PHP - filesize() returns an empty string

问题

I have a strange problem. I have an image which i need to upload to a file server. I 'm using php to do this. The image permissions are the following

-rw-r--r--. 1 apache apache  148041 Dec 22 08:25 Not.jpg

I checked that the file exists. I have downloaded the file and found it to be ok. it's original size is 60 KB. Permissions are also fine.

When I do the following

$filepath = "../uploads/".$file_name;
$image = fopen($filepath, "rb");
echo file_exists($filepath).' ';
echo filesize($filepath). 'bytes ';
echo exif_read_data($filepath). ' ';

The output is 1 bytes 200

1 - File Exists
bytes - This is where the error occurs. filesize() is returning an empty string here
200 - server response

What is the correct way to load this file ?

回答1:

As reference to fopen manual of PHP the modes should be either read or write. You are using undefined mode rb. try using this

$image = fopen($filepath, "r");

来源：https://stackoverflow.com/questions/34429373/php-filesize-returns-an-empty-string