OSdata.com

example source code
datavalidation.php

Building a game — open source code This is the actual source code from a new web game. See the game at thissideofsanity.com and read how this was built starting at example code.

This is example code from the SlamZee project and This Side of Sanity, released under Apache License 2.0.

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

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example source code
datavalidation.php

This is example code from the SlamZee project and This Side of Sanity, released under Apache License 2.0.

first pass

A few data validation routines.

<?php

/* FILE NAME /datavalidation.php */

/******************************/
/* ValidateInputforSQL                                  */
/* validate input for SQL                               */
/* the type is used to guarantee that theinput is the correct type */
/* the default value is used if the input is otherwise invalid */
/* returns valid SQL input if validated -- with security protections */
/* returns empty string on failure with empty string as default */
/******************************/
function ValidateInputforSQL($inputdata,$inputtype,$defaultvalue)
{

// change to include better defenses against SQL injection attacks 
if ( $inputtype == 'string' )
  $x = 1; /* placeholder because there is no check here yet because all of the forms actually generate strings as the input */
elseif ( $inputtype == 'integer' )
  {
    if ( !is_numeric($inputdata) )
      $inputdata = ''; /* invalid input, set to empty string */
  }

$inputdata = addslashes($inputdata);

return $inputdata;

} /* ValidateInputforSQL */

/******************************/
/* ValidateOutputforHTML                             */
/* validate output for HTML                           */
/******************************/
function ValidateOutputforHTML($inputdata)
{

// change to include better defenses against HTML attacks

$inputdata = htmlspecialchars($inputdata);

  return $inputdata;

} /* ValidateOutputforHTML */

/******************************/
/* CreateDateForSQL                                    */
/* create date for SQL                                  */
/******************************/
function CreateDateForSQL($inputday,$inputmonth,$inputyear)
{
  // convert parts into correct date

if ($inputmonth < 10)
  $firstpart = $inputyear."-0".$inputmonth;
else
  $firstpart = $inputyear."-".$inputmonth;

if ($inputday < 10)
  $secondpart = "-0".$inputday;
else
  $secondpart = "-".$inputday;

$fulldate = $firstpart.$secondpart;

  return $fulldate;

} /* CreateDateForSQL */

/******************************/
/* CreateDateTimeForSQL                             */
/* create date and time for SQL                     */
/******************************/
function CreateDateTimeForSQL($inputday,$inputmonth,$inputyear,$inputhour,$inputminute,$inputsecond)
{
  // convert parts into correct date and time for SQL

if ($inputmonth < 10)
  $firstpart = $inputyear."-0".$inputmonth;
else
  $firstpart = $inputyear."-".$inputmonth;

if ($inputday < 10)
  $secondpart = "-0".$inputday;
else
  $secondpart = "-".$inputday;

$fulldatetime = $firstpart.$secondpart;

if ($inputhour < 10)
  $firstpart = ' 0'.$inputhour;
else
  $firstpart = ' '.$inputhour;

if ($inputminute < 10)
  $secondpart = ':0'.$inputminute;
else
  $secondpart = ':'.$inputminute;

if ($inputsecond < 10)
  $thirdpart = ':0'.$inputsecond;
else
  $thirdpart = ':'.$inputsecond;

return $fulldatetime.$firstpart.$secondpart.$thirdpart;

} /* CreateDateTimeForSQL */

/******************************/
/* Subtract13Years                                      */
/* subtract 13 years form a date                  */
/* called from newregistration.php               */
/******************************/
function Subtract13Years($inputdate)
{
  // subtract 13 years from a valid date

  $tempdate = substr($inputdate,0,4);

  $newdate = $tempdate - 13;

  $newdate = $newdate.substr($inputdate,4,6);

  return $newdate;

} /* Subtract13Years */

/******************************/
/* ValidEmail                                                 */
/* called from newregistration.php                */
/******************************/
function ValidEmail($address)
{
  // check an email address is possibly valid
  if (preg_match('/^[a-zA-Z0-9_\.\-]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-\.]+$/', $address))
    return true;
  else 
    return false;
} /* END ValidEmail */

?>

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