What are some recommended debugging techniques for identifying and resolving issues with saving multiple entries in a MySQL database using PHP?

One common issue when saving multiple entries in a MySQL database using PHP is not properly iterating through the data to insert each entry individually. To solve this, you can use a loop to iterate through the data array and execute the INSERT query for each entry. 

// Assume $data is an array of entries to be saved in the database

// Connect to MySQL database
$mysqli = new mysqli("localhost", "username", "password", "database");

// Check connection
if ($mysqli->connect_error) {
    die("Connection failed: " . $mysqli->connect_error);
}

// Iterate through the data array and insert each entry into the database
foreach ($data as $entry) {
    $sql = "INSERT INTO table_name (column1, column2, column3) VALUES ('" . $entry['value1'] . "', '" . $entry['value2'] . "', '" . $entry['value3'] . "')";
    
    if ($mysqli->query($sql) === TRUE) {
        echo "New record created successfully";
    } else {
        echo "Error: " . $sql . "<br>" . $mysqli->error;
    }
}

// Close database connection
$mysqli->close();

Keywords

PHP MySQL debugging error handling data validation

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