test object is null in php

Question

I want to test if an object is null or not, I have the follwing code

$listcontact = array();
$contact=$ms->search('email','test@live.Fr');
var_dump(($contact));

and the result if $listcontact not null is give as follow

object(stdClass)[6]
public 'item' => string 'dfdfsd' (length=7)

in the case it's null , I get the following result

object(stdClass)[6]

How I can test the variable $listcontact exists or not? I've tried with is_null and (empty() but not work

You can use `count` method of php [Documentation Link](http://php.net/manual/en/function.count.php) — Aatman, Jan 28 '16 at 12:01
How is *$listcontact* involved in setting *$contact*? Your code does not show any connection. — trincot, Jan 28 '16 at 12:04
Possible duplicate of [How to tell if a PHP array is empty?](http://stackoverflow.com/questions/2216052/how-to-tell-if-a-php-array-is-empty) — trincot, Jan 28 '16 at 12:15

Praveen Kumar Purushothaman · Answer 1 · 2016-01-29T12:32:27.813

5

You can use a built-in function is_null() to check null values. So, use:

if (is_null($listcontact))
  // Yes, it is null.
else
  // Do something.

edited Jan 29 '16 at 12:32

answered Jan 28 '16 at 11:57

score 4 · Accepted Answer · edited May 23 '17 at 12:15

4

Use the function is_null() as follows :

is_null($listcontact);

The Return Value is :

Returns TRUE if var is null, FALSE otherwise.

EDIT

Also you can use this :

  if ( !$YOUR_OBJECT->count() ){
        //null
  }

For more information see those answers

$EmptyArray= array_filter($listcontact);

if (!empty($EmptyArray)){

}
else{
    //nothing there
}

edited May 23 '17 at 12:15

Community

answered Jan 28 '16 at 11:58

I test it but not worked, beceause I use webservice in php and the called function return a String[] variable – Majdi Taleb Jan 28 '16 at 12:14
Try to check if your count(YOUROBJECT) == 0 it's empty – Skizo-ozᴉʞS ツ Jan 28 '16 at 12:22
Did it work @MajdiTaleb? If it did feel free to mark this quesiton as a correct (The green check) :P – Skizo-ozᴉʞS ツ Jan 28 '16 at 18:54

score 2 · Answer 3 · answered Jan 28 '16 at 11:59

If you get object stdclass with var_dump, it must not be null.

The fastest way to check if a variable is null is to use $listcontact === null.

in the case it's null , I get the following result

object(stdClass)[6]

This means that the search() function didn't return null.

score 0 · Answer 4 · answered Jan 28 '16 at 12:02

0

I found a correct answer for this

 $tmp = (array) $listcontact;
 var_dump(empty($tmp));
if(empty($tmp)){
echo "empty"
}

answered Jan 28 '16 at 12:02

Majdi Taleb

You can also use `is_null()`. Does `is_null` work for you? – Praveen Kumar Purushothaman Jan 28 '16 at 12:03
I test it but not worked, beceause I use webservice in php and the called function return a String[] variable – Majdi Taleb Jan 28 '16 at 12:14