Tail log php

log.php

<?php
/**
 * Error Log Tail
 * @author Gustavo Novaro
 * @version 1.0.3
 * Set in php.ini error_log=
 */
// Linux Path
$log_path = '/var/log/php_error.log';
// Windows path
//$log_path = 'C:\Windows\Temp\php_error.log';

function tail($filename, $lines = 40, $buffer = 4096)
{
    // Open the file
    if(!file_exists($filename))
        die('No such file: '.$filename);

    $f = fopen($filename, "rb");

    // Jump to last character
    fseek($f, -1, SEEK_END);

    // Read it and adjust line number if necessary
    // (Otherwise the result would be wrong if file doesn't end with a blank line)
    if(fread($f, 1) != "\n") $lines -= 1;

    // Start reading
    $output = '';
    $chunk = '';

    // While we would like more
    while(ftell($f) > 0 && $lines >= 0)
    {
        // Figure out how far back we should jump
        $seek = min(ftell($f), $buffer);

        // Do the jump (backwards, relative to where we are)
        fseek($f, -$seek, SEEK_CUR);

        // Read a chunk and prepend it to our output
        $output = ($chunk = fread($f, $seek)).$output;

        // Jump back to where we started reading
        fseek($f, -mb_strlen($chunk, '8bit'), SEEK_CUR);

        // Decrease our line counter
        $lines -= substr_count($chunk, "\n");
    }

    // While we have too many lines
    // (Because of buffer size we might have read too many)
    while($lines++ < 0)
    {
        // Find first newline and remove all text before that
        $output = substr($output, strpos($output, "\n") + 1);
    }

    // Close file and return
    fclose($f);
    return $output;
}

$output = tail($log_path);
$output = str_replace(' America/Argentina/Buenos_Aires','',$output);
echo "<pre>";
echo $output;