- 1). Open a text editor, such as Notepad, and create a new file. Write a line of code that defines an array using PHP's "array" function. The syntax for the function is "array(value1, value2, ...);." Here is an example:
$myArray = array('Jack', '', null, 17.6); - 2). Write a line of code that executes PHP's "array_filter" function with the array from Step 1 as the parameter and saves the result into a new variable. Here is an example:
$filteredArray = array_filter($myArray); - 3). Write a line of code that subtracts the number of elements in the array from Step 1, which is found using PHP's "count" function, from the number of elements in the array from Step 2 and saves it into a new variable. The new variable now contains the number of empty elements in the original array.
$emptyCount = count($myArray)-count($filteredArray);
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