Is using the same variable name within two different functions ok?

[webref.eu]

Hi All

 

I'm using the two functions given below on the same page of code.  You'll notice that they both contain the same variable, i.e. $result.  I think this is fine, as the scope of the variable will be limited to within the function.  Would you agree?  I just want to check I'm not going to cause myself any headaches. 

 

Thanks all. 

 

 

 

//CODE STARTS

 

function IsValidUsername($Username) {

  $result = TRUE;

 

  //ereg() searches a string for matches to the regular expression given in pattern in a case-sensitive way.

  //in regular expression, ^ means anything that is not

  if(ereg('[^A-Za-z0-9]', $Username)) {

    $result = FALSE;

  }

  return $result;

}

 

 

 

 

function IsValidPassword($Password) {

  $result = TRUE;

 

  //ereg() searches a string for matches to the regular expression given in pattern in a case-sensitive way.

  //in regular expression, ^ means anything that is not

  if(ereg('[^A-Za-z0-9]', $Password)) {

    $result = FALSE;

  }

  return $result;

}

 

//CODE ENDS

[wildteen88]

yes that is fine. Functions have their own variable scope.

[.josh]

Although I would recommend using just one function called IsValid(), seeing as how both of those functions do the exact same thing...