forms - How do you change a text variable to an int in PHP? -


I have a variable that is inputted in a text field by a POST call. 

  Lenght:    
 "text" id = "lenght" size = "2" />

From php code: 

  $ length = $ _POST ['band']; $ Url = substr ($ url, 0, $ length);

It does not seem to work and there is only one reason that I think this is not working, because the $ length is defined as text and No interval

two things:

  1. this does not work Because you misspelled length & lt; -> Length

  2. The correct way to convert the string to an integer is using the function infall.

$ length = interval ($ _ POST ['length']); $ Url = substr ($ url, 0, $ length);

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