How can PHP developers optimize their SQL queries to efficiently update and clean data fields containing special characters like \n and \r?

When updating or cleaning data fields containing special characters like \n and \r in SQL queries, PHP developers can use the `mysqli_real_escape_string` function to properly escape these characters before executing the query. This function will ensure that special characters are properly handled and prevent any potential SQL injection attacks. 

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

// Input data containing special characters
$inputData = "Some data with special characters: \n and \r";

// Escape special characters before updating database
$cleanData = $mysqli->real_escape_string($inputData);

// Update database with cleaned data
$query = "UPDATE table SET column = '$cleanData' WHERE id = 1";
$mysqli->query($query);

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

Keywords

PHP SQL queries special characters data fields optimization

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