我嘗試了 2 個實現，如下所示。兩者都工作得很好，但當我嘗試混合它們時，它不再工作了。$output['status']=FALSE;set_time_limit(0);$allowedImageType = array("image/gif", "image/jpeg", "image/pjpeg", "image/png", "image/x-png" );if ($_FILES['image_file_input']["error"] > 0) { $output['error']= "File Error";}elseif (!in_array($_FILES['image_file_input']["type"], $allowedImageType)) { $output['error']= "Invalid image format";}elseif (round($_FILES['image_file_input']["size"] / 1024) > 4096) { $output['error']= "Maximum file upload size is exceeded";} else { $temp_path = $_FILES['image_file_input']['tmp_name']; $file = pathinfo($_FILES['image_file_input']['name']); $fileType = $file["extension"]; $photo_name = $productname.'-'.$member_id."_".time(); $fileName1 = $photo_name . '-125x125' . ".jpg"; $fileName2 = $photo_name . '-250x250' . ".jpg"; $fileName3 = $photo_name . '-500x500' . ".jpg"; $small_thumbnail_path = "uploads/large/"; createFolder($small_thumbnail_path); $small_thumbnail = $small_thumbnail_path . $fileName1; $medium_thumbnail_path = "uploads/large/"; createFolder($medium_thumbnail_path); $medium_thumbnail = $medium_thumbnail_path . $fileName2; $large_thumbnail_path = "uploads/large/"; createFolder($large_thumbnail_path); $large_thumbnail = $large_thumbnail_path . $fileName3; $thumb1 = createThumbnail($temp_path, $small_thumbnail,$fileType, 125, 125 ); $thumb2 = createThumbnail($temp_path, $medium_thumbnail, $fileType, 250, 250); $thumb3 = createThumbnail($temp_path, $large_thumbnail,$fileType, 500, 500); if($thumb1 && $thumb2 && $thumb3) { $output['status']=TRUE; $output['small']= $small_thumbnail; $output['medium']= $medium_thumbnail; $output['large']= $large_thumbnail; }}echo json_encode($output);功能文件function createFolder($path){ if (!file_exists($path)) { mkdir($path, 0755, TRUE); }}
1 回答
PIPIONE
TA貢獻1829條經驗 獲得超9個贊
嘗試這個縮略圖函數，它獲取源圖像資源和縮略圖大小，并返回縮略圖的新圖像資源。
function createThumbnail($src, int $width = 100, int $height = null) {
// Ensure that src is a valid gd resource
if (!(is_resource($src) && 'gd' === get_resource_type($src))) {
throw new InvalidArgumentException(
sprintf("Argument 1 of %s expected type resource(gd), %s supplied", __FUNCTION__, gettype($src))
);
}
// Extract source image width, height and aspect ratio
$source_width = imagesx($src);
$source_height = imagesy($src);
$ratio = $source_width / $source_height;
// We know that width is always supplied, and that height can be null
// We must solve height according to aspect ratio if null is supplied
if (null === $height) {
$height = round($width / $ratio);
}
// Create the thumbnail resampled resource
$thumb = imagecreatetruecolor($width, $height);
imagecopyresampled($thumb, $src, 0, 0, 0, 0, $width, $height, $source_width, $source_height);
return $thumb;
}
鑒于上面的代碼，您現在可以使用這樣的函數
// Get uploaded file information as you have
// Create your source resource as you have
$source = imagecreatefromstring(file_get_contents($fn));
// Create thumbnails and save + destroy
$thumb = createThumbnail($source, 500);
imagejpeg($thumb, $thumb500TargetPath, 90);
imagedestroy($thumb);
$thumb = createThumbnail($source, 250);
imagejpeg($thumb, $thumb250TargetPath, 90);
imagedestroy($thumb);
$thumb = createThumbnail($source, 125);
imagejpeg($thumb, $thumb125TargetPath, 90);
imagedestroy($thumb);
// Don't forget to destroy the source resource
imagedestroy($source);
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