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PHP strlen() Function

PHP String Reference PHP String Reference

Example

Return the length of the string "Hello":

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

Run example »

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!");
?>

Run example »

PHP String Reference PHP String Reference

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