1 error, pls help me !

[Finantech]

I'm using a VPS at Jaguarpc. a error occured when customer visit my site.

Error:

Warning: Invalid argument supplied for foreach() in /home/mama/public_html/system/index.php on line 96


pls help me to resolve this problem !!!

La Tuan

[JPC-Greg]

We need to see the source of line 96, in fact lines 95-97 to be able to help you.

[Finantech]

Here are in fact lines: 92-101

92 $news_array = array();
93 $i = 2;
94 $week = array();
95 $lang['dayarray'] = array("1","2","3","4","5","6","7");
96 foreach ($lang['dayarray'] as $day) {
97 while ($row = $sql->fetchrow()) {
98
99 unset($comments);
100 $sql2 = $db->Query("SELECT id FROM
101 ".PREFIX."_newscomments WHERE newsid='".$row->newsid."'");
102 $comments = $sql2->numrows();

pls help me, thanks !

[Gwaihir]

I copy-pasted this foreach and the stuff above it and it runs fine :?

[Finantech]

in fact, some computers run fine, but some computer occured this error, I don't know why ????

[jason]

I see no reason why this wouldn't work. PHP runs on the server with the output of the script being returned to the user's browser, so it should work consistantly on every computer that hits it.

The only thing that I can think of that would cause an error like that one is the variable you pass into foreach() being something other than an array, but from the code you pasted it looks impossible for $lang['dayarray'] to be anything but an array.

Are there any special circumstances in which this script stops working that yoou've noticed? Do you pass any variables to it by submitting a form or by adding a query sting to the URL? Are you using sessions or cookies at all? Just some thoughts that might help you isolate the problem...

--Jason

[G.Bloke]

I have often run into strange problems with PHP. Variables/arrays which should not be empty being so etc. It is incredibly frustrating and I've never adequately been able to explain it. I've wondered if it wasn't due to the way PHP actually parses the code, my understanding is that it uses a two-pass system which might cause these sorts of problems. Alternatively it might be due to optmizers like Zend Optimizer which are used on Jag servers.

Try sticking an

if (isset($lang['dayarray'])) { .... }

round that foreach. Strange as it sounds in a couple of cases that has fixed the problem for me, it is suddenly able to see $lang['dayarray'].