Implementation method of form data submission and verification developed in PHP in WeChat mini program

With the popularity and application of WeChat mini programs, more and more developers are beginning to use WeChat mini programs to implement various functions and services. In implementing some simple functions, form data submission and verification are very common requirements. This article will introduce the implementation method of form data submission and verification developed in PHP in WeChat applet to help developers better realize business needs.

1. Form data submission

Form data submission means that after the user completes filling in the form, the form data is transmitted to the server for saving or other processing. You can use wx.request() to submit data in WeChat applet.

The following is a simple form submission implementation code:

// 表单数据
var formData = {
  name: '张三',
  age: '18',
  gender: '男',
  phone: '13888888888'
};

// 提交表单数据
wx.request({
  url: 'https://yourdomain.com/form.php',
  data: formData,
  method: 'POST',
  header: {
    "Content-Type": "application/x-www-form-urlencoded"
  },
  success: function(res) {
    console.log(res.data);
  },
  fail: function(res) {
    console.log(res.errMsg);
  }
})

In the above code, formData contains each field and corresponding value of the form, url is the target address of form data submission, method is the submission method, header is the request header for submitting data, success and fail are the callback functions for success and failure respectively.

It should be noted that when submitting form data, the format of the data needs to be processed. For example, the "Content-Type" in the sample code is "application/x-www-form-urlencoded", you can also use " application/json" etc.

2. Form data verification

Form data verification is to ensure that the data submitted by the form meets expectations and requirements to ensure the validity and security of the data. In WeChat applet, you can use PHP for form data verification. The following is a simple form validation implementation code:

// 表单数据
$formData = array(
    'name' => $_POST['name'],
    'age' => $_POST['age'],
    'gender' => $_POST['gender'],
    'phone' => $_POST['phone']
);

// 验证表单数据
foreach($formData as $key => $value) {
    switch($key) {
        case 'name':
            if(empty($value)) {
                // 如果姓名为空
                exit('姓名不能为空！');
            }
            break;
        case 'age':
            if(!is_numeric($value)) {
                // 如果年龄不是数字
                exit('年龄必须为数字！');
            }
            if($value < 18 || $value > 60) {
                // 如果年龄不在18~60岁之间
                exit('年龄必须在18~60岁之间！');
            }
            break;
        case 'gender':
            if(empty($value)) {
                // 如果性别为空
                exit('性别不能为空！');
            }
            break;
        case 'phone':
            if(!preg_match("/^1[34578]d{9}$/", $value)) {
                // 如果手机号码格式不正确
                exit('手机号码格式不正确！');
            }
            break;
    }
}

In the above code, $formData is the submitted form data, and all form fields are traversed through foreach, and specific verification operations are performed on each field.

It should be noted that the verification method of form data should be written according to actual needs. For example, data validation can be achieved through validation functions or regular expressions.

Summary

The above is the implementation method of form data submission and verification developed in PHP in WeChat applet. By using PHP for data verification and submission, the validity and security of data submitted in the form can be guaranteed, and the user experience and data reliability can be improved. It is worth noting that the content described in this article is only basic knowledge, and developers can expand and improve it according to project needs.

The above is the detailed content of Implementation method of form data submission and verification developed in PHP in WeChat mini program. For more information, please follow other related articles on the PHP Chinese website!