Is it possible to include a variable in a SQL query in PHP?

Yes, it is possible to include a variable in a SQL query in PHP by using prepared statements. Prepared statements help prevent SQL injection attacks and also allow for the inclusion of variables in SQL queries. This involves using placeholders in the SQL query and binding the variables to these placeholders before executing the query. 

// Example of using a variable in a SQL query with prepared statements in PHP

// Assuming $conn is the database connection object

// Define the variable
$user_id = 123;

// Prepare the SQL query with a placeholder
$stmt = $conn->prepare("SELECT * FROM users WHERE id = ?");

// Bind the variable to the placeholder
$stmt->bind_param("i", $user_id);

// Execute the query
$stmt->execute();

// Get the results
$result = $stmt->get_result();

// Fetch the data
while ($row = $result->fetch_assoc()) {
    // Process the data
}

// Close the statement
$stmt->close();

Keywords

PHP SQL query variable dynamic injection

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