How can PHP arrays be checked for null values?

To check PHP arrays for null values, you can iterate through the array using a loop and check each value for null using the `is_null()` function. If a null value is found, you can take appropriate action such as setting a default value or removing the null value from the array. 

$array = [1, null, 3, null, 5];

foreach ($array as $key => $value) {
    if (is_null($value)) {
        // Handle null value (e.g. set a default value or remove it)
        $array[$key] = "Default";
    }
}

print_r($array);

Keywords

PHP arrays null values checking validation

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