What are best practices for optimizing MySQL queries in PHP when searching across multiple tables?

When searching across multiple tables in MySQL queries in PHP, it is important to optimize the queries to improve performance. One way to do this is by using proper indexing on the columns being searched. Additionally, utilizing JOIN statements instead of multiple separate queries can help reduce the number of database calls and improve efficiency. 

<?php
// Example of optimizing MySQL query in PHP when searching across multiple tables
$query = "SELECT * FROM table1 
          JOIN table2 ON table1.id = table2.table1_id 
          WHERE table1.column = 'value' AND table2.column = 'value'";
$result = mysqli_query($connection, $query);

// Process the result set
while ($row = mysqli_fetch_assoc($result)) {
    // Handle each row
}

// Remember to close the connection
mysqli_close($connection);
?>

Keywords

MySQL PHP optimization queries multiple tables

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