Why Doesn't My PHP `while (!feof())` Loop Read the Entire File?

PHP While Loop (!feof()) Not Outputting Complete Data

When attempting to read and display the entire contents of a .txt file using a while loop (!feof()), users may encounter an issue where the loop does not complete the output, potentially skipping or truncating the end of the file. This issue arises when the end-of-file (EOF) test occurs before the final read operation.

To resolve this, it is recommended to modify the loop structure to perform the EOF check as part of the reading process. Here's an improved code snippet:

$handle = fopen("item_sets.txt", "r");

if ($handle) {
    while (($buffer = fgets($handle, 4096)) !== false) {
        $trimmed = trim($buffer);
        echo $trimmed;
    }
} else {
    echo 'Unexpected error opening file';
}
fclose($handle);

Additionally, it is advisable to handle errors explicitly rather than suppressing them using @. The improved code snippet:

$line_count = 0;

$handle = fopen("item_sets.txt", "r");

if ($handle) {
    while (($buffer = fgets($handle, 4096)) !== false) {
        $trimmed = trim($buffer);
        echo $trimmed;
        $line_count++;
    }
} else {
    echo 'Unexpected error opening file';
}
fclose($handle);

echo PHP_EOL.PHP_EOL.PHP_EOL.'Lines read from file = ' . $line_count;

When testing this code with the provided data file, it produces the correct output, including the last entry in the file:

[aa_fade_revolver]weapon_revolver"          "1"

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