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PHP - Checking if a remote file exists
Posted: Wed Jun 04, 2003 10:11 am
by boycee
Code: Select all
if ($type == "Logos")
{
if (fopen "http://images.custommobile.com/image_files/'.$page.'.gif", "r") == false)
{
echo 'INCORRECT';
}
else
{
echo '<img src="http://images.custommobile.com/image_files/'.$page.'.gif" />';
}
}
Am i on the right track.
Posted: Wed Jun 04, 2003 4:38 pm
by delorian
Try this modification:
Code: Select all
if ($type == "Logos")
{
if (@fopen("http://images.custommobile.com/image_files/".$page.".gif", "r"))
{
echo '<img src="http://images.custommobile.com/image_files/".$page.".gif" />';
}
else { echo 'INCORRECT'; }
}
But the allow_url_fopen directive MUST be set to ON in your php.ini if you want to open a file using fopen with protocol.
http://pl.php.net/manual/en/ref.filesys ... -url-fopen
Posted: Wed Jun 04, 2003 5:01 pm
by boycee
i tried the code you suggested, and it still just hangs.
What you mean php.ini ?
I dont understand what you mean by this file.
Thanks for the help so far.
Posted: Thu Jun 05, 2003 1:15 am
by delorian
php.ini is the PHP confiugration file. Probably you don't have access to it on your web serwer (or maybe you have if its yours

), so if you want to see if allow_url_open is set see the phpinfo()'s PHP Core section.
Just make a script with code:
and use it.
BTW: Visit
http://php.net , it's a great knowledge library

Posted: Thu Jun 05, 2003 6:43 am
by detrox
I am puzzled. If I can fopen a remote file, can I read it by fread? If I can read it then how about to read a .php file.
And I do not catch the '@fopen'. What does it mean? I can not find it in PHP Manual.
Posted: Thu Jun 05, 2003 9:13 am
by delorian
detrox wrote:I am puzzled. If I can fopen a remote file, can I read it by fread? If I can read it then how about to read a .php file.
Yes, you will open the .php file, and you will recieve the parsed content, the same that you get when visiting the page... I think so, I've tried this some time ago, and it worked like this.
detrox wrote:
And I do not catch the '@fopen'. What does it mean? I can not find it in PHP Manual.
Probably you didn't search good enough

. @ silences error messages generated by functions.
Thanks, delorian.
Posted: Thu Jun 05, 2003 9:48 am
by detrox
Thanks, delorian. I got it. But for my poor searching ability, I still can not find it in my manual. I try '@','operator','silence error message' but these do not work.

Posted: Thu Jun 05, 2003 10:40 am
by twigletmac
Hi, the manual calls the @ sign an 'error control operator':
http://php.net/manual/language.operator ... ontrol.php
Mac