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
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}")
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
← IntlChar::isULowercase
IntlChar::isUUppercase →
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