PHP | ucfirst() Function

The ucfirst() function is a built-in function in PHP which takes a string as an argument and returns the string with the first character in Upper Case and all other characters remain unchanged.

Syntax:

ucfirst($string)

Parameter: The function accepts only one parameter $string which is mandatory. This parameter represents the string whose first character will be changed to uppercase.



Return Value: The function returns the same string only by changing the first character to upper case of the passed argument $string.

Examples:

Input : "geeks for geeks"
Output : Geeks for geeks

Input : "Chetna Agarwal"
Output : Chetna Agarwal

Below programs illustrate the ucfirst() function in PHP:

Program 1: The program below demonstrates the use of ucfirst() function.

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<?php
    // PHP program that demonstrates the 
    // use of ucfirst() function 
      
    $str = "geeks for geeks";
      
    // converts the first case to upper case 
    // and prints the string
    echo(ucfirst($str)); 
?>

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Output:

Geeks for geeks

Program 2: The program below demonstrates the use of ucfirst() function when the starting character is in upper-case.

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<?php
    // PHP program that demonstrates the 
    // use of ucfirst() function when 
    // the first case is already in uppercase
      
    $str = "Chetna Agarwal";
      
    // already the first character is in upper case 
    // so prints the same string only
    echo(ucfirst($str)); 
?>

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Output:

Chetna Agarwal

Reference:
http://php.net/manual/en/function.ucfirst.php



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