是否有可能引用在PHP中匿名数组的特定元素？ [英] Is it possible to reference a specific element of an anonymous array in PHP?

问题描述

这可能是一个简单的问题，我恐怕答案可能是不，但是......

This is probably a simple question, and I'm afraid the answer might be "no", but...

下面是一个简单的一块code的：

Here's a simple piece of code:

function func1() {
  $bt = debug_backtrace();
  print "Previous function was " . $bt[1]['function'] . "\n";
}

现在......可以这样没有临时变量做了什么？在另一种语言，我可能希望能够说：

Now... Can this be done without the temporary variable? In another language, I might expect to be able to say:

function func1() {
  print "Previous function was " . (debug_backtrace())[1]['function'] . "\n";
}

唉，在PHP中，这将导致一个错误：

Alas, in PHP, this results in an error:

PHP Parse error:  syntax error, unexpected '[' ...

如果它不能做的，它不能做的，我会用一个临时变量，但我宁愿不要。

If it can't be done, it can't be done, and I'll use a temporary variable, but I'd rather not.

推荐答案

没有，直接间接引用是不幸的是没有在PHP的当前版本的支持，但显然将进来PHP 5.4。

No, direct dereferencing is unfortunately not supported in current versions of PHP, but will apparently come in PHP 5.4.

也可参阅＆QUOT 术语问题;非关联化和QUOT;？

Also see Terminology question on "dereferencing"?.

这篇关于是否有可能引用在PHP中匿名数组的特定元素？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！