How I am able to do following in Php, it is not throwing any error, please explain

<?php

 class test
 {

   func开发者_如何学运维tion test_print($myvar)
   {
      echo $myvar;
   }
 }

  $my_test = new test();
  $my_test->a = 3;
  $my_test->test_print($my_test->a);

?>

How I am able to create a new variable dynamically outside class, this is not Oops.. please correct if I am missing something.

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PHP allows dynamic properties, like other dynamic languages, such as JavaScript.

It can be useful, but generally is not used an awful lot in PHP.

There was a blog article I found, that shows how you can prevent dynamic properties if you really desire it gone.

Though it is faster to use dynamic properties directly than using the __get() and __set() magic methods.