How can you ensure that all variables in an array are considered when checking for emptiness in PHP?

When checking for emptiness in an array in PHP, it's important to ensure that all variables are considered. One way to do this is by using the `array_filter()` function along with `empty()` to check each element in the array. This will ensure that all variables are checked for emptiness before determining if the array is empty. 

// Example code to check for emptiness in an array considering all variables
$array = [0, '', null, 'hello', false];

$non_empty_elements = array_filter($array, function($value) {
    return !empty($value);
});

if (empty($non_empty_elements)) {
    echo "Array is empty";
} else {
    echo "Array is not empty";
}

Keywords

array variables emptiness PHP checking

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