What are common issues when querying MySQL with dates in PHP?

Common issues when querying MySQL with dates in PHP include mismatched date formats between PHP and MySQL, time zone differences, and improper handling of date strings. To solve these issues, it is recommended to use the `DATE_FORMAT()` function in MySQL to format dates consistently, set the correct time zone in both PHP and MySQL, and use prepared statements to safely handle date strings.

// Set the time zone in PHP
date_default_timezone_set('Your/Timezone');

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

// Prepare and execute a query with dates
$stmt = $mysqli->prepare("SELECT * FROM table WHERE DATE(date_column) = ?");
$date = date('Y-m-d', strtotime($your_date_string));
$stmt->bind_param("s", $date);
$stmt->execute();

// Fetch results
$result = $stmt->get_result();
while ($row = $result->fetch_assoc()) {
    // Process results
}

// Close statement and connection
$stmt->close();
$mysqli->close();