Search results for: "non-aggregated columns"

What changes were made in PHP 7.2 that led to the warning being thrown when count() is used on non-array or non-Countable objects?

In PHP 7.2, changes were made to the count() function to throw a warning when used on non-array or non-Countable objects to prevent potential errors....

How can one handle non-existent user errors in a PHP MySQL login system to prevent non-object error messages?

When handling non-existent user errors in a PHP MySQL login system, it is important to check if the query returned any results before trying to access...

How can including non-PHP code within PHP scripts result in unexpected errors?

When including non-PHP code within PHP scripts, it can lead to unexpected errors because the PHP interpreter will try to parse and execute the non-PHP...

What are some common pitfalls when using MySQL for data aggregation in PHP applications?

One common pitfall when using MySQL for data aggregation in PHP applications is not utilizing proper indexing on the columns being aggregated. This ca...

How can beginners differentiate between static and non-static methods in PHP?

Beginners can differentiate between static and non-static methods in PHP by understanding that static methods are called on the class itself, while no...