The **`trim` function** removes white spaces and pre-defined characters from a string.

# Syntax
The general syntax is :
```php
trim(string, trim_string)
``` 
* `string` is the actual string
 * `trim_string` contains the string to be removed from the string

> **Note:**
If the second parameter is not mentioned, all of the following characters are removed:
>- "\0" - NULL
>- "\t" - tab
>- "\n" - new line
>- "\x0B" - vertical tab
>- "\r" - carriage return
>- " " - ordinary white space


# Implementation


## Example 1
The following example does not specify the second parameter of the print function:

<?php
$str = "        Educative is a website for learning new  languages!    ";
echo "String:".$str . "\n";
echo "Trimmed String:".trim($str);
?>

## Example 2
The following example defined the string to be trimmed from the string:

<?php
$str = "Python Programming!";
$trim_str="Python";
echo "String:".$str . "\n";
echo "Trimmed String:".trim($str,$trim_str);
?>

What does the trim function do in Php?

Removes white spaces and specific characters from a string using the trim function in PHP.