PHP string trim() function

PHP string trim() function is in-built function. It is used to strip whitespace from the beginning and end of a string or both side of a string.

Syntax:

Parameter	Description	Required/Optional
String	Specify the string to check.	Required
charlist	Specify the characters to remove. Following character: "\0" - NULL "\t" - tab "\n" - new line "\x0B" - vertical tab "\r" - carriage return " " - ordinary white space	Optional

Example 1

<?php
$str = "Hello PHP!";
echo "Your string is: ".$str ."<br>";
echo "By using trim() function :".trim($str,"Hed!");
?>

Output:

Your string is: Hello PHP!
By using trim() function :llo PHP

Example 2

<?php
$str = "  Hello Javatpoint!  ";
echo "Without trim() function: ".$str;
echo "<br>";
echo "With trim() function: ".trim($str);
?>

Output:

Without trim() function: Hello Javatpoint! 
With trim() function: Hello Javatpoint!

Example 3

<?php
$str = "\n\n\nHello Javatpoint\n\n\n";
echo "Without trim() function: " . $str;
echo "<br>";
echo "With trim() function:" . trim($str);
?>

Output:

Without trim() function: Hello Javatpoint 
With trim() function:Hello Javatpoint

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PHP string trim() function

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Example 1

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