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PHP strlen() Function

PHP String Reference Manual

Example

The function returns the length of the string "Hello":


Definition and Usage

The strlen() function returns the length of a string. For Chinese string processing, use the mb_strlen() function.


Syntax

Parameter Description
string Required. Specifies the string to check.

Technical Details

Return Value: Returns the length of the string if successful, or 0 if the string is empty.
PHP Version: 4+
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Changelog: Before PHP 5.3.0, this function treated arrays as the string "Array", returning a string length of 5 and generating an E_NOTICE level error.
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More Examples

Example 1

Returns the length of the string "Hello World":


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