相关疑难解决方法(0)

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This is a collection of questions that come up every now and then about syntax in PHP. This is also a Community Wiki, so everyone is invited to participate in maintaining this list.

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It used to be hard to find questions about operators and other syntax tokens.¹
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如果我理解正确,您可以使用以下方法为数组添加值:

$myArray[] = 123;

要么

array_push($myArray, 123);

一个更清洁/更快,然后另一个？

我遇到了一些看起来像这样的示例代码:

$form['#submit'][] = 'annotate_admin_settings_submit';

为什么在['#submit']之后有一个空格,里面什么都没有？这意味着什么？谁能举个例子？通常(根据我的理解,可能是错误的)是数组有键,在这种情况下,$ form数组键'#submit'等于'annotate_admin_settings_submit'但是第二组括号的处理是什么.我见过一个数组看起来像的例子:

$form['actions']['#type'] = 'actions';

我知道这是关于php的一个非常基本的问题,但我在学习Drupal时遇到了这个问题,所以希望Drupal社区中的某个人可以澄清这个我正在痴迷的问题.