PHP致命错误:无法使用$ this作为参数 [英] PHP Fatal error: Cannot use $this as parameter

问题描述

我有以下PHP方法，该方法是代码库中运行良好的一部分:

I've the following PHP method which is part of the codebase which was working fine:

<?php
class HooksTest extends DrupalTestCase {
  public function testPageAlterIsLoggedIn() {
    $this->drupal->shouldReceive('userIsLoggedIn')
      ->once()
      ->andReturn(TRUE);
    $this->drupal->shouldReceive('drupalPageIsCacheable')
      ->once()
      ->andReturnUsing(function ($this) {
        return $this;
      });
    $page = [];
    $cacheable = $this->object->pageAlter($page);
    $this->assertFalse($cacheable);
  }
}

该代码之前已经通过了所有CI测试(使用phpunit).

The code was passing all the CI tests before (using phpunit).

但是现在当我通过php HooksTest.php调用文件时，出现以下错误:

However now when I'm invoking the file via php HooksTest.php, I've got the following error:

PHP致命错误:无法在第11行的HooksTest.php中使用 $this 作为参数

PHP Fatal error: Cannot use $this as parameter in HooksTest.php on line 11

致命错误:无法在第11行的HooksTest.php中使用 $this 作为参数

Fatal error: Cannot use $this as parameter in HooksTest.php on line 11

我已经用PHP 7.1、7.2和相同的问题进行了测试.我相信它可以在PHP 5.6中使用.

I've tested with PHP 7.1, 7.2 and same issue. I believe it was working in PHP 5.6.

如何将上述代码转换为具有相同含义?

How can I convert above code to have the same meaning?

从功能参数中删除$this是否足够?

Does removing $this from the function parameter should be enough?

推荐答案

只需跳过$this参数，即可更改

Just skip $this argument, change

function ($this) {
    return $this;
}

到

function () {
    return $this;
}

---

查看示例#5在$this自动绑定>匿名函数页面:

---

Look at Example #5 Automatic binding of $this on Anonymous functions page:

<?php
class Test
{
    public function testing()
    {
        return function() {
            var_dump($this);
        };
    }
}
$object = new Test;
$function = $object->testing();
$function();
?>

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