php php中有字典吗？
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Are there dictionaries in php?
提问by bzupnick
For example:
例如：
$names = {[bob:27, billy:43, sam:76]};
and then be able to reference it like this:
然后可以像这样引用它：
$names[bob]
回答by Jacob
http://php.net/manual/en/language.types.array.php
http://php.net/manual/en/language.types.array.php
<?php
$array = array(
"foo" => "bar",
"bar" => "foo",
);
// as of PHP 5.4
$array = [
"foo" => "bar",
"bar" => "foo",
];
?>
Standard arrays can be used that way.
可以以这种方式使用标准数组。
回答by Brént Russ?ll
No, there are no dictionaries in php. The closest thing you have is an array. However, an array is different than a dictionary in that arrays have both an index and a key. Dictionaries only have keys and no index. What do I mean by that?
不，php 中没有字典。你拥有的最接近的东西是一个数组。但是，数组与字典的不同之处在于数组同时具有索引和键。字典只有键，没有索引。我是什么意思？
$array = array(
"foo" => "bar",
"bar" => "foo"
);
// as of PHP 5.4
$array = [
"foo" => "bar",
"bar" => "foo",
];
The following line is allowed with the above array but would give an error if it was a dictionary.
上面的数组允许使用以下行，但如果它是字典，则会出现错误。
print $array[0]
Python has both arrays and dictionaries. Maybe you come from a python background
Python 有数组和字典。也许你来自 python 背景
