PHP: trim() function
Description
The trim() function is used to remove the white spaces and other predefined characters from the left and right sides of a string.
Version:
(PHP 4 and above)
Syntax:
trim(string_name, char_list)
Parameters:
Name | Description | Required / Optional |
Type |
---|---|---|---|
string_name | The string to be trimmed. | Required | String |
char_list | Specifies the character(s) to remove. Without this
remove the following
" " an
ordinary space. "\0" - the NUL-byte. "\t" - tab. "\n" - line feed. "\x0B" - a vertical tab. "\r" - a carriage return. |
Optional | String |
Return value:
The trimmed string.
Value Type: String.
Pictorial Presentation
Example - 1:
<?php
$string_name=' Welcome to w3resource.com ';
$new_string=trim($string_name);
echo $new_string;
?>
Output:
Welcome to w3resource.com
View the example in the browser
Example - 2 :
<?php
$string_name=" Welcome to w3resource.com";
$new_string=trim($string_name,"\t");
//echo $new_string;
var_dump($new_string);
?>
Output :
string(25) "Welcome to w3resource.com"
View the example in the browser
See also
PHP: Tips of the Day
In PHP, there are two versions of logical AND and OR operators.
Operator | True if |
---|---|
$a and $b | Both $a and $b are true |
$a && $b | Both $a and $b are true |
$a or $b | Either $a or $b is true |
$a || $b | Either $a or $b is true |
Note that the && and || opererators have higher precedence than and and or. See table below:
Evaluation | Result of $e | Evaluated as |
---|---|---|
$e = false || true | True | $e = (false || true) |
$e = false or true | False | ($e = false) or true |
Because of this it's safer to use && and || instead of and and or.
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