How to determine if an array has any elements or not?

You can use the count() or sizeof() PHP functions:

if (sizeof($result) > 0) {
    echo "array size is greater than zero";
}
else {
    echo "array size is zero";
}

Or you can use:

if (count($result) > 0) {
    echo "array size is greater than zero";
}
else {
    echo "array size is zero";
}

count — Count all elements in an array, or something in an object

int count ( mixed $array_or_countable [, int $mode = COUNT_NORMAL ] )

Counts all elements in an array, or something in an object.

Example:

<?php
    $a[0] = 1;
    $a[1] = 3;
    $a[2] = 5;
    $result = count($a);
    // $result == 3

In your case, it is like:

if (count($array) > 0)
{
    // Execute some block of code here
}

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