* Class to validate user input
A simple wrapper class for various validating techniques. uses regrex, ctype, date and string
functions to get to a simple TRUE/FALSE answer. Class can be called without instantiation. Access with the CLASS::METHOD syntax.
Example: if(!Validate::isAlNumUnder($user))<?php // vim: expandtab sw=4 ts=4 fdm=marker
/**
* Class to validate user input
* A simple wrapper class for various validating techniques. uses regrex, ctype, date and string
* functions to get to a simple TRUE/FALSE answer. Class can be called without instantiation.
* Access with the CLASS::METHOD syntax.
*
* Example of usage:
* // check to make sure the username fits the rules
* if(!Validate::isAlNumUnder($user) || !Validate::isNotEmpty($user) || !Validate::validLength($user, 45))
*
*
* The following work is licensed under a Creative Commons
* Attribution-NonCommercial 2.5 License. For more
* information on this license go to http://creativecommons.org/licenses/by-nc/2.5/
*/
class Validate
{
/* {{{isNotEmpty */
/**
* Method to see if a value has been entered. The following are considered to be empty:
*
* "" (an empty string)
* 0 (0 as an integer)
* "0" (0 as a string) <--- Please note for when dealing with forms
* NULL
* FALSE
* array() (an empty array)
* var $var; (a variable declared, but without a value in a class)
*/
function isNotEmpty($input)
{
return !empty($input);
}
/* }}}isNotEmpty */
/* {{{isAlpha */
/**
* Method to check for all ASCII alphabetic characters (a-z A-Z). Blank
* spaces and underscores are not allowed.
*/
function isAlpha($input)
{
return ctype_alpha($input);
}
/* }}}isAlpha */
/* {{{isAlphaNum */
/**
* Method to check for alpha-numeric characters only (a-z A-Z 0-9). Blank
* spaces and underscores are not allowed.
*/
function isAlphaNum($input)
{
return ctype_alnum($input);
}
/* }}}isAlphaNum */
/* {{{isAlNumUnder */
/**
* Method to check for alpha-numeric and underscore characters. Blank spaces
* aren't allowed.
*/
function isAlNumUnder($input)
{
return preg_match('/^[a-zA-Z0-9_]+$/', $input)?TRUE:FALSE;
}
/* }}}isAlNumUnder */
/* {{{isInteger */
/**
* Method to check for Integer characters (whole numbers only).
*/
function isInteger($input)
{
return preg_match('/^[0-9]+$/',$input)?TRUE:FALSE;
}
/* }}}isInteger */
/* {{{isFloat */
/**
* Method to check for a float value (decimal). Scientific notation is not
* supported. A decimal point is required. See isInteger() if the decimal
* is left out.
*/
function isFloat($input)
{
return preg_match('/^[0-9]{1,10}[.][0-9]{1,10}$/', $input)?TRUE:FALSE;
}
/* }}}isFloat */
/* {{{validTimestamp */
/**
* Method to make sure a timestamp is a valid date.
*/
function validTimestamp($input)
{
return checkdate(date('n',$input), date('j', $input), date('Y', $input));
}
/* }}}validTimestamp */
/* {{{validEmail */
/**
* Method to validate an email address. regrex pattern taken from regexlib.com
* (http://www.regexlib.com/Default.aspx) submitted there by Myle Ott. allows
* both IP addresses and regular domains.
*/
function validEmail($input)
{
$pattern = '^([a-zA-Z0-9_\-])+(\.([a-zA-Z0-9_\-])+)*@((\[(((([0-1])?([0-9])?[0-9])|(2[0-4][0-9])|(2[0-5][0-5])))\.(((([0-1])?([0-9])?[0-9])|(2[0-4][0-9])|(2[0-5][0-5])))\.(((([0-1])?([0-9])?[0-9])|(2[0-4][0-9])|(2[0-5][0-5])))\.(((([0-1])?([0-9])?[0-9])|(2[0-4][0-9])|(2[0-5][0-5]))\]))|((([a-zA-Z0-9])+(([\-])+([a-zA-Z0-9])+)*\.)+([a-zA-Z])+(([\-])+([a-zA-Z0-9])+)*))$';
return preg_match( $pattern, $input)?TRUE:FALSE;
}
/* }}}validEmail */
/* {{{validUrl */
/**
* Method to validate a full URL. Regex pattern copied from regrexlib.com
* (http://www.regexlib.com/Default.aspx) no attribution was given for the
* author. Iit will NOT match a valid URL ending with a dot or bracket
*/
function validUrl($input)
{
$pattern = '^(http|https|ftp)\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\'/\\\+&%\$#\=~])*[^\.\,\)\(\s]$';
return preg_match($pattern,$input)?TRUE:FALSE;
}
/* }}}validUrl */
/* {{{validUSPhone */
/**
* Method to validate a US phone number. regex pattern taken off of
* the PHP manual user comments for preg_match. Author is unknown.
* Valid formats:
*
* (Xxx) Xxx-Xxxx
* (Xxx) Xxx Xxxx
* Xxx Xxx Xxxx
* Xxx-Xxx-Xxxx
* XxxXxxXxxx
* Xxx.Xxx.Xxxx
*
*/
function validUSPhone($input)
{
return preg_match("/^(\(|){1}[2-9][0-9]{2}(\)|){1}([\.- ]|)[2-9][0-9]{2}([\.- ]|)[0-9]{4}$/", $input)?TRUE:FALSE;
}
/* }}}validUSPhone */
/* {{{validDate */
/**
* Method to validate the combination of month, day and year. Leap
* year is taken into account.
*/
function validDate($month, $day, $year)
{
if(trim($month)>12 || trim($day)>31 || strlen(trim($year)) != 4)
{
return FALSE;
}
return checkdate($month, $day, $year);
}
/* }}}validDate */
/* {{{validLength */
/**
* Method to validate the length of the string is less then the
* maximum length.
*/
function validLength($input, $max)
{
return (strlen($input) <= $max);
}
/* }}}validLength */
}
?>
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