How to read only 5 last line of the text file in PHP?

Question

I have a file named file.txt which is update by adding lines to it.

I am reading it by this code:

$fp = fopen(\"file.txt\", \"r\");
$da         


        

Answer 1

Here is my solution:

/**
 *
 * Reads N lines from a file
 *
 * @param type $file       path
 * @param type $maxLines   Count of lines to read
 * @param type $reverse    set to true if result should be reversed.
 * @return string
 */
public function readLinesFromFile($file, $maxLines, $reverse=false)
{
    $lines = file($file);

    if ($reverse) {
        $lines = array_reverse($lines);
    }

    $tmpArr = array();

    if ($maxLines > count($lines))
        exit("\$maxLines ist größer als die Anzahl der Zeilen in der Datei.");

    for ($i=0; $i < $maxLines; $i++) {
        array_push($tmpArr, $lines[$i]);
    }

    if ($reverse) {
        $tmpArr = array_reverse($tmpArr);
    }

    $out = "";
    for ($i=0; $i < $maxLines; $i++) {
        $out .= $tmpArr[$i] . "
";
    }

    return $out;
}