Understanding PHP strlen() Function: Syntax, Parameters, Return Value, and Examples

Basic Syntax

<code>strlen($string)</code>

Parameters: strlen() accepts a single required argument $string , which is the string whose length you want to measure.

Return Value: strlen() returns the length of the given string ($string) , counting all spaces and special characters.

Below are examples demonstrating the usage of the strlen() function.

Example 1:

<code>&lt;?php
    $str = "hello PHP";
    // Output the length of the string
    echo strlen($str);
?&gt;</code>

Output:

9

Example 2: Output length of a string containing special characters and escape sequences

<code>&lt;?php
    $str = "\n chetna ;";
    // Output the length of the string, which includes special characters and escape sequences
    echo strlen($str);
?&gt;</code>

Output:

10

Note: The escape sequence '\n' is counted as a single character.