What are the potential pitfalls of using multiple table joins in PHP when querying a database?

Potential pitfalls of using multiple table joins in PHP when querying a database include increased complexity, decreased performance, and potential for errors due to the complexity of the query. To solve this issue, it is recommended to break down the query into smaller, more manageable parts, use indexes on the columns being joined, and optimize the query for better performance.

// Example of breaking down a query with multiple table joins into smaller parts
$query1 = "SELECT * FROM table1 JOIN table2 ON table1.id = table2.table1_id";
$result1 = mysqli_query($connection, $query1);

$query2 = "SELECT * FROM table3 JOIN table4 ON table3.id = table4.table3_id";
$result2 = mysqli_query($connection, $query2);