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[PHP] Seeing if a character is not one of those in an array

 
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Mattraks
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PostPosted: Sat Nov 01, 2008 4:26 pm    Post subject: [PHP] Seeing if a character is not one of those in an array Reply with quote
Code:
function CheckIncLink($path){
   $legal_strings = array("a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "/");
   foreach($legal_strings as $lstring){
      $bTempGood = false;
      for($i=1; $i<strlen($path)+1; $i++){
         if(strcmp(StrToLower($path[$i]), $lstring) == 0){
            $bTempGood = true;
            break;
         }
      }
      if($bTempGood == false) {
         return false;
      }
   }
   return true;
}


Well, its supposed to check each character in $path and if it isn't one in the array, then it will return false. It always returns true. Anyone know how to fix it?
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samuri25404
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PostPosted: Sat Nov 01, 2008 4:48 pm    Post subject: Reply with quote
Code:

         if(strcmp(StrToLower($path[$i]), $lstring) != 0){
            return false;
         }

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pkedpker
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Posts: 412
PostPosted: Sat Nov 01, 2008 8:47 pm    Post subject: Reply with quote
what samuri said and don't forget to remove

Code:


    if($bTempGood == false) {
         return false;
      }

completely useless

and remove all the $bTempGood 's they are not needed if you want it to be true just return true if you want it to be false just return false you dont need a variable for it.

You don't have to use arrays you could use built in functions (much much faster)

http://us.php.net/manual/en/function.ctype-alpha.php
to check for abc's only (letters)
http://us.php.net/manual/en/function.ctype-alpha.php
to check for abc's and 123's (Numbers and letters)
http://us.php.net/manual/en/function.ctype-digit.php
to check for 123's only (numbers)
http://us.php.net/manual/en/function.ctype-lower.php
to check for ABCS if any not lower case .. tons of these functions you will see them all..


http://us.php.net/is_numeric
duplicate function same as ctype-digit to check for 123's only (i think this one was made first.. before the ctypes)
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