How can PHP scripts be optimized to prevent issues with file handling and data insertion?

PHP scripts can be optimized to prevent issues with file handling and data insertion by properly closing file handles after use and sanitizing user input to prevent SQL injection attacks. Additionally, using prepared statements for database queries can help prevent data insertion errors. Example PHP code snippet for closing file handles and using prepared statements: 

// Closing file handle after use
$file = fopen("example.txt", "r");
// Do something with the file
fclose($file);

// Using prepared statements for database queries
$stmt = $pdo->prepare("INSERT INTO table_name (column1, column2) VALUES (:value1, :value2)");
$stmt->bindParam(':value1', $value1);
$stmt->bindParam(':value2', $value2);
$stmt->execute();

Keywords

PHP optimization file handling data insertion error prevention

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