Why Is My PHP File Writing Code Creating Line Feed Issues?

Troubleshooting Line Feed Issue While Writing to File in PHP

Encountering problems with line feed while writing to a file in PHP? The issue arises when using 'n' as the line feed when it should be "n" instead.

The code snippet below demonstrates the problem:

$i = 0;
$file = fopen('ids.txt', 'w');
foreach ($gemList as $gem)
{
    fwrite($file, $gem->getAttribute('id') . '\n');
    $gemIDs[$i] = $gem->getAttribute('id');
    $i++;
}
fclose($file);

In this code, the line feed 'n' is enclosed within single quotes, which prevents the escape sequence from being recognized. To resolve this, simply replace 'n' with "n" to correctly output the line feed.

$i = 0;
$file = fopen('ids.txt', 'w');
foreach ($gemList as $gem)
{
    fwrite($file, $gem->getAttribute('id') . "\n");
    $gemIDs[$i] = $gem->getAttribute('id');
    $i++;
}
fclose($file);

Regarding the choice of line ending, different operating systems have distinct conventions. Windows utilizes "rn," while Unix-based systems employ "n." For consistency, it's advisable to select one convention, such as "n," and open your file in binary mode (fopen should specify "wb" instead of "w").

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