问题
I have a weird problem, I am using print_r($obj) in Joomla YOOtheme ZOO extension and it returns a blank page. it just act as die() !
it should output the object but it does not.
Please note that print_r() is working fine with some other objects and variables.
I am using XAMPP on Windows.
Any help?
Upon executing print_r() and var_dump(), the page is just blank, no error, view source shows:
<html>
<head></head>
<body></body>
</html>
Error reporting is turned on.
回答1:
It is posible that $obj is too big to load, and grabs a lot of memory after which the script stops to work.
Thanks
回答2:
Is error reporting turned on?
If not add to your code:
ini_set("display_errors", "1");
回答3:
If it's outputting nothing, $obj contains nothing. Try var_dump() instead. Also, make sure you're seeing all errors that PHP is producing:
ini_set('display_errors', 1);
error_reporting(-1);
来源：https://stackoverflow.com/questions/8957150/print-r-return-blank-page