How to check if array with keys and values is empty

Question

I have an array of arrays that get populated when a form is submitted.

$groceries = array(
    "Veggies" => array( 
        "Cabbage, ear(s)" => $_POST['cabbageQTY'],
        "Carrots, bag(s)" => $_POST['carrotQTY'],
        "Tomatoes, vine(s)" => $_POST['tomatoeQTY']
    ),
    "Meats" => array( 
        "Ground Beef, lb(s)" => $_POST['groundBeefQTY'],
        "Steak, lb(s)" => $_POST['steakQTY'],
        "Pork, lb(s)" => $_POST['porkQTY']
    ),
    "Desserts" => array(
        "Ice Cream, gallon(s)" => $_POST['iceCreamQTY'],
        "Jello, box(es)" => $_POST['jelloQTY'],
        "Pie, box(es)" => $_POST['pieQTY']
    )
);

If all the fields come up null, is there a way to check to see if the values will be empty?

I read somewhere else you can try and do this.

!array_filter($groceries)

But I think this would work for a 1 dimentional array. Anyway to do this in a 2d array? If you guys could tell me how to do this, it would be awesome

Thank you in advance.

perhaps look into count() as well to count the content in the array. Example if( count($groceries) > 0 ) {echo "My groceries array has something!";} — UserProg
– UserProg, Commented May 10, 2014 at 2:21

Funk Forty Niner · Accepted Answer · 2014-05-10 00:48:23Z

1

first you can use <input type="text" name="cabbageQTY" required> . Then user cannot leave them blank. After if its not work for you you can try to lookup all posts at the same time if they are null or not.

foreach ($_POST as $key => $value)
  if  $value==(null) echo $key.' value is null';

edited May 10, 2014 at 0:48

Funk Forty Niner

74.2k14 gold badges71 silver badges146 bronze badges

answered May 10, 2014 at 0:47

Suleyman DOGAN

18310 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Vigilante · Accepted Answer · 2014-05-10 02:28:10Z

0

I'm not sure the question is explained fully. If this is only being populated from a form POST, then there is no NULL, they should exist as empty strings. If you want to save an empty string text like "Empty", then maybe do something like this:

$blank = "Empty";
...
"Ground Beef, lb(s)" => $_POST['groundBeefQTY'] == "" ? $blank : $_POST['groundBeefQTY'],
...

answered May 10, 2014 at 2:28

Vigilante

1311 gold badge1 silver badge7 bronze badges

Collectives™ on Stack Overflow

How to check if array with keys and values is empty

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related