<?php
/**
* Validation class
* Contains a number of validation methods to keep validation to one class
* When using, (i.e. varEmpty), you would need to check for the return being null to pass validation, i.e.
* if($validate->varEmpty($var, 'key name') == null):
* // validation passed. do something.
* else:
* // do something else
* endif;
* @author Pete Robinson - www.pete-robinson.co.uk
*/
class Validate
{
public $errors = array();
/**
* Check that a numeric value falls between two other numberic values
* @param $min - int - the minimum value that $value must be
* @param $max - int - the maximum value that $value must be
* @param $value - the value to be checked
* @param $key - str - the variable name to be presented to the user in error report
*/
public function between($min, $max, $value, $key='')
{
if($value < $min || $value > $max) {
$this->errors[] = $key . ' must be between ' . $min . ' and ' . $max . '.';
return false;
}
}
/**
* Check to see if a variable holds data
* @param $value - the variable to be validated
* @param $key - str - the variable name to be presented to the user in error report
*/
public function varEmpty($value, $key='')
{
if(!$value || $value == '' || empty($value)) {
$this->errors[] = $key . ' must have a value.';
return false;
}
}
/**
* Check that an email address follows a valid email address format
* @param $value - str - the email address to be validated
* @param $key - str - the variable name to be presented to the user in error report
*/
public function email($value, $key='')
{
if(!preg_match('/^[A-Z0-9._-]+@[A-Z0-9][A-Z0-9.-]{0,61}[A-Z0-9]\.[A-Z.]{2,6}$/i', $value)) {
$this->errors[] = $key . ' must be a valid e-mail address.';
return false;
}
}
/**
* Compare two values
* @param $value1 - str - the first value
* @param $value2 - str - the second value. Must match $value1 to pass validation
* @param $key1 - str - the variable name to be presented to the user in error report
* @param $key2 - str - the variable name to be presented to the user in error report
*/
public function equal($value1, $value2, $key1='', $key2='')
{
if($value1 != $value2) {
$this->errors[] = $key1 . ' must be equal to ' . $key2 . '.';
return false;
}
}
/**
* Check whether a value is numeric
* @param $value - the number to be validated
* @param $key - str - the variable name to be presented to the user in error report
*/
public function num($value, $key='')
{
if(!ereg('^[[:digit:]]+$', $value)) {
if($key) {
$this->errors[] = $key . ' must be a numeric value.';
}
return false;
}
}
/**
* Compare a list of required fields against an array
* @param $required - arr - the array of keys
* @param $fields - arr - the array of values
*/
public function requiredFields($required, $fields)
{
$results = array();
$i = 0;
foreach($required as $req) {
if($this->varEmpty($fields[$req], $req) === false) {
$results[$i] = $req;
$i++;
}
}
if($results) {
return false;
}
}
/**
* Check to see if an array holds one or more keys
* @param $arr - arr - the array to be validated
* @param $key - str - the variable name to be presented to the user in error report
*/
public function arrayData($arr, $key='')
{
if(count($arr) == 0 || !is_array($arr)) {
$this->errors[] = $key . ' must be an array.';
return false;
}
}
/**
* Check to see if a value is alphanumeric
* @param $value - str - the value to be validated
* @param $key - str - the variable name to be presented to the user in error report
*/
public function alphaNum($value, $key='')
{
if(!preg_match('/^[a-zA-Z0-9]+$/', $value)) {
$this->errors[] = $key . ' must be an alpha-numeric value.';
return false;
}
}
/**
* Check whether a given value is a valid credit card number.
* @param $number - int - the 16 digit credit card number
* @param $key - str - the variable name to be presented to the user in error report
*/
public function creditCardNo($number, $key='')
{
if(strlen($number) != 16) {
$this->errors[] = $key . ' is not a valid credit card number.';
return false;
} else {
if($this->num($number) === false) {
$this->errors[] = $key . ' is not a valid credit card number.';
return false;
}
}
}
/**
* Check to ensure that a credit card start date is in the past
* @param $month - int - the 2 digit month to be validated (i.e. 02)
* @param $year - int - the 2 digit year to be validated (i.e. 09)
* @param $key - str - the variable name to be presented to the user in error report
*/
public function creditCardStart($month, $year, $key='')
{
if($this->num($month) == null && $this->num($year) == null) {
if($this->pastDate(($year+2000) . '-' . $month . '-01') === false) {
$this->errors[] = $key . ' must be in the past.';
return false;
}
} else {
$this->errors[] = 'Month and year must be in numeric format.';
return false;
}
}
/**
* Check to ensure that a credit card expiry date is in the future
* @param $month - int - the 2 digit month to be validated (i.e. 02)
* @param $year - int - the 2 digit year to be validated (i.e. 09)
* @param $key - str - the variable name to be presented to the user in error report
*/
public function creditCardExpire($month, $year, $key='')
{
if($this->num($month) == null && $this->num($year) == null) {
if($this->futureDate(($year + 2000) . '-' . $month . '-' . cal_days_in_month(CAL_GREGORIAN, $month, ($year + 2000))) === false) {
$this->errors[] = $key . ' must be a date in the future.';
return false;
}
} else {
$this->errors[] = 'Month and year must be in numeric format';
return false;
}
}
/**
* Ensure a date (in Y-m-d format) is in the past
* @param $value - str - the date to be checked
* @param $key - str - the variable name to be presented to the user in error report
*/
public function pastDate($value, $key='')
{
if($value > date('Y-m-d')) {
if($key) {
$this->errors[] = $key . ' must be a date in the past.';
}
return false;
}
}
/**
* Ensure that a date (Y-m-d format) is in the future
* @param $value - str - the date to be validated
* @param $key - str - the variable name to be presented to the user in error report
*/
public function futureDate($value, $key='')
{
if($value < date('Y-m-d')) {
if($key) {
$this->errors[] = $key . ' must be in the past.';
}
return false;
}
}
/**
* Check that a date falls between two other dates
* @param $date - str - the subject of the method
* @param $from - str - the lower limit of the date range
* @param $to - str - the upper limit of the date range
* @param $key - str - the variable name to be presented to the user in error report
*/
public function dateBetween($date, $from, $to, $key='')
{
if(($date < $from) || ($date > $to)) {
if($key) {
$this->errors[] = $key . ' must be between ' . $from . ' and ' . $to . '.';
}
return false;
}
}
/**
* Check that a file is in a valid document format (PDF, DOC, DOCX, XSL, XLSX)
* And that is has a max size of 10MB and has no errors
* Add your own mime types to the array if needed
* @param $file - arr - the $_FILES array of the file
*/
public function validateFile($file)
{
if($file['size'] >= 102400000) {
$this->errors[] = 'File must be smaller than 10MB';
return false;
}
if(!in_array($file['type'], array('application/pdf', 'application/msword', 'application/vnd.ms-excel', 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'))) {
$this->errors[] = 'File must be in pdf, doc, xls, docx or xlsx format.';
return false;
}
if($file['error'] > 0) {
$this->errors[] = 'Error in uploaded file.';
return false;
}
}
}
?>
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