How can PHP developers ensure that their code accurately reflects the data in external files?

PHP developers can ensure that their code accurately reflects the data in external files by regularly updating the data in the external files and implementing proper error handling to catch any discrepancies between the data in the files and the code. They can also use functions like file_get_contents() and file_put_contents() to read and write data to external files, ensuring that the code is always in sync with the data. 

// Read data from external file
$data = file_get_contents('external_data.txt');

// Update data in external file
file_put_contents('external_data.txt', $new_data);

// Error handling
if ($data === false) {
    echo "Error reading data from external file";
}

Keywords

file_get_contents json_decode fopen fwrite error handling

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