Custom password reset functionality with form for wordpress

For add a custom password reset functionality in your wordpress site or blog just copy and paste below code into new template "password reset" or whatever you want to name it. and put into your theme's folder..


<?php
/*
Template Name: Password Reset Template
*/
global $wpdb, $user_ID;

function tg_validate_url() {
    global $post;
    $page_url = esc_url(get_permalink( $post->ID ));
    $urlget = strpos($page_url, "?");
    if ($urlget === false) {
        $concate = "?";
    } else {
        $concate = "&";
    }
    return $page_url.$concate;
}

if (!$user_ID) { //block logged in users
    if(isset($_POST['action']) && $_POST['action']=='save_pw_reset')
    {
        if ( !wp_verify_nonce( $_POST['save_pwd_nonce'], "save_reset_password")) {
          exit("No trick please");
       }
        $user_login = base64_decode($_POST['user_token']);
        $user_data = $wpdb->get_row("SELECT ID, user_login, user_email FROM $wpdb->users WHERE ID = '".$user_login."'");
        if($user_data)
        {
            wp_set_password( $_POST['new_password'], $user_login );
            $wpdb->update($wpdb->users,array('user_activation_key'=>''),array('ID'=>$user_login));
            echo json_encode(array('status'=>'success','msg'=>'Password Reset successfully'));
        }else
        {
            echo json_encode(array('status'=>'error','msg'=>'please try again'));
        }
        exit();
    }

    if(isset($_GET['key']) && $_GET['action'] == "reset_pwd") {
        $reset_key = $_GET['key'];
        $user_login = base64_decode($_GET['login']);
        $user_data = $wpdb->get_row($wpdb->prepare("SELECT ID, user_login, user_email FROM $wpdb->users WHERE user_activation_key = %s AND (user_login = %s OR user_email = %s )" , $reset_key, $user_login,$user_login));
       
        $user_login = $user_data->user_login;
        $user_email = $user_data->user_email;
       
        if(!empty($reset_key) && !empty($user_data)) {
           
                get_header(); ?>
              
        <div data-height="200" class="title_outer title_without_animation">
        <div style="height:100px;" class="title title_size_small  position_left ">
            <div class="image not_responsive"></div>
                                        <div style="height:100px;" class="title_holder">
                    <div class="container">
                        <div class="container_inner clearfix">
                                <div class="title_subtitle_holder">
                                                                                                    <h1><span><?php echo the_title();  ?></span></h1>
                                                                   
                                                                                                                                                                    </div>
                        </div>
                    </div>
                </div>
                                </div>
            </div>
<div class="container">
            <?php if(isset($qode_options_proya['overlapping_content']) && $qode_options_proya['overlapping_content'] == 'yes') {?>
                <div class="overlapping_content"><div class="overlapping_content_inner">
            <?php } ?>
            <div class="container_inner forgot_password default_template_holder clearfix">
            <div class="forgot_box">
               
                    <?php if ( have_posts() ) : ?>
   
        <?php while ( have_posts() ) : the_post(); ?>
            <div class="pwd_res_container">
            <p>Please enter your new password.</p>
            <form method="post" action=""  id="saveresetpwdfrm">
            <label>New password</label>
            <br />           
            <input type="password" class="text" name="new_password" id="new_password"  value="" style="width:200px" /><br /><br />
            <label>Repeat new password</label>
            <br />       
            <input type="hidden" name="user_email" value="<?php echo $user_email; ?>" />
            <input type="password" class="text" name="repeat_new_password" id="repeat_new_password" value="" style="width:200px" /><br />
            <input type="hidden" name="action" value="save_pw_reset" />
            <input type="hidden" name="save_pwd_nonce" value="<?php echo wp_create_nonce("save_reset_password"); ?>" />
            <input type="hidden" name="user_token" value="<?php echo base64_encode($user_data->ID); ?>" />
            <input type="submit" id="savesubmitbtn" class="reset_password" name="submit" value="Save" />       
            </form>
            <div id="result"></div> <!-- To hold validation results -->
            </div>
            <script type="text/javascript">                         
            jQuery("#saveresetpwdfrm").submit(function() {
             if(jQuery('#new_password').val()!='')
             {
                if(jQuery('#repeat_new_password').val()!='')
                {
                    if(jQuery('#new_password').val() == jQuery('#repeat_new_password').val())
                    {
                            jQuery('#result').html('<span class="loading">Validating...</span>').fadeIn();
                            var input_data = jQuery('#saveresetpwdfrm').serialize();
                            jQuery.ajax({
                            type: "POST",
                            url:  "<?php echo get_permalink( $post->ID ); ?>",
                            data: input_data,
                            success: function(msg){
                             change_data = JSON.parse(msg);
                            if(change_data.status=='success')
                            {
                              jQuery('.pwd_res_container').html('<div><p>Your password reset successfully.</p><p><a href="<?php echo home_url('/login'); ?>">Click here </a> to logged in.</p></div>').fadeIn();
                            }else
                            {
                                jQuery('#result').html(change_data.msg).fadeIn();
                            }
                            }
                            });
                    }else
                    {
                        jQuery('#result').html('<span class="loading">Password and repeat password not matched</span>').fadeIn();
                    }
                }else
                {
                    jQuery('#result').html('<span class="loading">Please enter repeat password</span>').fadeIn();
                }
             }else
             {
                jQuery('#result').html('<span class="loading">Please enter password</span>').fadeIn();
             }
       
            return false;
           
            });
            </script>
           
    <?php endwhile; ?>
       
    <?php else : ?>
       
            <h2><?php _e('Not Found'); ?></h1>
           
    <?php endif; ?>
           
            </div></div>
            <?php if(isset($qode_options_proya['overlapping_content']) && $qode_options_proya['overlapping_content'] == 'yes') {?>
                </div></div>
            <?php } ?>
            <style>
            .container_inner.forgot_password.default_template_holder.clearfix > div {
  margin-bottom: 35px;
}
            #savesubmitbtn {
  background: #ff9900 none repeat scroll 0 0;
  border: medium none;
  border-radius: 3px;
  color: #fff !important;
  font-size: 15px;
  margin-top: 15px;
  padding: 10px;
  text-transform: capitalize;
  cursor: pointer;
}
.forgot_box {
  border: 2px solid rgb(0, 128, 0);
  padding: 20px;
  width: 50%;
}
.pwd_res_container  div#result {
  font-style: italic;
  font-weight: bold;
  margin-top: 20px;
}
            </style>
        </div>
        <?php
        get_footer();
           
        }
        else
        {
            $redirect_to = get_permalink( $post->ID );
                wp_safe_redirect($redirect_to);
                exit();
        }
       
    }
    //exit();

    if($_POST['action'] == "tg_pwd_reset"){
        if ( !wp_verify_nonce( $_POST['tg_pwd_nonce'], "tg_pwd_nonce")) {
          exit("No trick please");
       } 
        if(empty($_POST['user_input'])) {
            echo "<div class='error'>Please enter your Username or E-mail address</div>";
            exit();
        }
        //We shall SQL escape the input
        $user_input = $wpdb->escape(trim($_POST['user_input']));
       
        if ( strpos($user_input, '@') ) {
            $user_data = get_user_by_email($user_input);
            if(empty($user_data)  ) { //delete the condition $user_data->caps[administrator] == 1, if you want to allow password reset for admins also
                echo "<div class='error'>Invalid E-mail address!</div>";
                exit();
            }
        }
        else {
            $user_data = get_userdatabylogin($user_input);
            if(empty($user_data) ) { //delete the condition $user_data->caps[administrator] == 1, if you want to allow password reset for admins also
                echo "<div class='error'>Invalid Username!</div>";
                exit();
            }
        }
       
        $user_login = $user_data->user_login;
        $user_email = $user_data->user_email;
       
        $key = $wpdb->get_var($wpdb->prepare("SELECT user_activation_key FROM $wpdb->users WHERE user_login = %s OR user_email = %s ", $user_login));
       
            //generate reset key
            $key = wp_generate_password(20, false);
          
            $key = sha1($key . $user_email . uniqid(time(), true));
            $wpdb->update($wpdb->users, array('user_activation_key' => $key), array('user_login' => $user_login));   
       
       
        //mailing reset details to the user
        $message = __('Someone requested that the password be reset for the following account:') . "\r\n\r\n";
        $message .= get_option('siteurl') . "\r\n\r\n";
        $message .= sprintf(__('Username: %s'), $user_login) . "\r\n\r\n";
        $message .= __('If this was a mistake, just ignore this email and nothing will happen.') . "\r\n\r\n";
        $message .= __('To reset your password, visit the following address:') . "\r\n\r\n";
        $message .= tg_validate_url() . "action=reset_pwd&key=$key&login=" . base64_encode($user_login) . "\r\n";
        $headers[] = 'From: Techventure Kids < contact@techventurekids.org >';
        if ( $message && !wp_mail($user_email, 'Password Reset Request From Techventure Kids', $message, $headers) ) {
            echo "<div class='error'>Email failed to send for some unknown reason.</div>";
            exit();
        }
        else {
            echo "<div class='success'>We have just sent you an email with Password reset instructions.</div>";
            exit();
        }
       
    } else if($_REQUEST['action']!='reset_pwd') {

get_header(); ?>
<div data-height="200" class="title_outer title_without_animation">
        <div style="height:100px;" class="title title_size_small  position_left ">
            <div class="image not_responsive"></div>
                                        <div style="height:100px;" class="title_holder">
                    <div class="container">
                        <div class="container_inner clearfix">
                                <div class="title_subtitle_holder">
                                                                                                    <h1><span><?php echo the_title();  ?></span></h1>
                                                                   
                                                                                                                                                                    </div>
                        </div>
                    </div>
                </div>
                                </div>
            </div>
<div class="container">
            <?php if(isset($qode_options_proya['overlapping_content']) && $qode_options_proya['overlapping_content'] == 'yes') {?>
                <div class="overlapping_content"><div class="overlapping_content_inner">
            <?php } ?>
            <div class="container_inner forgot_password default_template_holder clearfix">
            <div class="forgot_box">
               
                    <?php if ( have_posts() ) : ?>
   
        <?php while ( have_posts() ) : the_post(); ?>
            <p>Please enter your username or email address. <br/>You will receive a link to create a new password via email.</p>
            <form class="user_form" id="wp_pass_reset" action="" method="post">   
            <label>Username or Email:</label>
            <br />       
            <input type="text" class="text" name="user_input" value="" style="width:200px" /><br />
            <input type="hidden" name="action" value="tg_pwd_reset" />
            <input type="hidden" name="tg_pwd_nonce" value="<?php echo wp_create_nonce("tg_pwd_nonce"); ?>" />
            <input type="submit" id="submitbtn" class="reset_password" name="submit" value="Reset Password" />                   
            </form>
            <div id="result"></div> <!-- To hold validation results -->
            <script type="text/javascript">                         
            jQuery("#wp_pass_reset").submit(function() {           
            jQuery('#result').html('<span class="loading">Validating...</span>').fadeIn();
            var input_data = jQuery('#wp_pass_reset').serialize();
            jQuery.ajax({
            type: "POST",
            url:  "<?php echo get_permalink( $post->ID ); ?>",
            data: input_data,
            success: function(msg){
            jQuery('.loading').remove();
            jQuery('<div>').html(msg).appendTo('div#result').hide().fadeIn('slow');
            }
            });
            return false;
           
            });
            </script>
           
    <?php endwhile; ?>
       
    <?php else : ?>
       
            <h2><?php _e('Not Found'); ?></h1>
           
    <?php endif; ?>
               
            </div></div>
            <?php if(isset($qode_options_proya['overlapping_content']) && $qode_options_proya['overlapping_content'] == 'yes') {?>
                </div></div>
            <?php } ?>
        </div>
        <style>
        .container_inner.forgot_password.default_template_holder.clearfix > div {
  margin-bottom: 35px;
}
#submitbtn.reset_password, #savesubmitbtn {
  background: #ff9900 none repeat scroll 0 0;
  border: medium none;
  border-radius: 3px;
  color: #fff !important;
  font-size: 15px;
  margin-top: 15px;
  padding: 10px;
  text-transform: capitalize;
}
.forgot_box {
  border: 2px solid rgb(0, 128, 0);
  padding: 20px;
  width: 50%;
}
.forgot_box > div#result {
  font-style: italic;
  font-weight: bold;
  margin-top: 20px;
}
        </style>
<?php

get_footer();
    }
}
else {
    wp_redirect( home_url() ); exit;
    //redirect logged in user to home page
}
?>

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