从URL复制图像，更改名称并保存到文件夹

时间：2014-09-04 00:07:56

标签： php

我即将开始使用PHP脚本导入csv数据库。

csv有一个包含产品图片网址的列。

我需要做的是获取图像，检查它是什么类型的文件（jpg，png等），更改名称，将文件保存到服务器上的文件夹，然后将文件名插入数据库。

插入数据库我可以做的事情，它重新命名的文件与我混淆。

是否可以像上传文件一样获取信息，例如：

使用html格式的文件输入上传文件

$_FILES['file']['name'];
or
$_FILES['file']['type'];

如果下载文件，可能会这样吗

$downloaded_image['name'];
or
$downloaded_image['type'];

还是完全不合适？

我以前从未这样做过，而且stackoverflow上的大部分答案都没有完全回答我的问题，所以希望有人能指出我正确的方向如何做到这一点。

EDITED /更新：

这样的事情是否可以获得文件属性...... 

$image_id = '123456';
$the_image = file_get_contents($downloaded_image);
$image_name = $the_image['name'];
$image_type = $the_image['type'];

$new_name = $image_id . '.' . $image_type;

$img_path = '/images/';
$save_image = file_put_contents($img_path, $new_name);
if($save_image) {
echo 'image saved';
} else {
echo 'Not Saved';
}

希望我有所作为。

更新：这是脚本原样（仍需要整理）

define('CSV_PATH','E:/xampp/htdocs/aff/csv-import/');
// path where your CSV file is located

$csv_file = CSV_PATH . "infotuts.csv"; // Name of your CSV file
$csvfile = fopen($csv_file, 'r');
$theData = fgets($csvfile);
$i = 0;
while (!feof($csvfile)) {
    $csv_data[] = fgets($csvfile, 1024);
    $csv_array = explode(",", $csv_data[$i]);
    $insert_csv = array();
    $insert_csv['test_id'] = $csv_array[0];
    // $insert_csv['test_aw_id'] = $csv_array[1];
    // $insert_csv['test_name'] = $csv_array[2];
    $image_id = $csv_array[1];
    $download_image = $csv_array[2];

    // Store the original filename
    $original_name = basename($download_image);

    // Original extension by string manipulation
    $original_extension = substr($original_name, strrpos($original_name, '.')); // ".jpg"

    // An array to match mime types from finfo_file() with extensions
    // Use of finfo_file() is recommended if you can't trust the input
    // filename's extension
    $types = array('image/jpeg' => '.jpg','image/png' => '.png','image/gif' => '.gif');

    // Get the file and save it
    $img = file_get_contents($download_image);
    $stored_name = 'images/' . $image_id . $original_extension;
    if ($img) {
      file_put_contents($stored_name);

      // Get the filesize if needed
      $size = filesize($stored_name);

      // If you don't care about validating the mime type, skip all of this...
      // Check the file information
      $finfo = finfo_open(FILEINFO_MIME_TYPE);
      $mimetype = finfo_file($finfo, $stored_name);

      // Lookup the type in your array to get the extension
      if (isset($types[$mimetype])) {
        // if the reported type doesn't match the original extension, rename the file
        if ($types[$mimetype] != $original_extension) {
          rename($stored_name, 'images/' . $image_id . $types[$mimetype]);
        }
      }
      else {
        // unknown type, handle accordingly...
      }
      finfo_close($finfo);

        $query = "INSERT INTO test(test_id, test_aw_id, test_name) VALUES ('', '$image_id', '$stored_name')";
        $n=mysqli_query($con, $query);
        $i++;
    }
    else {
      echo 'Could not get file';
    }

}
fclose($csvfile);

2 个答案:

答案 0 :(得分：4)

通过file_get_contents()检索文件，您将无法获得有关其格式的任何特别有用的信息。它不包含类似于$_FILES中的上传内容的元数据。

如果图片网址应该是带有扩展名的完整文件名，并且您信任该扩展程序是正确的，那么您可以将其用作您的类型。但是，使用FILEINFO_MIME_TYPE选项的finfo_file()将探测文件以返回其mime类型，如image/jpeg或image/png。

因此，您的工作流程将是：

  1. 使用file_get_contents()
    2. 检索图像
  2. 使用新名称
    3. 将其保存到本地文件系统
  3. 致电finfo_file()以检索其mime类型
  4. 使用所需的详细信息更新您的数据库。

    5. 示例：

    // Assume this URL for $download_image from your CSV
$download_image = 'http://example.com/images/img1.jpg';
$image_id = 12345;

// Store the original filename
$original_name = basename($download_image); // "img1.jpg"
// Original extension by string manipulation
$original_extension = substr($original_name, strrpos($original_name, '.')); // ".jpg"

// An array to match mime types from finfo_file() with extensions
// Use of finfo_file() is recommended if you can't trust the input
// filename's extension
$types = array(
  'image/jpeg' => '.jpg',
  'image/png' => '.png',
  'image/gif' => '.gif'
  // Other types as needed...
);

// Get the file and save it
$img = file_get_contents($download_image);
$stored_name = 'images/' . $image_id . $original_extension;
if ($img) {
  file_put_contents($stored_name, $img);

  // Get the filesize if needed
  $size = filesize($stored_name);

  // If you don't care about validating the mime type, skip all of this...
  // Check the file information
  $finfo = finfo_open(FILEINFO_MIME_TYPE);
  $mimetype = finfo_file($finfo, $stored_name);

  // Lookup the type in your array to get the extension
  if (isset($types[$mimetype])) {
    // if the reported type doesn't match the original extension, rename the file
    if ($types[$mimetype] != $original_extension) {
      rename($stored_name, 'images/' . $image_id . $types[$mimetype]);
    }
  }
  else {
    // unknown type, handle accordingly...
  }
  finfo_close($finfo);

  // Now save all the extra info you retrieved into your database however you normally would
  // $mimetype, $original_name, $original_extension, $filesize
}
else {
  // Error, couldn't get file
}

    如果您想从已有的扩展名中获取mimetype字符串，并且未使用finfo验证类型，可以将$types翻转为包含值的交换键。

    if (in_array($original_extension), $types) {
  $mimetype = array_flip($types)[$original_extension];
}

答案 1 :(得分：0)

<?php

include_once('includes/functions.php');

define('CSV_PATH','E:/xampp/htdocs/aff/csv-import/');

$csv_file = CSV_PATH . "infotuts.csv";
$csvfile = fopen($csv_file, 'r');
$theData = fgets($csvfile);
$i = 0;
while (!feof($csvfile)) {
    $csv_data[] = fgets($csvfile, 1024);
    $csv_array = explode(",", $csv_data[$i]);
    $insert_csv = array();
    $insert_csv['test_id'] = $csv_array[0];
    $insert_csv['test_aw_id'] = $csv_array[1];
    $insert_csv['test_name'] = $csv_array[2];

    $image_id = $insert_csv['test_aw_id'];
    $download_image = $insert_csv['test_name'];

    $original_name = basename($download_image);

    $original_extension = substr($original_name, strrpos($original_name, '.')); // ".jpg"

    $types = array('image/jpeg' => '.jpg','image/png' => '.png','image/gif' => '.gif');

    $img = file_get_contents($download_image);
    $stored_name = $image_id . $original_extension;
    $stored_name = trim($stored_name);
    if ($img) {
      file_put_contents($stored_name, $img);

      //$size = filesize($stored_name);

      $finfo = finfo_open(FILEINFO_MIME_TYPE);
      $mimetype = finfo_file($finfo, $stored_name);
      if (isset($types[$mimetype])) {
        if ($types[$mimetype] != $original_extension) {
          rename($stored_name, 'E:/xampp/htdocs/aff/images/products/' . $stored_name);

        }
      }
      else {

      }
      finfo_close($finfo);

        $query = "INSERT INTO test(test_id, test_aw_id, test_name) VALUES ('', '$image_id', '$stored_name')";
        $n=mysqli_query($con, $query);
        $i++;
    }
    else {
      echo 'Could not get file';
    }

}
fclose($csvfile);

echo "File data successfully imported to database!!";
mysqli_close($con);
?>
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