php中的输入验证

我已经在codeigniter执行验证中完成了这项工作。如何在php本机中执行类似的工作？我的意思是验证

您可以通过php变量访问发布的表单值。然后，您需要用php编写执行不同验证的函数：-

• 必需：这很简单，只需检查值是否不是空字符串
• 修剪：有一个
• 有效电子邮件：您需要使用

这些应该会让你开始，在接下来的时间里或者一个月里

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希望这有帮助

我过去的做法是为它构建对象。。。表单对象、表单字段对象和表单字段验证程序对象

因此，您需要创建所有字段对象，如果需要，将验证器附加到这些对象上，然后将整个批次附加到表单上-因此您最终会得到如下结果：

public function registration()
    {
    $this->load->library('form_validation');
    // field name, error message, validation rules
    $this->form_validation->set_rules('user_name', 'User Name', 'trim|required|min_length[4]|xss_clean');
    $this->form_validation->set_rules('email_address', 'Your Email', 'trim|required|valid_email');`enter code here`
    $this->form_validation->set_rules('password', 'Password', 'trim|required|min_length[4]|max_length[32]');
    $this->form_validation->set_rules('con_password', 'Password Confirmation', 'trim|required|matches[password]');
        }

new Validator(Validator::TYPE_EMAIL); //basic email validator
new Validator(Validator::TYPE_EMAIL_WITH_MX); //email validator with getmxrr()
new Validator(Validator::TYPE_REGEXP, '/^[\w]+$/'); //generic regular expression with the pattern to match as the second parameter
new Validator(Validator::TYPE_INT_MIN, 10); //integer with a minimum value of 10
new Validator(Validator::TYPE_REGEXP, '/^[\w\s]*$/', true); //the third parameter could be an override so that the validation is optional - if the field has a value it MUST validate, if it doesn't have a value, it's fine

验证器处理的事情包括确定字段数据是否是必需的，如果数据与空字符串（RegExp）匹配，那么它就不是必需的

但它们也可以处理电子邮件验证（有或没有getmxrr（）查找）或其他任何事情，您只需为特定情况构建验证程序类型。。。或者您有通用验证器：

$oFieldUsername = new FormField('username', new Validator(Validator::TYPE_EMAIL));
$oFieldPassword = new FormField('password', new Validator(Validator::TYPE_PASSWORD));

$oForm = new Form(Form::METHOD_POST, '/path/to/action.php');
$oForm->attachField($oFieldUsername);
$oForm->attachField($oFieldPassword);

//form has not been posted
if(!$oForm->isReceived()) {
  $oForm->render('/path/to/view.tpl.php');
}

//the form HAS been posted but IS NOT VALID
elseif(!$oForm->isValid()) {
  $oForm->render('/path/to/view.tpl.php');
}

//the form HAS been posted and the data LOOKS valid
else {
  //do processing and hand-off
}

这为您提供了验证所需的最大灵活性。

Form:：isValid（）

方法所做的就是遍历所有附加的字段，检查它们是否有验证器，如果有，那么

Validator:：isValid（）

方法是否返回true

您还可以将多个验证器附加到具有以下内容的字段：

public function registration()
    {
    $this->load->library('form_validation');
    // field name, error message, validation rules
    $this->form_validation->set_rules('user_name', 'User Name', 'trim|required|min_length[4]|xss_clean');
    $this->form_validation->set_rules('email_address', 'Your Email', 'trim|required|valid_email');`enter code here`
    $this->form_validation->set_rules('password', 'Password', 'trim|required|min_length[4]|max_length[32]');
    $this->form_validation->set_rules('con_password', 'Password Confirmation', 'trim|required|matches[password]');
        }

new Validator(Validator::TYPE_EMAIL); //basic email validator
new Validator(Validator::TYPE_EMAIL_WITH_MX); //email validator with getmxrr()
new Validator(Validator::TYPE_REGEXP, '/^[\w]+$/'); //generic regular expression with the pattern to match as the second parameter
new Validator(Validator::TYPE_INT_MIN, 10); //integer with a minimum value of 10
new Validator(Validator::TYPE_REGEXP, '/^[\w\s]*$/', true); //the third parameter could be an override so that the validation is optional - if the field has a value it MUST validate, if it doesn't have a value, it's fine

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。。。无论如何，我就是这样做的。

您可以查看form_验证库来了解，CodeIgniter是如何使用代码实现这一点的，我不确定您希望在“php本机”中找到什么。php中没有表单（您可以创建一个生成HTML表单的php文件，但没有表示表单afaik的本机对象）。