IntlChar::isupper

(PHP 7)
Check if code point has the general category "Lu" (uppercase letter)
public static bool IntlChar::isupper ( mixed $codepoint )

Determines whether the specified code point has the general category "Lu" (uppercase letter).

Note:

This misses some characters that are also uppercase but have a different general category value. In order to include those, use IntlChar::isUUppercase().

Parameters:
codepoint

The integer codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")

Returns:

Returns TRUE if codepoint is an Lu uppercase letter, FALSE if not.

Examples:
Testing different code points
<?php
var_dump(IntlChar::isupper("A"));
var_dump(IntlChar::isupper("a"));
var_dump(IntlChar::isupper("Φ"));
var_dump(IntlChar::isupper("φ"));
var_dump(IntlChar::isupper("1"));
?>

The above example will output:

bool(true)
bool(false)
bool(true)
bool(false)
bool(false)
See also:

IntlChar::islower() -

IntlChar::istitle() -

IntlChar::tolower() -

IntlChar::toupper() -

doc_php
2016-02-24 15:58:17
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