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Full Discussion: Debugging Our Computer Science Trivia Feature
The Lounge What is on Your Mind? Debugging Our Computer Science Trivia Feature Post 303040643 by Neo on Sunday 3rd of November 2019 02:04:15 AM
Old 11-03-2019
OK.. there is a problem with Safari and their Cross-Origin Resource Sharing (CORS) implementation, which is causing Javascript errors when ads or videos are served.

This bug is causing an error in the Trivia JS code, so I have am disabling the trivia for guests (not logged in) who are using Safari (for now, in both mobile and desktop):

Code:
<?php
$user_agent = $_SERVER['HTTP_USER_AGENT'];
if ($vbulletin->userinfo['userid'] < '1') {
    if (stripos($user_agent, 'Chrome') !== false) {
        define('ENABLE_SAFARI_UA', true);
    } else {
        if (stripos($user_agent, 'Safari') !== false) {
            define('ENABLE_SAFARI_UA', false);
            $log = '/var/log/apache2/debug/neo_trivia_global_safari_debug.log';
            error_log(date(DATE_RFC822) . ' UA ' . $user_agent . "\n", 3, $log);
        } else {
            define('ENABLE_SAFARI_UA', true);
        }
    }
} else {
    define('ENABLE_SAFARI_UA', true);
}

I will think about another "fix" for this later.
 

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LEARN ABOUT PHP

v8js.__construct

V8JS.__CONSTRUCT(3)							 1						       V8JS.__CONSTRUCT(3)

V8Js::__construct - Construct a newV8Jsobject

SYNOPSIS

       public  V8Js::__construct  TRUE	([string   $object_name  =  "PHP"],  [array   $variables = array()], [array  $extensions = array()], [bool
       $report_uncaught_exceptions])

DESCRIPTION

	Constructs a new V8Js object.

PARAMETERS

	      o $object_name
		- The name of the object passed to Javascript.

	      o $variables
		- Map of PHP variables that will be available in Javascript. Must be an associative array in format array("name-for-js" =>  "name-
		of-php-variable"). Defaults to empty array.

	      o $extensions
		- List of extensions registered using V8Js.registerExtension(3) which should be available in the Javascript context of the created
		V8Js object.

	      Note

		      Extensions registered to be enabled automatically do not need to be listed in this array. Also if an extension has dependen-
		     cies, those dependencies can be omitted as well. Defaults to empty array.

	      o $report_uncaught_exceptions
		-  Controls whether uncaught Javascript exceptions are reported immediately or not. Defaults to TRUE. If set to FALSE the uncaught
		exception can be accessed using V8Js.getPendingException(3).

RETURN VALUES

	Returns a new V8Js context object.

PHP Documentation Group 												       V8JS.__CONSTRUCT(3)
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