What are the potential issues when combining code from a database and file in PHP?

When combining code from a database and a file in PHP, potential issues can arise due to differences in data formats or encoding. To solve this, it's important to ensure that the data retrieved from the database is properly formatted before combining it with data from a file. Additionally, handling errors and exceptions during the data retrieval process can help prevent any unexpected issues. 

// Retrieve data from the database
$dbData = fetchDataFromDatabase();

// Retrieve data from a file
$fileData = file_get_contents('data.txt');

// Ensure proper formatting of database data
$dbData = json_encode($dbData);

// Combine the data
$combinedData = $dbData . $fileData;

// Use the combined data as needed
echo $combinedData;

Keywords

SQL injection file inclusion vulnerability file_get_contents fopen include_once

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