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Bug #31080 ftp_connect() fails on a system where there is a large number of open files.
Submitted: 2004-12-14 04:12 UTC Modified: 2005-04-24 15:56 UTC
Avg. Score:5.0 ± 0.0
Reproduced:3 of 3 (100.0%)
Same Version:2 (66.7%)
Same OS:2 (66.7%)
From: jon at destra dot com Assigned:
Status: Wont fix Package: FTP related
PHP Version: 4CVS-2005-03-21 OS: *
Private report: No CVE-ID: None
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 [2004-12-14 04:12 UTC] jon at destra dot com
ftp_connect fails on a server with a large number of open files.

Eg.  In a virtual hosting environment where Apache has 1000+ log files open.

Reproduce code:
$ftp1 = ftp_connect('') or die("Couldn't connect to server");

Expected result:
Established connection with a handle via $ftp1.

Actual result:
The connection fails.


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 [2004-12-14 14:33 UTC]
You just run out of filedescriptors. This is not something PHP can fix for you. You either need to cut down in the number of Open files, or adjust your kernel parameters.
 [2004-12-15 00:55 UTC] jon at destra dot com
Ahh, no I didn't.  I have more then enough file descriptors but PHP is not using them.

[root@ozhlin01 root]# cat /proc/sys/fs/file-max

I suspect it is hard coding it's max number of file handles?
 [2004-12-15 02:30 UTC] jon at destra dot com
Please note I opened this ticket at the suggestion of Wez Furlong.  Please also take a look at the following:
 [2004-12-15 13:51 UTC]
We've just been using hacky workarounds for this which I doubt anyone really wants in the 4.3.x tree.  Wez has fixed all such problems properly in 5.0.3 so the proper solution lies there.
 [2004-12-17 02:59 UTC]
Assigning to Wez then, if he would be so nice to fix this in 4.3.x branch too. :)
 [2004-12-17 03:02 UTC]
I don't have the time to back-port the patch, which is why I suggested opening up this bug report.
 [2005-04-24 15:56 UTC]
It works in PHP 5 so use PHP 5.

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