[Single selection] capitalize all the letters in the string:

2. Ucwords ();
4. Strtoupper ();
6. Ucfirst ()
8. Strtolower ();

PHP ucwords () function

PHP String function

Instance

Convert the first character of each word to uppercase:

<?phpecho ucwords ("Hello World");? >

Running an instance

Definition and usage

The Ucwords () function converts the first character of each word in a string to uppercase.

Note: This function is binary safe.

Related functions:

• Lcfirst ()-Converts the first character in a string to lowercase
• Strtolower ()-Converts a string to lowercase
• Strtoupper ()-Converts a string to uppercase
• Ucfirst ()-Converts the first character in a string to uppercase

Grammar

Ucwords (string)

Parameters	Description
String	Necessary. Specifies the string to convert.

Technical details

return value:	Returns the converted string.
PHP version:	4 +

PHP String function

PHP Strtoupper () function

PHP String function

Definition and usage

The Strtoupper () function converts a string to uppercase.

Grammar

Strtoupper (String)

Parameters	Description
String	Necessary. Specifies the string to convert.

Example

strtoupper("Hello WORLD!");? >

Output:

HELLO world!

PHP String function

PHP Ucfirst () function

PHP String function

Instance

Convert the first character of "Hello" to uppercase:

<?phpecho ucfirst ("Hello world!");? >

Running an instance

Definition and usage

The Ucfirst () function converts the first character in a string to uppercase.

Related functions:

• Lcfirst ()-Converts the first character in a string to lowercase
• Strtolower ()-Converts a string to lowercase
• Strtoupper ()-Converts a string to uppercase
• Ucwords ()-Converts the first character of each word in a string to uppercase

Grammar

Ucfirst (string)

Parameters	Description
String	Necessary. Specifies the string to convert.

Technical details

return value:	Returns the converted string.
PHP version:	4 +

PHP String function

PHP Reference manual PHP test php strtolower () function

PHP String function

Instance

Convert all characters to lowercase:

<?phpecho strtolower ("Hello World");? >

Running an instance

Definition and usage

The Strtolower () function converts a string to lowercase.

Note: This function is binary safe.

Related functions:

• Lcfirst ()-Converts the first character in a string to lowercase
• Strtoupper ()-Converts a string to uppercase
• Ucfirst ()-Converts the first character in a string to uppercase
• Ucwords ()-Converts the first character of each word in a string to uppercase

Grammar

Strtolower (string)

Parameters	Description
String	Necessary. Specifies the string to convert.

Technical details

return value:	Returns a string converted to lowercase.
PHP version:	4 +

PHP String function

Correct answer:

[Single selection] capitalize all the letters in the string: