strtoupper

(PHP 4, PHP 5, PHP 7, PHP 8)

strtoupperMake a string uppercase

Description

strtoupper(string $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 (ä) 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

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