警告:file_exists() 期望参数 1 是有效路径，数组以 C:\ 给出

Question

我出于某种奇怪的原因收到此警告... 这是完整的警告：

Warning: file_exists() expects parameter 1 to be a valid path, array given in C:wamp64wwwPetrogas NCR applicatieInsert.php on line 84

这是我的代码：

for($i = 0; $i < count($_FILES['attachments']['name']); $i++)
{
function resize_image($file,$max_resolution) {
if (file_exists($file)) {
$original_image = imagecreatefromjpeg($file);
$original_width = imagesx($original_image);
$original_height = imagesy($original_image);
$ratio = $max_resolution / $original_width;
$new_width = $max_resolution;
$new_height = $original_height * $ratio;
if ($new_height > $max_resolution) {
$ratio = $max_resolution / $original_height;
$new_height = $max_resolution;
$new_width = $original_width * $ratio;
}
if ($original_image) {
$new_image = imagecreatetruecolor($new_width, $new_height);
imagecopyresampled($new_image,$original_image,0,0,0,0,$new_width,$new_height,$original_width,$original_height);
imagejpeg($new_image,$file,90);
}
}
}
$filetmp = $_FILES["attachments"]["tmp_name"][$i];
$filename = $_FILES["attachments"]["name"][$i];
$filepath = "images/".$filename;
if (move_uploaded_file($filetmp,$filepath)) {
$file = $_FILES['attachments']['name'];
resize_image($file, '50');
$querypictureupload = "INSERT INTO file_upload(ncrnummer,filename) VALUES ('$ncrnummer','$filename')";
$result = mysqli_query($conn, $querypictureupload);
}
}

我正在尝试上传图像并调整其大小。但是得到了这个奇怪的警告...

Answer 1

更改脚本，因为您不应该在 for 循环中创建函数

for($i = 0; $i < count($_FILES['attachments']['name']); $i++)
{        
$filetmp = $_FILES["attachments"]["tmp_name"][$i];
$filename = $_FILES["attachments"]["name"][$i];
$filepath = "images/".$filename;
if (move_uploaded_file($filetmp,$filepath)) {
$file = $_FILES['attachments']['name'];
resize_image($file, '50', $filepath);
$querypictureupload = "INSERT INTO file_upload(ncrnummer,filename) VALUES ('$ncrnummer','$filename')";
$result = mysqli_query($conn, $querypictureupload);
}
}

在 for 循环函数范围之外创建函数

并且您需要file_exists函数中传递文件路径以检查文件是否存在

function resize_image($file,$max_resolution, $filepath) {
if (file_exists($filepath)) {
$original_image = imagecreatefromjpeg($file);
$original_width = imagesx($original_image);
$original_height = imagesy($original_image);
$ratio = $max_resolution / $original_width;
$new_width = $max_resolution;
$new_height = $original_height * $ratio;
if ($new_height > $max_resolution) {
$ratio = $max_resolution / $original_height;
$new_height = $max_resolution;
$new_width = $original_width * $ratio;
}
if ($original_image) {
$new_image = imagecreatetruecolor($new_width, $new_height);
imagecopyresampled($new_image,$original_image,0,0,0,0,$new_width,$new_height,$original_width,$original_height);
imagejpeg($new_image,$file,90);
}
}
}