How can the PHP script be modified to ensure that the filename appears before each line of data in the local file being generated?

To ensure that the filename appears before each line of data in the local file being generated, you can modify the PHP script to write the filename followed by a delimiter (such as a comma or pipe symbol) before writing each line of data. This way, when the file is opened, the filename will be easily identifiable for each line of data. 

<?php
$filename = 'example.txt';
$file = fopen($filename, 'w');

// Write filename before each line of data
$data = "Filename: $filename\n"; // Assuming the filename should be displayed as "Filename: example.txt"
fwrite($file, $data);

// Write data lines
$dataLines = array("Line 1", "Line 2", "Line 3");
foreach ($dataLines as $line) {
    $data = "$filename: $line\n"; // Assuming the format should be "example.txt: Line 1"
    fwrite($file, $data);
}

fclose($file);
?>

Keywords

PHP file handling fopen fwrite file_put_contents

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