Disable a file include if it generates error (in php)

I would like to implement a simple plugin system for my script. I'll be including the files of the plugins which the user selects as available.

Currently, if a开发者_如何学Cny of the files has some parse error, it causes the complete thing to go down, until I hack into the db to remove that plugin entry.

Is there any easy way to do this? (Somehow check the files for parse errors atleast)?

You could make a HTTP request to a PHP file that tries to include the file, and outputs "OK" at the end.

Check_include.php:

$filename = $_GET["plugin"];

$filename = sanitize_filename($filename); // Here you make sure only plugins can be loaded

include ($filename);
echo "OK";

then, in your admin panel or whatever, call

file_get_contents("http://mydomain/check_include.php?plugin=my_new_plugin");

and see whether the result contains the word "OK". If the result is okay, there was no fatal error, and you can activate the plugin; otherwise, you can even output the error message that got output when trying to include it.

WordPress uses a variation of this involving an IFRAME to check new plugins.

Note: Making a HTTP request is expensive. You should under no circumstances do this every time the plugin is included, but only once on installation. Use a flag of some sort (e.g. a underscore _ in front of the plugin name) to enable / disable plugins.

No. A parse error is a fatal error that you cannot recover from.