PHP strlen() Function

Last Updated : 17 Mar 2025

The strlen() function is predefined function of PHP. It is used to find the length of string or returns the length of a string including all the whitespaces and special character.

Syntax:

Parameter	Description	Required/Optional
String	Specify the string to check.	Required.

Example 1

<?php
$str = 'Javatpoint';
echo "Your String is:".$str;
echo "<br>";
echo "By using 'strlen()' function:".strlen($str); // 10
?>

Output:

Your String is:Javatpoint
By using 'strlen()' function:10

Example 2

<?php
$str = 'Java T point';
echo "Your String is:".$str;
echo "<br>";
echo "By using 'strlen()' function:".strlen($str); 
// output =12 [including whitespace]
?>

Output:

Your String is:Java T point
By using 'strlen()' function:12

Example 3

<?php
$str = 'P    H    P';
echo "Your String is:".$str;
echo "<br>";
echo "By using 'strlen()' function:".strlen($str); 
// output =11 [including whitespace]
?>

Output:

Your String is:P H P
By using 'strlen()' function:11

Reference:

http://php.net/manual/en/function.strlen.php

See Also:

str_split() : It is used to split a string into an array.
str_word_count() : It is used to count the number of words in a string.
strcasecmp() : It is used to compare two strings.

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