How create(Add) new custom fields in profile in wordpress without plugin?

 create(Add) new custom fields in profile in wordpress without plugin

function fb_add_custom_user_profile_fields( $user ) {

?>

<h3><?php _e('Extra Profile Information', 'your_textdomain'); ?></h3>

<table class="form-table">

<tr>

<th>

<label for="phone_no"><?php _e('phone_no', 'your_textdomain'); ?>

</label></th>

<td>

<input type="text" name="phone_no" id="phone_no" value="<?php echo esc_attr( get_the_author_meta( 'phone_no', $user->ID ) ); ?>" class="regular-text" /><br />

<span class="description"><?php _e('Please enter your phone no.', 'your_textdomain'); ?></span>

</td>

</tr>

<tr>

<th>

<label for="city"><?php _e('city', 'your_textdomain'); ?>

</label></th>

<td>

<input type="text" name="city" id="city" value="<?php echo esc_attr( get_the_author_meta( 'city', $user->ID ) ); ?>" class="regular-text" /><br />

<span class="description"><?php _e('Please enter your city address.', 'your_textdomain'); ?></span>

</td>

</tr>

<tr>

<th>

<label for="dateofbirth"><?php _e('dateofbirth', 'your_textdomain'); ?>

</label></th>

<td>

<input type="date" name="dateofbirth" id="dateofbirth" value="<?php echo esc_attr( get_the_author_meta( 'dateofbirth', $user->ID ) ); ?>" class="regular-text" /><br />

<span class="description"><?php _e('Please enter your Date of birth.', 'your_textdomain'); ?></span>

</td>

</tr>

</table>

<?php }

function fb_save_custom_user_profile_fields( $user_id ) {

if ( !current_user_can( 'edit_user', $user_id ) )

return FALSE;

update_user_meta( $user_id, 'phone_no', $_POST['phone_no'] );

update_user_meta( $user_id, 'city', $_POST['city'] );

update_user_meta( $user_id, 'dateofbirth', $_POST['dateofbirth'] );

}

add_action( 'show_user_profile', 'fb_add_custom_user_profile_fields' );

add_action( 'edit_user_profile', 'fb_add_custom_user_profile_fields' );

add_action( 'personal_options_update', 'fb_save_custom_user_profile_fields' );

add_action( 'edit_user_profile_update', 'fb_save_custom_user_profile_fields' );