在PHP中使用没有初始化的数组[重复]

Question

This question already has an answer here:

• Should an array be declared before using it? [closed] 7 answers

In most languages, I have to initialize an associative array before I can use it:

data = {}
data["foo"] = "bar"

But in PHP I can just do

data["foo"] = "bar"

Are there any repercussions to doing this? Is this "the right way" to write PHP?

</div>

Answer 1

Basically it's the same, and no you won't find any problem or repercussion.

But if you like you can do this:

$a = array();

You can read more in the PHP page