syntax-error - php 7 支持按引用传递吗？

Question

最近我们将 PHP 5.6 迁移到 PHP 7

现在下面的代码抛出 $this->a =& new test($this->f);

Parse error: syntax error, unexpected 'new' (T_NEW) 

有任何想法吗？我可以使用哪些替代方案？

Answer 1

根据 PHP7 不兼容的更改:http://php.net/manual/en/migration70.incompatible.php

New objects cannot be assigned by reference

The result of the new statement can no longer be assigned to avariable by reference: <?php class C {} $c =& new C; ?>

Output of the above example in PHP 5:

Deprecated: Assigning the return value of new by reference isdeprecated in /tmp/test.php on line 3

Output of the above example in PHP 7:

Parse error: syntax error, unexpected 'new' (T_NEW) in /tmp/test.phpon line 3

没有替代。您正在使用已弃用的行为，现在它不再是有效的 PHP。只是不要通过引用分配。