PHP variables are dynamic in type so I can do:$x = 'hello world!';  $x = strlen($x);  Sometimes this is trivial and I could save many lines of code, but it reduces clarity. I'm using a text editor, but I guess IDEs (and programmers) could be confused if a variable change type.Less trivial case:  if (is_string($data))      $lines = explode(PHP_EOL,$data);  else      $lines = $data;  versus:if (is_string($data))      $data = explode(PHP_EOL,$data);  Of course I could do something like:$lines = is_string($data) ? explode(PHP_EOL,$data) : $data;  But that's not the point.BTW: I'm assuming $data is string or array and this should be documented as such.
What is the impact of re-defining a dynamic type variable (such as in PHP)?
php;variables