lcfirst()
lcfirst() — Make a string's first character lowercase.
Built-in function of PHP 8.5. The manual lists it as available in PHP 5 >= 5.3.0, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.
What it does
Returns a string with the first character of string lowercased if that character is an ASCII character in the range "A" (0x41) to "Z" (0x5a).
Signature
lcfirst(string $string): string
Parameters
| Parameter | Type | What it takes |
|---|---|---|
| $string | string | The input string. |
Return value
Returns the resulting string.
Example
A runnable snippet:
$foo = 'HelloWorld'; echo lcfirst($foo), PHP_EOL; // helloWorld $bar = 'HELLO WORLD!'; echo lcfirst($bar), PHP_EOL; // hELLO WORLD! echo lcfirst(strtoupper($bar)), PHP_EOL; // hELLO WORLD!
Changelog
| Version | Change |
|---|---|
| 8.2.0 | Case conversion no longer depends on the locale set with setlocale(). Only ASCII characters will be converted. |
See also
ucfirst(), strtolower(), strtoupper(), ucwords()
All PHP 8.5 built-in functions
Reference card built from the PHP manual page lcfirst() (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.