(PHP 7, PHP 8)
IntlChar::isupper — Check if code point has the general category "Lu" (uppercase letter)
Determines whether the specified code point has the general category "Lu" (uppercase letter).
Nota:
This misses some characters that are also uppercase but have a different general category value. In order to include those, use IntlChar::isUUppercase().
codepoint
Um codepoint integer (por exemplo 0x2603
para U+2603 SNOWMAN), ou um caracter codificado como uma string UTF-8 (exemplo "\u{2603}"
)
Returns true
if
codepoint
is an Lu uppercase letter, false
if not.
Exemplo #1 Testando codepoints diferentes
<?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"));
?>
O exemplo acima irá imprimir:
bool(true) bool(false) bool(true) bool(false) bool(false)
IntlChar::PROPERTY_UPPERCASE