(not well) stream_get_line_reverses

stream_get_line_reverses.php

<?php
$tmp = tmpfile();

$fp = fopen('stream.php', 'r');
//$fp = fopen('streamCRLF.php', 'r');
//$fp = fopen('streamCR.php', 'r');

function fpulls($fp, &$i) {

    $line = '';

    while (true) {
        fseek($fp, $i, SEEK_END);

        if (feof($fp)) {
            $i = false;
            break;
        }
        --$i;

        $char = fgetc($fp);
        if ($char === false) {
            break;
        }

        // LF?
        if (chr(10) === $char) {
            fseek($fp , $i - 1 , SEEK_END);
            if (chr(12) === fgetc($fp)) {
                --$i;
            }

            break;
        }
        if (chr(12) === $char ) {
            break;
        }

        $line = $char . $line;
    }

    return $line;
}

$i = 0;

do {
    $line = fpulls($fp, $i);
    fwrite($tmp, ($i !== false) ? $line . "\n" : $line);
    var_dump($line);
} while ($i !== false);

rewind($tmp);
var_dump(stream_get_contents($tmp));