How do I determine if an array is empty in PHP?

Question

I want to check that an array has no values or that the values in the array are empty. Can someone explain how to do this?

Silvern

What do you mean by "array values is empty"? Useful functions/constructs: is_array, count, empty, isset. It all depends on what exactly you're trying to test. – Huarache

here is an array with no values only keys .i used count and empty but those functions are saying array has values .Array ( [delegate_title] => [delegate_firstname] => [delegate_lastname] => [delegate_jobtitle] => [delegate_email] => [delegate_phone] => [is_bringing_own_laptop] => ) – Silvern

Answer 1

Someday I've learned very smart solution here on SO

if(!array_filter($array)) {
  //array contains only empty values
}

or even smarter one (if applicable):

if(!array_filter($array,'trim')) {
  //array contains only empty values
}

Hindsight

@Vinay it seems empty() is better anyway – Hindsight

but empty gives me that array has values – Silvern

@Vinay what PHP version you're using? – Hindsight

in local machine php 5 and in server its php 4 – Silvern

array_filter is really handy! never used it before today, but it solves my problem! thank you! – Rodd

Answer 2

You want the empty() function, here's the documentation of the empty function http://php.net/manual/en/function.empty.php

Fluorene