How to check for empty values within a array using PHP

If you have an array called $array with the below values

Array
(
    [0] => 1299016800
    [1] => 
    [2] => 
)

As we can see in the above example we have 2 empty values within the array, now how do we determine this using PHP

First we get the size of the array

$mainSize = sizeof($array);

Now we get the size of the array without the empty values

$emptySize =sizeof(array_filter($array));

Now we compare the 2 different sizes, if they are equal to each other, then it means that there aren’t empty values within the array, else there are empty values within the array

$mainSize = sizeof($array);
$emptySize =sizeof(array_filter($array));
 
if($mainSize == $emptySize){
              echo 'Array not empty';
}else{
              echo 'Array is empty';
}

sizeof in PHP

PHP sizeof() function is used to count the elements from an array, or the properties of an object.
It is an alias to count() function.

Syntax:

sizeof(array,mode)

Parameters Description: 

array : Required. Determines the array or object count.
mode : Optional. Determines the mode of the function. Conceivable values:

• 0 -Default. Does not detect multidimensional arrays (arrays within arrays)
• 1 -Detects multidimensional arrays

Note : This parameter was added in PHP 4.2
Note : PHP sizeof() function may return 0 if a variable isn't set, but it may also return 0 if a variable contains an empty array.
           The isset() function can be used to test if a variable is set.

Example:

<?php
$daysarr = array( "Sunday","Monday","Tuesday","Wednesday","Thursday" );
$result= sizeof($daysarr);
echo $result;
?>

Output will be:

5