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

Source: Internet
Author: User

  1. Ucwords ();
  2. Strtoupper ();
  3. Ucfirst ()
  4. 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:

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