Search results for: "mysqli_num_rows()"

What are the best practices for handling empty result sets in PHP queries to prevent errors?

When querying a database in PHP, it is important to handle empty result sets to prevent errors. One way to do this is by checking if the result set is...

How can the PHP code be optimized to efficiently count the number of entries in column 3 that do not have corresponding values in columns 4 and 5?

To efficiently count the number of entries in column 3 that do not have corresponding values in columns 4 and 5, we can use a SQL query to filter out...

What is the correct syntax for retrieving data from a MySQL result in PHP to avoid warnings and errors?

When retrieving data from a MySQL result in PHP, it is important to handle potential warnings and errors that may occur. To avoid these issues, you sh...

What is the difference between a failed query and an empty result set in PHP?

A failed query in PHP occurs when there is an error in the SQL syntax or connection to the database. This means that the query was not executed succes...