PHP trim() Function
Topic: PHP String ReferencePrev|Next
Description
The trim() function strips whitespace and other characters from the beginning and end of a string.
The following table summarizes the technical details of this function.
| Return Value: | Returns the trimmed string. |
|---|---|
| Version: | PHP 4+ |
Syntax
The basic syntax of the trim() function is given with:
The following example shows the trim() function in action.
Example
Run this code »<?php
// Sample string
$str = " Hello World! ";
// Removing whitespace
echo trim($str);
?>Parameters
The trim() function accepts the following parameters.
| Parameter | Description |
|---|---|
| string | Required. Specifies the string to be trimmed. |
| strip_characters |
Optional. Specifies the list of all characters that you want to be stripped. If this parameter is not specified,
|
More Examples
Here're some more examples showing how trim() function actually works:
In the following example only space, tab and newline characters from the beginning and end of the string will be removed. The characters inside the string will remain unchanged.
Example
Run this code »<?php
// Sample string
$str = " \tHello\n World!\n ";
// Removing whitespace
echo trim($str);
?>In the following example only space, plus, and minus are removed from both end of the string.
Example
Run this code »<?php
// Sample string
$str = " ++\tHello World!--- ";
// Removing characters
echo trim($str, " +-");
?>
