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<?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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