urgent question

alanz

Hi all,

I met a problem when coding php. I read a web page from a url and save it to a file in my server. I used fopen, fread functions. And I read that page again to a variable A, and read the file content to a variable B. When I compare two variables, the result is always false. I know the web page is not changed. And I guess there could be some problem with carrige returns. Can any body tell me what can I do?

This is urgent to keep my work going well.

Thanks

planetsim

you seem to only explained the surface of your problem. We have no code to go off, no idea what you are trying to get to match against the webpage.

alanz

Hi,

The sequence is like this:

$fp = fopen("www.someplace.com/a.php", "r");
$content = fread($fp, 256); // ommit the while loop here for whole stream
then write this $content to a local file in web server using fwrite(). suppose file name is a.txt.
then read the $content again from the same url as step 1.
read file content of a.txt to $local_content. using fread();

then I have two string variables: $content and $local_content.

the result of ($content == $local_content) is false, which is obviously not what I want. The two variables should hold the same value.

I am sure there is no coding error regarding file reading and url remote reading.

I guess the os did something to the string when write to file.

Can anyone tell where the problem is?

Weedpacket

Are you using a Windows machine?

alanz

yes the web server is a windows 2000 server

Weedpacket

That could be it then. Windows might be changing the newline characters to its own convention (see the third note on the [man]fopen[/man] page).

nemonoman

instead of the fopen($filename,'r'),

try it using a binary read:

fopen($filename,'rb'),

Weedpacket

Originally posted by nemonoman
instead of the fopen($filename,'r'),

try it using a binary read:

fopen($filename,'rb'),

As suggested in the third note on the [man]fopen[/man] page, along with a lot of other information that could be useful to know.