如何使用关联数组声明，插入和迭代php关联数组作为值？

Question

I need to work with a hashtable which values can store variables like:

• $numberOfItems
• $ItemsNames

If I ain't wrong, that would mean another hash like array as value.

What should be the right syntax for inserting and iterating over it?

Is anything like:

$hash['anyKey']=>$numberOfItems=15;
$hash['anyKey']=>$ItemsNames=['f','fw'];

valid?

Answer 1

To create php array, which can be a hash table, you can do:

$arr['element'] = $item;
$arr['element'][] = $item;
$arr['element'][]['element'] = $item;

Other way:

$arr = array('element' => array('element' => array(1)));

To iterate over it use foreach loop:

foreach ($items as $item) {
}

It's also possible to create nested loops.

About your case:

$hash['anyKey']=>$numberOfItems=15;
$hash['anyKey']=>$ItemsNames=['f','fw'];

I would do:

$hash['anyKey']['numberOfItems'] = 15;
$hash['anyKey']['ItemsNames'] = array('f','fw');

Answer 2

if there's no chance to have collusion in item name, you can use the name in key

$hash[$ItemsName] = $numberOfItems;

in the other case, use an integer for example as a key, then the different "attributes" you want as keys for the 2nd array

$hash[$integer]["count"] = $numberOfItems;
$hash[$integer]["name"] = $name;$

Then, for iterating (1st case):

 foreach ($hash as $name => $number) {
       echo $number;
       echo $name;
   }

or, 2nd case

foreach ($hash as $item) {
       echo $item["name"];
       echo $item["count"];
    }