PHP ReflectionClass getStaticPropertyValue()用法及代碼示例

ReflectionClass::getStaticPropertyValue()函數是PHP中的內置函數，用於返回靜態屬性的值。

用法:

mixed ReflectionClass::getStaticPropertyValue( string $name, mixed &$def_value )

參數：此函數接受單個參數名稱，該名稱是指定靜態屬性的名稱。

返回值：此函數返回靜態屬性的值。

以下示例程序旨在說明PHP中的ReflectionClass::getStaticPropertyValue()函數：

示例1:

<?php 
   
// Defining a class named as Departments 
class Departments { 
    static $Dept1 = 'CSE'; 
    private static $Dept2 = 'ECE'; 
    public static $Dept3 = 'EE'; 
} 
   
// Using ReflectionClass over the class Departments 
$ReflectionClass = new ReflectionClass('Departments'); 
   
// Calling getStaticPropertyValue() function 
$A = $ReflectionClass->getStaticPropertyValue('Dept3'); 
   
// Getting the value of the static property. 
var_dump($A); 
?>

輸出：

string(2) "EE"

示例2:

<?php 
   
// Defining a class named as Departments 
class Departments { 
    static $Dept1 = 'CSE'; 
    static $Dept2 = 'ECE'; 
    public static $Dept3 = 'EE'; 
} 
   
// Using ReflectionClass over the class Departments 
$ReflectionClass = new ReflectionClass('Departments'); 
   
// Calling getStaticPropertyValue() functions 
$A = $ReflectionClass->getStaticPropertyValue('Dept1'); 
$B = $ReflectionClass->getStaticPropertyValue('Dept2'); 
$C = $ReflectionClass->getStaticPropertyValue('Dept3'); 
   
// Getting the value of the static property. 
var_dump($A); 
var_dump($B); 
var_dump($C); 
?>

輸出：

string(3) "CSE"
string(3) "ECE"
string(2) "EE"

參考： https://www.php.net/manual/en/reflectionclass.getstaticpropertyvalue.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 getStaticPropertyValue() 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。