trimmed). The characters and character ranges can be in any order (except of course that the character ranges need to be specified in increasing order) and may overlap.
E.g., trim any nongraphical non-ASCII character:
trim($text,"\x7f..\xff\x0..\x1f");
olivierdsm at hotmail dot com
02-Jun-2003 05:42
02-Jun-2003 05:42
I just wanted to say that when you want to do a LDAP query based on a form value (i mean something like : <form method="POST" action="script_createnewticket.php" name="demande2">) dynamicaly updated from a popup javascript , (for example <a onclick=" opener.document.forms['demande2'].elements['thename3'].value='my name') it doesn't work.
It took me 2 days to find out that when you use trim, to "convert" the value, then it works.
-------------------------
$thename4=trim($thename3);
$ds=ldap_connect("$myldapserver"); // connects to the LDAP SERVER
if (!($ds = ldap_connect("$myldapserver") ) ) {
die ("Could not connect to LDAP server");
}
$r=ldap_bind($ds, "cn=".$NTusername, $NTpassword);
$sr = ldap_search($ds, ' ', "uid=".$thename4);
$info = ldap_get_entries($ds, $sr);
-------------------------------------
only on this case you will get results.
Strange and good to know
bishop
25-Apr-2003 10:56
25-Apr-2003 10:56
[Editor: I botched my last note; please delete and use this one]
Non-breaking spaces can be troublesome with trim (as per an earlier comment):
// turn some HTML with non-breaking spaces into a "normal" string
$myHTML = " abc";
$converted = strtr($myHTML, array_flip(get_html_translation_table(HTML_ENTITIES, ENT_QUOTES)));
// this WILL NOT work as expected
// $converted will still appear as " abc" in view source
// (but not in od -x)
$converted = trim($converted);
// are translated to 0xA0, so use:
$converted = trim($converted, "\xA0");
// PS: Thanks to John for saving my sanity!
Joshua dot Logsdon at ohiou dot edu
30-Jan-2003 11:51
30-Jan-2003 11:51
In response to the line mentioned above...
$clean = trim($binary,"\0x00..\0x1F");
I was also able to get
$clean = trim($binary,"\0x00-\0x1F");
to function.
daggillies at yahoo dot com
03-Jun-2002 06:57
03-Jun-2002 06:57
NOTE:
All the above examples using ereg_replace with an escape code of \v are BROKEN! \v is NOT an escape code in PHP. Using a regexp of \v e.g.
$str=ereg_replace("[\r\t\n\v]","",$str);
will remove any instances of the letter 'v' from your string. So 'Activity' becomes 'Actiity'. Probably not what you want.
Here is a small function I use to strip whitespace from the end of strings and squash repeated whitespace down to a single space in the middle of strings:
function wsstrip(&$str)
{
$str=ereg_replace (' +', ' ', trim($str));
$str=ereg_replace("[\r\t\n]","",$str);
}
David Gillies
San Jose
Costa Rica
j dot metzger at steptown dot com
26-May-2002 05:21
26-May-2002 05:21
Be careful when you use the charlist with the hex-codes...
use e.g. \x22 instead of \0x22 (this last thing won't work).
An example to strip quotes ' " ' (double quotes) and " ' " (single quotes) is to do this:
$example[0]='"hello"';
$example[1]="'baby'"
foreach ($example as $key => $val)
$example[$key]=trim($val,"\x22\x27");
# this works brilliant, but be aware:
# $example[$key]=trim($val,"\0x22\0x27");
# won't work !!!
-> tested on php 4.2.1
REMOVETHISNOSPAMkilling at bluecarrots dot com
19-Mar-2002 05:30
19-Mar-2002 05:30
If you want to totally stop windows (dunno about other os's) peeps from adding spaces (say, you need to check there name against a special one to stop impersonations) use this:
$nick = ereg_replace("[\r\n\t\v\ ]", "", trim($nick));
It has the alt code 0160 added to it
tbm.at.home.dot.nl
14-Mar-2002 07:30
14-Mar-2002 07:30
Windows uses two characters for definining newlines, namely ASCII 13 (carriage return, "\r") and ASCII 10 (line feed, "\n") aka CRLF. So if you have a string with CRLF's, trim() won't recognize them as being one newline. To solve this you can use str_replace() to replace the CRLF's with with a space or something.
<?php
// string with bunch of CRLF's
$my_string = "Liquid\r\nTension Experiment\r\n\r\n\r\n";
// replace CRLF's with spaces
$my_wonderful_string = str_replace("\r\n", " ", $my_string);
// would result in "Liquid Tension Experiment "
// or just delete the CRLF's (by replacing them with nothing)
$my_wonderful_string = str_replace("\r\n", "", $my_string);
// would result in "LiquidTension Experiment"
?>