(PHP 7, PHP 8)
IntlChar::isJavaSpaceChar — Check if code point is a space character according to Java
$codepoint): ?boolDetermine if the specified code point is a space character according to Java.
true for characters with general categories "Z" (separators), which does not include control codes (e.g., TAB or Line Feed).
codepointThe 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 is a space character according to Java, false if not. Returns null on failure.
示例 #1 Testing different code points
<?php
var_dump(IntlChar::isJavaSpaceChar("A"));
var_dump(IntlChar::isJavaSpaceChar(" "));
var_dump(IntlChar::isJavaSpaceChar("\n"));
var_dump(IntlChar::isJavaSpaceChar("\t"));
var_dump(IntlChar::isJavaSpaceChar("\u{00A0}"));
?>以上示例会输出：
bool(false) bool(true) bool(false) bool(false) bool(true)