Tul xxx Tul

Viewing: icon.php

<?php
$srcPath = __DIR__ . '/images/favicon.png';
$candidates = [
  __DIR__ . '/uploaded_img/business_logo.png',
  __DIR__ . '/uploaded_img/business_logo.webp',
  __DIR__ . '/uploaded_img/business_logo.jpg',
  __DIR__ . '/uploaded_img/business_logo.jpeg',
];
foreach ($candidates as $candidate) {
  if (is_file($candidate)) {
    $srcPath = $candidate;
    break;
  }
}
$size = isset($_GET['size']) ? intval($_GET['size']) : 512;
if ($size < 48) $size = 48;
if ($size > 1024) $size = 1024;
$maskable = isset($_GET['maskable']);

$v = isset($_GET['v']) ? (string)$_GET['v'] : '';
$srcMtime = @filemtime($srcPath) ?: 0;
$srcSize = @filesize($srcPath) ?: 0;
$etag = '"' . sha1($srcPath . '|' . $srcMtime . '|' . $srcSize . '|' . $size . '|' . ($maskable ? '1' : '0') . '|' . $v) . '"';
header('ETag: ' . $etag);
header('Cache-Control: public, max-age=31536000, immutable');
header('Vary: Accept-Encoding');
if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && trim((string)$_SERVER['HTTP_IF_NONE_MATCH']) === $etag) {
  http_response_code(304);
  exit;
}

if (!file_exists($srcPath) || !function_exists('imagecreatetruecolor')) {
  header('Location: images/favicon.png');
  exit;
}
$img = @imagecreatefrompng($srcPath);
if (!$img) {
  $data = @file_get_contents($srcPath);
  if ($data === false) {
    header('Location: images/favicon.png');
    exit;
  }
  $img = @imagecreatefromstring($data);
  if (!$img) {
    header('Location: images/favicon.png');
    exit;
  }
}
$w = imagesx($img);
$h = imagesy($img);
$canvas = imagecreatetruecolor($size, $size);
imagealphablending($canvas, false);
imagesavealpha($canvas, true);
$transparent = imagecolorallocatealpha($canvas, 0, 0, 0, 127);
imagefill($canvas, 0, 0, $transparent);
$padRatio = $maskable ? 0.04 : 0.0;
$pad = (int)round($size * $padRatio);
$available = max(1, $size - 2 * $pad);
$scale = min($available / max(1, $w), $available / max(1, $h));
$dstW = max(1, (int)round($w * $scale));
$dstH = max(1, (int)round($h * $scale));
$dstX = (int)round(($size - $dstW) / 2);
$dstY = (int)round(($size - $dstH) / 2);
imagealphablending($canvas, true);
imagecopyresampled($canvas, $img, $dstX, $dstY, 0, 0, $dstW, $dstH, $w, $h);
imagedestroy($img);
header('Content-Type: image/png');
imagepng($canvas, null, 9);
imagedestroy($canvas);
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