(PHP 7, PHP 8)
IntlChar::isUUppercase — Check if code point has the Uppercase Unicode property
Check 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
truefor more characters.
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"));
?>以上示例会输出：
bool(true) bool(false) bool(true) bool(false) bool(false)
IntlChar::PROPERTY_UPPERCASE