PHP 8 reference · String Functions

PHP lcfirst() Function

Make the first character of a string lowercase, leaving the rest unchanged. Handy for turning PascalCase into camelCase.

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Syntax

lcfirst(string $string): string

Parameter	Description
`string`	The input string.

The string with its first character lowercased.

Lowercase the first letterTry it yourself

<?php
echo lcfirst("HelloWorld"), "\n";
echo lcfirst("ABC"), "\n";

Output

helloWorld
aBC

PascalCase to camelCaseTry it yourself

<?php
$class = "UserProfile";
echo lcfirst($class) . "Service", "\n";

Output

userProfileService

Version	Change
PHP 5.3	Added

ucfirst() · Make the first character of a string uppercase and leave the rest as it is. Only ASCII letters change.
strtolower() · Convert every ASCII letter in a string to lowercase. Since PHP 8.2 it ignores the locale; use mb_strtolower() for é, Ü and others.
PHP Strings · tutorial