Generate line numbers to Sublime VintageLines plugin

generate.php

<?php
// Set the content-type
header('Content-Type: image/png');

// Replace with your own font and font-size
$font = 'UbuntuMono-R.ttf';
$fontsize = 11;

// Create the numbers directory if it doesn't exist
if(!is_dir(dirname(__FILE__) . '/numbers/')) {
    mkdir(dirname(__FILE__) . '/numbers/', 777);
}

for ($i = 0; $i <= 80; $i++) {
    $text = ($i <= 9)? ' ' . $i : $i;
    $im = imagecreatetruecolor(16, 16);
    imagealphablending($im, true);

    // Create some colors
    $white = imagecolorallocatealpha($im, 255, 255, 255, 0);
    $transp = imagecolorallocatealpha($im, 0, 0, 0, 127);
    // $grey = imagecolorallocate($im, 128, 128, 128);
    // $black = imagecolorallocate($im, 0, 0, 0);

    imagefill($im, 0, 0, $transp);
    imagesavealpha($im, true);
    imagettftext($im, $fontsize, 0, 1, 11, $white, $font, $text);

    $imagepath = 'numbers/' . $i . '.png';
    imagepng($im, $imagepath);
    readfile($imagepath);
    imagedestroy($im);
}
?>

Example (using ubuntu mono):