# ReflectionConstant::getExtensionName

(PHP 8 >= 8.5.0)

ReflectionConstant::getExtensionName — Gets name of the defining extension

### 说明

public ReflectionConstant::getExtensionName(): string|false

Gets the name of the extension which defined the constant.

### 参数

此函数没有参数。

### 返回值

The name of the extension which defined the constant, or `false` for user-defined constants.

### 示例

示例 #1 Basic usage of ReflectionConstant::getExtensionName()

`<?php
var_dump((new ReflectionConstant('SQLITE3_TEXT'))->getExtensionName());
?>`

以上示例会输出：

    string(7) "sqlite3"

### 参见

- ReflectionConstant::getExtension() - Gets ReflectionExtension of the defining extension

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