Questions about the PHP constructor

class Test{    public $client;        public function __construct($obj)    {        $this->client = new Obj();         //    ......        //  一系列操作    }}// 代码1$client = (new Test())->client;$client->method(); //报错//代码2$test = new Test();$client = $test->client;$cilent->method(); //正常

What is the reason for the above code to appear? php5.6 is not a version issue.

Reply content:

class Test{    public $client;        public function __construct($obj)    {        $this->client = new Obj();         //    ......        //  一系列操作    }}// 代码1$client = (new Test())->client;$client->method(); //报错//代码2$test = new Test();$client = $test->client;$cilent->method(); //正常

What is the reason for the above code to appear? php5.6 is not a version issue.

What version of PHP is it?

(new Test($obj))->client

This expression was not supported until 5.4

class Foo {    public function method(){        echo 'hi';    }}class Test {    public $client;    public function __construct($obj){        $this->client = $obj;    }}$obj = new Foo();// 代码1$client = (new Test($obj))->client;$client->method();

