未定义的偏移量问题PHP

Question

I have a variable $newExtract[$x][3]. When I try to explode it as:

explode("/", $newExtract[$x][3])

It gives me error message:

"Notice: Undefined offset: 3 in C:\xampp\htdocs\torrent\classes\sm9.class.php on line 63".

But, when I echo it using echo $newExtract[$x][3]; die();, it gives me the result as 13/08/2012 20:58.

Can anyone help me what is happening? Why, I am not able to explode it?

Thanks

Answer 1

I've seen several places in PHP where implicit string conversion (or string dereferencing, in this case) causes issues and the simplest path to sanity is using an intermediate variable:

$date = $newExtract[$x][3];
explode("/", $date);

It seems to show up more often with certain internal functions, and I usually run into it more with objects and __toString(), but this wouldn't be the first time for this situation, either.