strtoupper

Make a string uppercase

Description

string strtoupper ( string $string )

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 (รค) will not be converted.

Parameters

string

The input string.

Return Values

Returns the uppercased string.

Examples

Example #1 strtoupper 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
  • ucfirst
  • ucwords
  • mb_strtoupper