FoundPHP Validate Form Data

表单验证是在开发中非常重要的环节，FoundPHP提供非常简单的验证方式

English

### FoundPHP Form Validation
 Form verification is a very important part of development. FoundPHP provides a very simple verification method. Set the table name and field data before the program starts. When the form is submitted, use the `post_data` method to verify the data.

#### 1.Set Table Name
```php
<?php
	$table['a'] 	= 'user';
```

#### 2. Set the Verification Array
The information to verify the array settings has the following information.

|  Subscript | Is it necessary | Description | Usage |
| -------| -------| ------ | ------ |
| lang | Yes | error prompt content | lang('Error prompt content [Search display content]') |
| ope | Yes |data processing method | PHP character processing methods such as trim, intval, floatvavl, strtotime|
| code | No |encryption processing | md5 base64 encryption, often used for password encryption|
| long | No | character limit length | 5,10 means that the character length is between 5 and 10 digits |
| check | No | character Judgment | Judge the characters processed by ope, see the Check usage table for specific usage |
| t | Yes | output in the corresponding function | To output in the add function, do not output in the edit:'t'=>'add'|
| req | No | must fill in the corresponding function | If it is required to add a function, it is not necessary to fill in the edit:'req'=>'add'|
| query | No | check whether the data in this field exists, like fuzzy search | To check:'query'=>'1'|
| search | No | automatically create a search box | Search:'search'=>'1'|
---
##### Array Verification Check Usage

|  Usage | Description |
| ------ | ------ |
| =='' | validation when the character is equal to empty |
| !='' | verification when the character is not equal to empty |
| =='' && variable =='' | verification when the character is equal to empty and the variable is equal to empty (can continue to increase and or judge) |
| id | ID number verification |
| mobile | mobile phone number verification |
| mail | email verification |
| bank | bank card verification|

---
#### 3.The Method of Using Post_data. 
After setting the validation array, use the `post_data` method to verify when the form is submitted.
```php
	//please drop down to see the example for the complete code
	$post	= post_data($table['a'],$insert);
```
`post_data`The output of the method contains two arrays `data` and `check`

`data`The output of the array is the verified data information, which can be directly inserted into the database using the dbo method.

`check`The output of the array is the data information that needs to be verified with the database. When inserting the database using the dbo method, if there is duplicate data, no new data will be inserted.

##### Complete Code Example
```php
<?php
$table['a'] 	= 'user';
$insert[$table[‘a’]]	= array(
	'username'	=> array(
			'lang'		=> lang('please enter[user name]'),
			'ope'		=>'trim'，
			'check'		=> '==""',
			't'			=> 'add,edit',
			'req'		=>'add'，
			'query'		=>'1'，
			'search'	=> '1'
	)，
	'password'	=> array(
			'lang'		=> lang('please enter[user password]'),
			'ope'		=>'trim'，
			'code'		=> 'md5'，
			'long'		=> '0,20',
			'check'		=> '==""',
			't'			=> 'add,edit',
			'req'		=>'add'，
			'query'		=>'1'，
			'search'	=> '1'
	)，
);
switch($t){
	//edit
	case'edit':
		if($P['o']){
			//use the post_data method to validate form data
			$post	= post_data($table['a'],$insert);
			//edit data
			sql_update_insert(array('table'=>$table['a'],'data'=>$post['data'],'where'=>'condition'));
		}
	break;
	
	//add to
	case'add':
		if($P['o']){
			//use the post_data method to validate form data
			$post	= post_data($table['a'],$insert);
			//adding data
			sql_update_insert(array('table'=>$table['a'],'data'=>$post['data'],'check'=>$post['check']));
		}
	break;
	
	//list
	default:
}
```