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PHP strlen() Function

< PHP String Reference

Example

Return the length of the string "Hello":

<?php
echo strlen("Hello");
?>

Definition and Usage

The strlen() function returns the length of a string.

Syntax

strlen(string)

Parameter	Description
string	Required. Specifies the string to check

Technical Details

Return Value:	Returns the length of a string on success, and 0 if the string is empty
PHP Version:	4+
Changelog:	Before PHP 5.3.0, this function treated arrays as the string Array, thus returning a string length of 5 and emitting an E_NOTICE level error.

More Examples

Example 1

Return the length of the string "Hello World":

<?php
echo strlen("Hello world!");
?>

< PHP String Reference