IntlChar::isJavaIDPart

(PHP 7, PHP 8)

IntlChar::isJavaIDPart — Check if code point is permissible in a Java identifier

说明

public static IntlChar::isJavaIDPart(int|string $codepoint): ?bool

Determines if the specified character is permissible in a Java identifier.

In addition to IntlChar::isIDPart(), true for characters with general category "Sc" (currency symbols).

参数

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}")

返回值

Returns true if codepoint may occur in a Java identifier, false if not. Returns null on failure.

示例

示例 #1 Testing different code points

<?php
var_dump(IntlChar::isJavaIDPart("A"));
var_dump(IntlChar::isJavaIDPart("$"));
var_dump(IntlChar::isJavaIDPart("\n"));
var_dump(IntlChar::isJavaIDPart("\u{2603}"));
?>

以上示例会输出：

bool(true)
bool(true)
bool(false)
bool(false)

参见