How to get array value by key

Question

I am having an strange issue while transversing array, created by html input. Here is my html:

<input type="hidden" name="new_date['rule'][]" value="hfgfgfgfg">
<input type="date" name="new_date['date'][]" />

if I submit form then I get array like this:

$var=$_POST['new_date'];
echo"<pre>";
print_r($var);
echo"</pre>";
//output
Array
(
    ['rule'] => Array
        (
            [0] => rule_5a6c50ff02fff
        )

    ['date'] => Array
        (
            [0] => 2018-05-24
        )

)

if I am trying the array with key rule then I am getting nothing or empty.

print_r($var['rule']);
//output
.....empty......

Please help. TIA

Answer 1

In HTML you have used new_date['rule'][] which have key as 'rule' so while retriving through POST you need to use same key i.e. with single quote

USE below:

var_dump($var["'rule'"])

To use : $var['rule'] you may need to use new_date[rule][] in your html