IntlChar::isupper
IntlChar::isupper
(PHP 7)
IntlChar::isupper — Check if code point has the general category "Lu" (uppercase letter)
Description
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
Return Values
Returns TRUE if codepoint is an Lu uppercase letter, FALSE if not.
Examples
Example #1 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() - Check if code point is a lowercase letter
- IntlChar::istitle() - Check if code point is a titlecase letter
- IntlChar::tolower() - Make Unicode character lowercase
- IntlChar::toupper() - Make Unicode character uppercase
IntlChar::PROPERTY_UPPERCASE
© 1997–2017 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/intlchar.isupper.php
