Problems caused by phpnamespace

{Code...}: How to call deftest1 instead of abctest1 in deftest2 without modifying the code of the abc namespace

  a . PHP_EOL;    }}class test2 {    public function hello(){        $obj = new test1;        //var_dump(get_class($obj)); //always abc\test1        $obj->hello();    }}namespace def;class test1 extends \abc\test1 {    public $a = ' bbb';}class test2 extends \abc\test2 {}(new test2)->hello();

Tutorial:
How to call def \ test1 instead of abc \ test1 in def \ test2 without modifying the abc namespace code

Reply content:

  a . PHP_EOL;    }}class test2 {    public function hello(){        $obj = new test1;        //var_dump(get_class($obj)); //always abc\test1        $obj->hello();    }}namespace def;class test1 extends \abc\test1 {    public $a = ' bbb';}class test2 extends \abc\test2 {}(new test2)->hello();

Tutorial:
How to call def \ test1 instead of abc \ test1 in def \ test2 without modifying the abc namespace code

The following section is modified as follows:

namespace def;class test1 extends \abc\test1 {    public $a = ' bbb';}class test2 extends test1 {}$a= new \def\test2();print_r($a->hello());