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);
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：
file_get_contents() finfo_file()以检索其mime类型示例：
// 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);
?>