How to remove white spaces only beginning/end of a string using PHP ?

We have given a string and the task is to remove white space only from beginning of a string or end from a string str in PHP. In order to do this task, we have the following methods in PHP:

Method 1: Using ltrim() Method: The ltrim() method is used to strip whitespace only from the beginning of a string.

Syntax:

ltrim($string, $charlist)

Example :

PHP

<?php
// PHP program to remove white space
// from beginning of a string

$str = "  Geeks  for  Geeks   ";

// Using ltrim() function
// removes whitespaces from
// beginning of a string
$str = ltrim($str);

// Printing the result
echo $str;

$len = strlen($str);

echo "\nLength of String: ";
echo $len;
?>

Output

Geeks  for  Geeks   
Length of String: 20

Method 2: Using rtrim() Method: The rtrim() method is used to strip whitespace only from the end of a string.

Syntax:

rtrim($string, $charlist)

Example :

PHP

<?php
// PHP program to remove white space
// from the end of a string

$str = "  Geeks  for  Geeks   ";

// Using rtrim() function to
// remove whitespaces from
// end of a string
$str = rtrim($str);

// Printing the result
echo $str;

$len = strlen($str);
echo "\nLength of String : ";
echo $len;
?>

Output

  Geeks  for  Geeks
Length of String : 19