Check if code point is a base character

# IntlChar::isbase

(PHP 7)

IntlChar::isbase — Check if code point is a base character

### 説明

public static IntlChar::isbase ( mixed `$codepoint` ) : bool

Determines whether the specified code point is a base character. `TRUE` for general categories "L" (letters), "N" (numbers), "Mc" (spacing combining marks), and "Me" (enclosing marks).

> 注意:

> This is different from the Unicode definition in chapter 3.5, conformance clause D13, which defines base characters to be all characters (not Cn) that do not graphically combine with preceding characters (M) and that are neither control (Cc) or format (Cf) characters.

### パラメータ

`codepoint`

  コードポイントを表す integer 型の値 (例: U+2603 SNOWMAN を表す 0x2603)、あるいは UTF-8 文字列としてエンコードされた文字 (例: "\u{2603}")。

### 返り値

Returns `TRUE` if `codepoint` is a base character, `FALSE` if not.

### 例

例1 さまざまなコードポイントの例

`<?php
var_dump(IntlChar::isbase("A"));
var_dump(IntlChar::isbase("1"));
var_dump(IntlChar::isbase("\u{2603}"));
?>`

上の例の出力は以下となります。

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

### 参考

- IntlChar::isalpha() - Check if code point is a letter character
- IntlChar::isdigit() - Check if code point is a digit character