strtoupper

PHP 4, PHP 5, PHP 7, PHP 8
strtoupper - Make a string uppercase

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 (รค) will not be converted.

Parameters

string

The input string.

Return Values

Returns the uppercased string.

Notes

Note:

This function is binary-safe.

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Function strtoupper:

Strings Functions

Most used PHP functions