ReflectionClass::getConstant()函數是PHP中的內置函數,用於返回定義的常量的值。
用法:
mixed ReflectionClass::getConstant( string $name )
參數:此函數接受參數Name,它是已定義常量的名稱。
返回值:此函數返回定義的常量的值。
以下示例程序旨在說明PHP中的ReflectionClass::getConstant()函數:
示例1:
<?php
// Declaring a class named as Department
class Department {
// Defining a constant
const First = "CSE";
}
// Using the ReflectionClass() function
// over the Department class
$A = new ReflectionClass('Department');
// Calling the getConstant() function over
// First constant
$a = $A->getConstant('First');
// Getting the value of the defined constant
print_r($a);
?>
輸出:
CSE
示例2:
<?php
// Declaring a class named as Company
class Company {
// Defining a constant
const First = "GeeksforGeeks";
const Second = "GFG";
const Third = "gfg";
}
// Using the ReflectionClass() function
// over the Company class
$A = new ReflectionClass('Company');
// Calling the getConstant() function over
// the defined constants and
// getting the value of the defined constants
print_r($A->getConstant('First'));
echo("\n");
print_r($A->getConstant('Second'));
echo("\n");
print_r($A->getConstant('Third'));
?>
輸出:
GeeksforGeeks GFG gfg
參考: https://www.php.net/manual/en/reflectionclass.getconstant.php
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注:本文由純淨天空篩選整理自Kanchan_Ray大神的英文原創作品 PHP | ReflectionClass getConstant() Function。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。