PHP 图片上传压缩无效。你能看看我的代码吗？

Question

你们是我最后的救命稻草。我已经解决这个问题一天多了，但仍然找不到解决方案。我在下面列出的代码工作正常。它将重命名的图像上传到正确的目录。唯一不起作用的是它不压缩图像。新图像的文件大小与原始图像的大小完全相同。

我想知道你是否可以看看我下面的代码，看看你是否能发现我做错了什么？

我有一个图像压缩代码，是从我在本网站和其他网站上看到的示例中借用的。就是这个。

function compress_image($source_url, $destination_url, $quality) {

  $info = getimagesize($source_url);

  if($info['mime'] == 'image/jpeg' || $info['mime'] == 'image/jpg') {

    $image = imagecreatefromjpeg($source_url);

  } else if ($info['mime'] == 'image/gif') {

    $image = imagecreatefromgif($source_url);

  } else if ($info['mime'] == 'image/png') {

    $image = imagecreatefrompng($source_url);

  } else {
    $image = null;
  }

  imagejpeg($image, $destination_url, $quality);
  return $destination_url;
}

这是我的图片上传脚本。

if(isset($_FILES['fileToUpload']) AND !empty($_FILES['fileToUpload']["name"])) {
  if(is_uploaded_file($_FILES['fileToUpload']["tmp_name"])) {

    $target_dir    = '../members/images/'.$global_user_id.'/projects/'.$url_project_id.'/';
    $target_file   = $target_dir . basename($_FILES["fileToUpload"]["name"]);
    $imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);

    $source_file   = $_FILES["fileToUpload"]["tmp_name"];
    $random_name   = generateRandomString(10);
    $new_image     = $random_name . '.' . $imageFileType;
    $resized_image = compress_image($source_file, $new_image, 75);
    $new_file_path = $target_dir . $resized_image;

    if(!is_dir($target_dir)){
      mkdir($target_dir, 0775, true);
    }

    $uploadOk      = 1;
    // Check if image file is a actual image or fake image
    $check = getimagesize($source_file);
    if($check !== false) {
     //   echo "File is an image - " . $check["mime"] . ".";
        $uploadOk = 1;
    } else {
        $errors[] = 'File is not an image!';
        $uploadOk = 0;
    }
    // Check if file already exists
    if (file_exists($target_file)) {
        $errors[] = 'Sorry, file already exists!';
        $uploadOk = 0;
    }
    // Check file size
    if ($_FILES["fileToUpload"]["size"] > 5000000) {
        $errors[] = 'Sorry, your file size is bigger than 5mb!';
        $uploadOk = 0;
    }
    // Allow certain file formats
    if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg" && $imageFileType != "gif" && $imageFileType != "JPG" && $imageFileType != "PNG" && $imageFileType != "JPEG" && $imageFileType != "GIF") {
        $errors[] = 'Sorry, only JPG, JPEG, PNG & GIF files are allowed!';
        $uploadOk = 0;
    }
    // Check if $uploadOk is set to 0 by an error
    if($uploadOk == 0) {
        $errors[] = 'Sorry, your file was not uploaded!';
    // if everything is ok, try to upload file
    } else {

      if(move_uploaded_file($source_file, $new_file_path)) {

        echo 'success';

      } else {
        $errors[] = 'Sorry, there was an error uploading your file!';
      }
    }
  } else {
    $errors[] = 'You must upload an image!';
  }
}

Answer 1

这一行是问题所在：

if(move_uploaded_file($source_file, $new_file_path)) {

您正在移动原始文件。你应该移动 $new_image:

if(rename($new_image, $new_file_path)) {

PHP 图片上传压缩无效。你能看看我的代码吗？

PHP image upload compression not working. Can you take a look at my code?

php

compression

upload

resize

image