PHP - Numbers

There are two types of Numbers can be declared with php.

• Whole Numbers
  
  Integer data type uses to store positive or negative whole Numbers (without decimal points). It is not required to define integers because php is a loosely typed language. You are define a whole number without double quotes then it automatically evaluate as an integer value. But you can force the value store as integer by using casting. 
  Ex:
  1, -50
  $num = 50 // Numbers are define without double or single quotes
  $num = (int) 50 // This is a casting example. Here force to store the value as integer.
  $num = (int) "5years" // Taken the value as 5
  $num = (int) "age10" // Taken the value as 0 


• Real Numbers
  Double and Float data type uses to store positive or negative whole Numbers (with decimal points). 
  Ex:
  15.3325, -5.586240
  $num = 50.5589// Real Numbers are define without double or single quotes
  $num = (double) 50.569 // This is a casting example. Here force to store the value as real number.
  $num = (double) "5.85Km" // Taken the value as 5.85
  $num = (double) "age10.6" // Taken the value as 0
  $num = (float) "10.53yards" // Taken the value as10.53