How Do I Retrieve and Use a Row Count from a MySQL Query in PHP?

How to Use the Result from COUNT(*) in PHP:

Instead of retrieving all rows or a single column, you may want to optimize your query by simply obtaining the count. By using "SELECT COUNT(*)" syntax, you can retrieve the count of rows in a table. However, the next question arises: how do you utilize this count value in PHP?

The recommended approach is to avoid using reserved words like "count" as column names in SQL. Instead, consider using a different name, such as "cnt." To retrieve the count value, use the following code:

$count = $mysqli->query("select count(*) as cnt from cars")->fetch_object()->cnt;

This code executes the query, retrieves the first row as an object, and assigns the value of the "cnt" property to the $count variable. You can then use the $count variable to determine the number of rows in the "cars" table. This approach is efficient and avoids the need to retrieve all rows or a specific column.

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