Untitled

<!DOCTYPE html>
<html>
<head>
    <title>form validator</title>
</head>
<body>
<?php
global $formData;
$requestMethod = $_SERVER['REQUEST_METHOD'];

class formValidator {
    public $empty;

    private $currentRules;
    public  $fieldName;
    public  $fieldValue;
    private $formFieldName;
    private $formFieldValue;
    private $badVars;
    private $countOfBadVars;
    private static $errorReport;
    private $errorsCount;

    function __construct(){
        $this->activateListOfBadVars();
    }

    public function acceptRules($rules){
        $this->currentRules = $rules;

        if(!empty($this->currentRules) || !empty($rules)){
            $this->verifyFields();
        } else {
            $this->prepareErrorReport('there no rules to check fields with');
        }

    }

    public function prepareErrorReport($errorMessage, $fromCase='', $dataType=''){
        self::$errorReport[] = $errorMessage . "<br />";
        $this->errorsCount = count(self::$errorReport);

    }

    protected function activateListOfBadVars(){
        $variableList[] = 'submit_button';
        $this->countOfBadVars = count($variableList);
        $this->badVars = $variableList;

        for ($i = 0; $i < ($this->countOfBadVars); $i++){
            unset($_POST[$this->badVars[$i]]);
        }

    }

    private function trimmer($field, $value){
        $this->formFieldName[] = $this->fieldName  = strip_tags(trim($field));
        $this->formFieldValue[] = $this->fieldValue = strip_tags(trim($value));

    }

    private function inputChecker($pattern, $dataType, $errorMessage){
        if (!empty($this->fieldValue)) {
            $currentCountOfErrors = 0;

            foreach ($pattern as $currentPattern) {
                if (substr_count(($this->fieldValue), $currentPattern) > 0) {
                    ++$currentCountOfErrors;
                }
            }

            if ($currentCountOfErrors > 0) {
                $this->prepareErrorReport($errorMessage . " in $dataType field ", 'onlychars', $dataType);
            }
        }

    }

    private function verifyFields(){
        foreach ($_POST as $POSTfieldName => $POSTfieldValue) {
            $this->trimmer($POSTfieldName, $POSTfieldValue);
            $dataType = str_replace('_field', '', $this->fieldName);

            if (array_key_exists($dataType, $this->currentRules)) {
                foreach($this->currentRules[$dataType] as $currentRule => $errorMessage) {
                    switch($currentRule){
                        case 'required':
                            if (empty($this->fieldValue)) {
                            $this->prepareErrorReport($errorMessage, 'required', $dataType);
                            }
                        break;

                        case 'maxlength':
                            if (strlen($this->fieldValue) > 32) {
                            $this->prepareErrorReport($errorMessage, 'maxlength', $dataType);
                        }
                        break;

                        case 'onlychars':
                            $pattern = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 0, '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', '-', '=', '|', '?', '±', '~', '`', "'", '[', ']', ';', '\\', '/', '<', ',', ".");
                            $this->inputChecker($pattern, $dataType, $errorMessage);
                        break;

                        case 'onlynumbers':
                            $pattern = array('q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', 'z', 'x', 'c', 'v', 'b', 'n',  'm', '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '=', '|', '?', '±', '~', '`', "'", '[', ']', ';', '\\', '/', '<', ',', ".");
                            $this->inputChecker($pattern, $dataType, $errorMessage);
                        break;

                        case 'specchar':
                            $pattern = array('!', '#', '$', '%', '^', '&', '*', '(', ')', '_', '=', '|', '?', '±', '~', '`', "'", '[', ']', ';', '\\', '/', '<', ',');

                            if (!empty($this->fieldValue)) {
                            $currentCountOfErrors = 0;
                            foreach ($pattern as $currentPattern) {
                                if ((substr_count(($this->fieldValue), $currentPattern) > 0) || (substr_count(($this->fieldValue), '@') > 1) || (substr_count(($this->fieldValue), '@') <= 0) || (substr_count(($this->fieldValue), '.') < 1)) {
                                    ++$currentCountOfErrors;
                                }
                            }

                                if ($currentCountOfErrors > 0) {
                                    $this->prepareErrorReport($errorMessage . " in $dataType field ", 'onlychars', $dataType);
                                }
                        }
                        break;
                    }
                }

            }
        }

    if(!in_array($_POST['sex_listbox'], array('male', 'female', 'select your sex'))) {
        $this->prepareErrorReport('there something wrong with your sex');
    }

    if (in_array($_POST['sex_listbox'], array('select your sex'))){
        $this->prepareErrorReport('select your sex');
    }

    }

    public function displayAllErrors(){
        for ($i = 0; $i < ($this->errorsCount); $i++){
            echo self::$errorReport[$i];
        }

    }

    public function takeOutSomeVars(){
        global $formData;
        $formKey = $this->formFieldName;
        $formValue = $this->formFieldValue;
        $formData = array_combine($formKey, $formValue);

    }

}

if ($requestMethod == 'POST') {
    $emptyRules = '';
    $rules = array(
        'name' => array(
            'required'   => 'name is required field',
            'maxlength'  => 'max length must be 32',
            'onlychars'  => 'only characters [A-Z][a-z] are available to input'
        ),
        'surname' => array(
            'required'   => 'surname is required field',
            'maxlength'  => 'max length must be 32',
            'onlychars'  => 'only characters [A-Z][a-z] are available to input'
        ),
        'email' => array(
            'required'   => 'email is required field',
            'maxlength'  => 'max length must be 32',
            'specchar'   => 'there problems with your entered email (be sure you entered it like: info@site.com)'
        ),
        'telephone' => array(
            'required'    => 'telephone is required field',
            'maxlength'   => 'max length must be 12',
            'onlynumbers' => 'only [+, -] sign and numbers [0-9] are available to input'
        )
    );

    $newValidator = new formValidator();
    $newValidator->acceptRules($rules);
    $newValidator->displayAllErrors();
    $newValidator->takeOutSomeVars();

}

#EMPTY

?>
<form action="" method="POST" name="validator_form">
    <table name="validator_table">
        <tr>
            <td>
                <input type="text" name="name_field" maxlength="32" value="<?php echo !empty($formData['name_field']) ? $formData['name_field'] : ''; ?>" />
            </td>
            <td>
                : Name field
            </td>
        </tr>
        <tr>
            <td>
                <input type="text" name="surname_field" maxlength="32" value="<?php echo !empty($formData['surname_field']) ? $formData['surname_field'] : ''; ?>" />
            <td>
                : Surname field
            </td>
        </tr>
        <tr>
            <td>
                <input type="text" name="email_field" maxlength="32" value="<?php echo !empty($formData['email_field']) ? $formData['email_field'] : ''; ?>" />
            </td>
            <td>
                : E-mail field
            </td>
        </tr>
        <tr>
            <td>
                <input type="text" name="telephone_field" maxlength="12" value="<?php echo !empty($formData['telephone_field']) ? $formData['telephone_field'] : ''; ?>" />
            </td>
            <td>
                : Telephone field
            </td>
        </tr>
        <tr>
            <td>
            <select name="sex_listbox">
                <option value="select your sex" <?php echo isset($formData['sex_listbox']) && $formData['sex_listbox'] == 'select your sex'    ? 'selected' : '' ?>>select your sex</option>
                <option value="male"   <?php echo isset($formData['sex_listbox']) && $formData['sex_listbox'] == 'male'   ? 'selected' : '' ?>>male</option>
                <option value="female" <?php echo isset($formData['sex_listbox']) && $formData['sex_listbox'] == 'female' ? 'selected' : '' ?>>female</option>
                <option value="ufo"    <?php echo isset($formData['sex_listbox']) && $formData['sex_listbox'] == 'ufo'    ? 'selected' : '' ?>>ufo</option>
            </select>
            </td>
        </tr>
        <tr>
            <td>
                <input type="submit" name="submit_button" value="submit" />
            </td>
        </tr>
    </table>
</form>
</body>
</html>
<?php

# EMPTY

?>