trim() function in PHP

The trim() function is used to remove whitespaces and other characters.

Syntax

trim(str, charlist):

Parameters

• str − Specify the string to check.

• charlist − Specifies which characters to remove. If this parameter isn’t used, then any of the following characters are removed −

  • "\0" - NULL

  • "\t" - tab

  • "\n" - new line

  • "\x0B" - vertical tab

  • "\r" - carriage return

Return

The trim() function returns the modified string.

Example

The following is an example −

<?php
   $str = "\n\nDemo text!\n\n";
   echo "Trim: " . trim($str);
?>

Output

The following is the output −

Trim: Demo text!

Example

Let us see another example −

<?php
   $mystr = "Demo text!";
   echo trim($mystr, "Dam!");
?>

Output

The following is the output −

emo text