具体影响见代码：
PHP
<?php
abstract class test {
protected static string $test;
public static function load( $test ): void {
$ref = new ReflectionClass( static::class );
$prop = $ref->getProperty( 'test' );
echo 'Calling ' . $ref->getMethod( 'load' )->getDeclaringClass()->getShortName() . '::load() via ' . $ref->getName() . PHP_EOL;
echo 'Current class is ' . $ref->getShortName() . PHP_EOL;
echo 'Current property belongs to ' . $prop->getDeclaringClass()->getShortName() . PHP_EOL;
static::$test = $test;
}
public static function get(): void {
$ref = new ReflectionClass( static::class );
echo 'Current class is ' . $ref->getShortName() . PHP_EOL;
echo 'Calling ' . $ref->getMethod( 'get' )->getDeclaringClass()->getShortName() . '::get() via ' . $ref->getName() . PHP_EOL;
echo 'Current property belongs to ' . $ref->getProperty( 'test' )->getDeclaringClass()->getShortName() . PHP_EOL;
echo 'Property value is ' . static::$test . PHP_EOL;
}
}
class a extends test {
public static function load( $test ): void {
parent::load( $test );
}
}
class b extends test {
public static function load( $test ): void {
parent::load( $test );
}
}
class c extends test {
protected static string $test;
public static function load( $test ): void {
parent::load( $test );
}
}
a::load( 'a' );
b::load( 'b' );
c::load( 'c' );
echo '---' . PHP_EOL;
a::get();
echo '---' . PHP_EOL;
c::get();
// Result:
// Calling a::load() via a
// Current class is a
// Current property belongs to test
// Calling b::load() via b
// Current class is b
// Current property belongs to test
// Calling c::load() via c
// Current class is c
// Current property belongs to c
// ---
// Current class is a
// Calling test::get() via a
// Current property belongs to test
// Property value is b
// ---
// Current class is c
// Calling test::get() via c
// Current property belongs to c
// Property value is c