Ashuwp invitaion code - invitation code generator

Ashuwp_Invitation_Code is a wordpress plug-in that helps add invitation codes to your website. WordPress users can also create a paid reading website with some log restriction access codes.

To use this plug-in, you need to enable the registration function of wordpress.

• Plug in introduction: details

Code version

• Original reference: details

Pure code implementation invitation code 😎 Ideas:

1. You need to create a new data table to save the invitation code.
2. The background needs two pages: invitation code list and add invitation code.
3. When you add an invitation code, you need to be able to set a prefix, generate multiple invitation codes at a time, customize the length of the invitation code, and set the number of times each invitation code is used.

data sheet

Code: invitation code, max: number of times the invitation code is used, users: all users using this verification code, status: whether the verification code is available.

Database operation

The database operation code includes: 1 Establish database. 2. Data acquisition, addition, deletion, change and other operations.

 <? php //Executed the first time the theme is enabled function ashuwp_load_theme() { global $pagenow; if ( is_admin() && 'themes.php' == $pagenow && isset( $_GET['activated'] ) ){ ashuwp_invitation_code_install(); } } add_action( 'load-themes.php', 'ashuwp_load_theme' ); //Create data table function ashuwp_invitation_code_install(){ global $wpdb; $table_name = $wpdb->prefix . ' invitation_code'; if( $wpdb->get_var("SHOW TABLES LIKE '$table_name'") != $ table_name ) : $sql = " CREATE TABLE `".$ wpdb->prefix. "invitation_code` ( `id` BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY , `code` varchar(40), `max` INT NOT NULL, `users` varchar(20), `status` tinyint ) ENGINE = MYISAM DEFAULT CHARSET=utf8; "; require_once(ABSPATH . 'wp-admin/includes/upgrade.php'); dbDelta($sql); endif; } //Insert Data function ashuwp_insert_invitation_code( $code, $max = 1, $users, $status){ global $wpdb; if($code==''){ return false; } $code = trim($code); $code_exists = ashuwp_check_invitation_code($code); if(!$code_exists){ $insert = "insert into ".$ wpdb->prefix. "invitation_code (code,max,users,status) values( '$code', '$max', '','1')"; $wpdb->query($insert); return true; }else{ return false; } } //Check whether the invitation code already exists function ashuwp_check_invitation_code( $code ){ global $wpdb; $sql = "select * from ".$ wpdb->prefix. "invitation_code where code='$code'"; $result = $wpdb->get_results($sql); if(!empty($result)){ return true; }else{ return false; } } //Get invitation code function ashuwp_get_invitation_code($per_page=50, $page=1){ global $wpdb; $page = (int)$page; $per_page = (int)$per_page; if(!$page){ $page = 1; } if(!$per_page){ $per_page = 50; } $begin = $per_page*($page-1); $end = $per_page*$page; $sql = "select * from ".$ wpdb->prefix. "invitation_code limit $begin,$end"; $results = $wpdb->get_results($sql,'ARRAY_A'); return $results; } //Delete, enable and disable invitation codes. function ashuwp_operation_invitation_code( $id, $action ){ global $wpdb; $id = (int)$id; if(!$id){ return false; } if(!in_array($action,array('delete','deactive','active'))){ return false; } if($action =='delete'){ $sql = "delete from ".$ wpdb->prefix . "invitation_code where id='$id'"; } if($action =='deactive'){ $sql = "update ".$ wpdb->prefix . "invitation_code set status=0 where id='$id'"; } if($action =='active'){ $sql = "update ".$ wpdb->prefix . "invitation_code set status=1 where id='$id'"; } $result = $wpdb->query($sql); if($result){ return true; }else{ return false; } }

Website background
The background code of the website includes: 1 Invitation code list page. 2. Add invitation code page.

 <? php class ashuwp_invitation_code_admin { static public $instance; public function __construct(){ add_action( 'admin_menu', array(&$this, 'ashuwp_invitation_code_menu') ); } function ashuwp_invitation_code_menu(){ Add_menu_page ('invite code ','invite code','manage_options','inventition_code ', array (&$this,'inventition_code_list'), '', 27); Add_submenu_page ('invitation_code', 'add invitation code', 'add invitation code', 'manage_options',' invitation_code_add ', array (&$this,' invitation_code_add ')); } function invitation_code_list(){ if( isset($_GET['code_action']) && in_array($_GET['code_action'],array('delete','deactive','active')) && isset($_GET['code_id']) ){ $code_id = (int)$_GET['code_id']; if(!$code_id){ return; } $result = ashuwp_operation_invitation_code( $code_id, $_GET['code_action'] ); } $code_lists = ashuwp_get_invitation_code(999,1); ?> <div class="wrap"> <h1 class="wp heading inline">Invitation code</h1> <a href="<? Php echo admin_url ('admin. php? Page=invitation_code_add ');?>" class="page title action">Add</a> <hr class="wp-header-end"> <? php if(isset($result)){ if($result){ ?> <div id="message" class="notice notice success">The operation is successful</ div> <? php }else{ ?> <div id="message" class="notice notice error">The operation failed</ div> <? php } } ?> <ul class="subsub"><li class="all">All<span class="count">(<? Php echo count ($code_lists);?>)</ span></ul> <table class="wp-list-table widefat fixed"> <thead> <tr> <th scope="col">ID</th> <th scope="col">Invitation code</th> <th scope="col">Statistics (maximum usage/used)</th> <th scope="col">Users</th> <th scope="col">Operation</th> </tr> </thead> <tbody> <? php if($code_lists){ foreach($code_lists as $code){ $users = array(); if(!empty($code['users'])){ $users = explode( ',', $code['users'] ); } $used = count($users); ?> <tr> <td><? php echo $code['id']; ?></ td> <td> <? php echo $code['code']; ?> <? php if(empty($code['status']) || !$ code['status']){ Echo '- Disabled'; } ?> </td> <td> <? php echo $code['max'].'/'.$ used; ?> </td> <td> <? php foreach( $users as $user_id ){ $user = get_user_by('id', $user_id); if(!empty($user)){ ?> <a href="<?php echo admin_url( 'user-edit.php?user_id='.$user->ID ); ?>"><? php echo $user->user_login; ?></ a>, <? php } } ?> </td> <td> <a href="<? Php echo admin_url ('admin. php? Page=invitation_code&code_action=delete&code_id='. $code ['id']);?>">Delete</a> <? php if(empty($code['status']) || !$ code['status']){ ?> <a href="<? Php echo admin_url ('admin. php? Page=invitation_code&code_action=active&code_id='. $code ['id']);?>">Enable</a> <? php }else{ ?> <a href="<? Php echo admin_url ('admin. php? Page=invitation_code&code_action=inactive&code_id='. $code ['id']);?>">Disable</a> <? php } ?> </td> </tr> <? php } } ?> </tbody> <tfoot> <tr> <th scope="col">ID</th> <th scope="col">Invitation code</th> <th scope="col">Statistics</th> <th scope="col">Users</th> <th scope="col">Operation</th> </tr> </tfoot> </table> <div class="tablenav bottom"> <div class="tablenav-pages"> <span class="pagination-links"> </span> </div> </div> </div> <? php } function invitation_code_add(){ $data_codes = ashuwp_get_invitation_code(999,1); $code_list = array(); foreach($data_codes as $code){ $code_list[] = $code['code']; } if(isset($_REQUEST['submit']) && isset($_REQUEST['ashuwp_invitation_code_field']) && check_admin_referer('ashuwp_invitation_code_action', 'ashuwp_invitation_code_field') ) { $code_prefix = ''; if(!empty($_POST['code_prefix'])){ $code_prefix = trim($_POST['code_prefix']); } $code_length = ''; if(!empty($_POST['code_length'])){ $code_length = (int)$_POST['code_length']; } if(!$code_length){ $code_length = 8; } $code_number = 1; if(!empty($_POST['code_number'])){ $code_number = (int)$_POST['code_number']; } if(!$code_number){ $code_number = 1; } $code_counter = ''; if(!empty($_POST['code_counter'])){ $code_counter = (int)$_POST['code_counter']; } if(!$code_counter){ $code_counter = 1; } $i=1; $code_tem = array(); while ( $i <= $code_number ){ $tem = strtoupper( $code_prefix . wp_generate_password( $code_length, false ) ); if(!in_array($tem,$code_list)){ $i++; $code_tem[] = $tem; ashuwp_insert_invitation_code( $tem, $code_counter, '', 1); } } } ?> <div class="wrap"> <h1 class="wp heading inline">Add invitation code</h1> <a href="<? Php echo admin_url ('admin. php? Page=invitation_code_add ');?>" class="page title action">Add</a> <hr class="wp-header-end"> <? php if(!empty($code_tem)){ ?> <div id="message" class="notice notice-success"> <p>Invitation code added successfully:</p> <? php foreach($code_tem as $text){ echo '<p>'.$ text.'</ p>'; } ?> </div> <? php } ?> <form action="" method="post"> <table class="form-table"> <tbody> <tr> <td><label for="code_prefix">Invitation code prefix</label></td> <td> <input type="text" id="code_prefix" name="code_prefix" class="regular-text"  value=""/> <p class="description">The prefix is optional</ p> </td> </tr> <tr> <td><label for="code_length">Character length of invitation code</label></td> <td> <input type="text" id="code_length" name="code_length" class="regular-text"  value=""/> <p class="description">The character length does not include the prefix. It is 8 characters by default</ p> </td> </tr> <tr> <td><label for="code_number">Number of invitation codes</label></td> <td> <input type="text" id="code_number" name="code_number" class="regular-text" value=""/> <p class="description">How many invitation codes are generated this time? The default is 1</ p> </td> </tr> <tr> <td><label for="code_counter">Number of times allowed to use</label></td> <td> <input type="text" id="code_counter" name="code_counter" class="regular-text"  value=""/> <p class="description">The number of times each invitation code is allowed to be used. It is 1 by default</ p> </td> </tr> </tbody> </table> <p class="submit"> <? php wp_nonce_field( 'ashuwp_invitation_code_action','ashuwp_invitation_code_field' ); ?> <input type="submit" name="submit" id="submit" class="button button primary" value="Generate invitation code"> </p> </form> </div> <? php } } $invitation_code = new ashuwp_invitation_code_admin();

Effect display

1. Add invitation code

2. Invitation code list

Conclusion

The above example code is only for reference and can be optimized according to the actual situation. Please consider how to use the invitation code.

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• March 6, 20
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