Search results for: "null values"

How can PHP handle database entries with NULL values?

When handling database entries with NULL values in PHP, it's important to check for NULL values before using them in your code to avoid potential erro...

How does json_encode handle null values in PHP arrays?

When using json_encode in PHP, null values in arrays are automatically converted to the JSON null value. This means that if a key in an array has a nu...

What are the differences between using != NULL and is_null() to check for null values in PHP variables?

When checking for null values in PHP variables, using != NULL compares the value of the variable against NULL, while is_null() specifically checks if...

What are potential pitfalls when checking for NULL values in PHP arrays?

When checking for NULL values in PHP arrays, a potential pitfall is mistaking an empty string ('') for NULL. To accurately check for NULL values, you...

In the context of PHP, what are the differences between using === null and is_null() to check for NULL values?

When checking for NULL values in PHP, using === null is a strict comparison that checks both value and type, while is_null() is a built-in function th...