strtoupper(3) [php man page]

STRTOUPPER(3)								 1							     STRTOUPPER(3)

strtoupper - Make a string uppercase

SYNOPSIS

       string strtoupper (string  $string)

DESCRIPTION

	Returns $string with all alphabetic characters converted to uppercase.

	Note  that  'alphabetic' is determined by the current locale. For instance, in the default "C" locale characters such as umlaut-a (a) will
       not be converted.

PARAMETERS

	      o $string
		- The input string.

RETURN VALUES

	Returns the uppercased string.

EXAMPLES

       Example #1

	      strtoupper(3) example

	      <?php
	      $str = "Mary Had A Little Lamb and She LOVED It So";
	      $str = strtoupper($str);
	      echo $str; // Prints MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
	      ?>

NOTES

       Note

	      This function is binary-safe.

SEE ALSO

       strtolower(3), ucfirst(3), ucwords(3), mb_strtoupper(3).

PHP Documentation Group 													     STRTOUPPER(3)

MB_STRTOLOWER(3)							 1							  MB_STRTOLOWER(3)

mb_strtolower - Make a string lowercase

SYNOPSIS

       string mb_strtolower (string  $str, [string  $encoding = mb_internal_encoding()])

DESCRIPTION

	Returns $str with all alphabetic characters converted to lowercase.

PARAMETERS

	      o $str
		- The string being lowercased.

	      o $encoding
		-The $encoding parameter is the character encoding. If it is omitted, the internal character encoding value will be used.

RETURN VALUES

       $str with all alphabetic characters converted to lowercase.

UNICODE

	For more information about the Unicode properties, please see http://www.unicode.org/unicode/reports/tr21/.

	By  contrast  to strtolower(3), 'alphabetic' is determined by the Unicode character properties. Thus the behaviour of this function is not
       affected by locale settings and it can convert any characters that have 'alphabetic' property, such as A-umlaut (A).

EXAMPLES

       Example #1

	      mb_strtolower(3) example

	      <?php
	      $str = "Mary Had A Little Lamb and She LOVED It So";
	      $str = mb_strtolower($str);
	      echo $str; // Prints mary had a little lamb and she loved it so
	      ?>

       Example #2

	      mb_strtolower(3) example with non-Latin UTF-8 text

	      <?php
	      $str = "Txiotn a
nE Baos unuvn yn, dpaokeCei unp vw0po kuvs";
	      $str = mb_strtolower($str, 'UTF-8');
	      echo $str; // Prints txiotn a
nE Baos unuvn yn, dpaokeCei unp vw0po kuvs
	      ?>

SEE ALSO

       mb_strtoupper(3), mb_convert_case(3), strtolower(3).

PHP Documentation Group 													  MB_STRTOLOWER(3)