使用方括号并在php中分配变量

Question

Hello guys I have seen a source like

$something = $sql['value']

I have searched a lot about it and I found that it's from arrays. But I didnt understand the exact meaning.

For ex ..

$people = [


 'Susan' => [
    'Age' => 24,
'Phone' => '555-123-4567'
],

  'Jack' => [


  'Age' => 27,


  'Phone' => '555-9876-5432'

  ]
];

echo $people['Jack']['Age']; // 27

My question is that can we write a code like this ..

if(!empty($people)

    $something = $people['a value']

I Just need to know how can we declare a variable and give a value in square brackets ..ny help would be appreciated. Thanks. :)

Answer 1

If you are using $something = $people['a value'] means you are assigning a value of $people array having an index of a value

So you don't have that and so it will throw you undefined index error.

What you are using is a nested associative array and you have to output using something like

echo $people['Jack']['Age'];

---

As you wanted a brief example, say you have an array like

$people = array('name'=>'Jack');

Now, when you want to store the name in a variable, you use

$store_name = $people['name'];

echo $store_name; //echoes Jack