strlen()
strlen() — Get string length.
Built-in function of PHP 8.5. The manual lists it as available in PHP 4, PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.
Signature
strlen(string $string): int
Parameters
| Parameter | Type | What it takes |
|---|---|---|
| $string | string | The string being measured for length. |
Return value
The length of the string in bytes.
Example
A runnable snippet:
$str = 'abcdef'; echo strlen($str), PHP_EOL; // 6 $str = ' ab cd '; echo strlen($str), PHP_EOL; // 7
See also
count(), iconv_strlen(), mb_strlen()
All PHP 8.5 built-in functions
Reference card built from the PHP manual page strlen() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.