PHP - Manual: IntlChar::isUUppercase
2024-12-21
(PHP 7, PHP 8)
IntlChar::isUUppercase — Check if code point has the Uppercase Unicode property
$codepoint
): ?boolCheck if a code point has the Uppercase Unicode property.
This is the same as IntlChar::hasBinaryProperty($codepoint, IntlChar::PROPERTY_UPPERCASE)
注意:
This is different than IntlChar::isupper() and will return
true
for more characters.
codepoint
The int codepoint value (e.g. 0x2603
for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}"
)
Returns true
if
codepoint
has the Uppercase Unicode property, false
if not. Returns null
on failure.
示例 #1 Testing different code points
<?php
var_dump(IntlChar::isUUppercase("A"));
var_dump(IntlChar::isUUppercase("a"));
var_dump(IntlChar::isUUppercase("Φ"));
var_dump(IntlChar::isUUppercase("φ"));
var_dump(IntlChar::isUUppercase("1"));
?>
以上例程会输出:
bool(true) bool(false) bool(true) bool(false) bool(false)
IntlChar::PROPERTY_UPPERCASE
官方地址:https://www.php.net/manual/en/intlchar.isuuppercase.php