Cannot access empty property in PHP

Error : 

  Cannot access empty property in Test.php on line 90

Reason  : 

1. You put a dollar sign in the wrong place on a member variable.

$this->$test = 8;   // $test is wrong

Possible solution :

1. Put your dollar sign in correct place.

 $this->test = 8;    // test is right

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Error Messages in Rails - {{attribute}} {{message}}

Error : Error Messages in Rails - {{attribute}} {{message}}

Reason  : 

1. You'll get this error when running Rails 2.3.8 and older.

Possible solution :

1. Check for correct version of i18n.
2. First check installed i18n version and then open your Gemfile to see correct version of i18n.
3. Uninstall incompatible i18n version  and install correct version of i18n found in Gemfile

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