PHP checking $_POST

Question

I have some form fields that when a form is submitted creates an array within the $_POST, I needing to check the this array has atleast 4 keys, how can I check that? I have no idea

Answer 1

Use array_keys and count:

echo count(array_keys($_POST));

Or simply:

echo count($_POST);

because keys are same in number as items.

Answer 2

The count() function returns the length of an array.

Answer 3

If your form look something like this:

<input type='text' name='data[]' value='' />

Then, all you have to do is:

echo count($_POST['data']);

Answer 4

try:

<?php 
if(count($_POST) >= 4):
//Do your stuff
else:
//Do your error stuff
endif;

If you want to check an array within $_POST as apose to $_POST itself use count($_POST['name_of_key_to_array_you_want_to_count'])