loadHTML('' . $html);
libxml_clear_errors();
$imgs = $dom->getElementsByTagName('img');
foreach ($imgs as $img) {
$src = $img->getAttribute('src');
// Match base64 images
if (preg_match('/^data:image\/([a-zA-Z0-9+]+);base64,(.*)$/s', $src, $matches)) {
$savedAny = true; // <-- We are actually saving at least 1 image
// Create folder ONLY when needed
if (!$folderCreated) {
if (!is_dir($targetDir)) {
mkdir($targetDir, 0775, true);
}
$folderCreated = true;
}
$mimeType = strtolower($matches[1]);
$base64 = $matches[2];
$binary = base64_decode($base64);
if ($binary === false) {
continue;
}
// Extension mapping
switch ($mimeType) {
case 'jpeg':
case 'jpg': $ext = 'jpg'; break;
case 'png': $ext = 'png'; break;
case 'gif': $ext = 'gif'; break;
case 'webp': $ext = 'webp'; break;
default: $ext = 'png';
}
// Secure random filename
$uid = bin2hex(random_bytes(16));
$filename = "img_{$uid}.{$ext}";
$filePath = $targetDir . $filename;
if (file_put_contents($filePath, $binary) !== false) {
$webPath = "/" . $baseWebPath . $ownerId . "/" . $filename;
$img->setAttribute('src', $webPath);
}
}
}
// If no images were processed, return original HTML immediately
if (!$savedAny) {
return $html;
}
// Extract body content only
$body = $dom->getElementsByTagName('body')->item(0);
if ($body) {
$innerHTML = '';
foreach ($body->childNodes as $child) {
$innerHTML .= $dom->saveHTML($child);
}
return $innerHTML;
}
return $html;
}
function cleanupUnusedImages(string $html, string $folderFsPath, string $folderWebPath) {
$folderFsPath = rtrim($folderFsPath, '/\\') . '/';
$folderWebPath = rtrim($folderWebPath, '/\\') . '/';
if (!is_dir($folderFsPath)) {
return; // no folder = nothing to delete
}
// 1. Get all files currently on disk
$filesOnDisk = glob($folderFsPath . "*");
// 2. Find all ![]()
preg_match_all('/]+src=["\']([^"\']+)["\']/i', $html, $matches);
$htmlImagePaths = $matches[1] ?? [];
// Normalize paths: keep only filenames belonging to this template folder
$referencedFiles = [];
foreach ($htmlImagePaths as $src) {
if (strpos($src, $folderWebPath) !== false) {
$filename = basename($src);
$referencedFiles[] = $filename;
}
}
// 3. Delete any physical file not referenced in the HTML
foreach ($filesOnDisk as $filePath) {
$filename = basename($filePath);
if (!in_array($filename, $referencedFiles)) {
unlink($filePath);
}
}
}