Multiple Select value saving Issue

2 Views

i make meta box and in this i make select option with multiple 

$opt_meta_author = get_post_meta($post->ID, 'opt_meta_author', true);

<select name="opt_meta_author" id="opt_meta_author" multiple="multiple">
    <?php
        $auth_args = array(
            'post_type' => 'author',
            'orderby' => 'title',
            'order' => 'ASC'
        );

        $authors = new WP_Query($auth_args);

        while($authors->have_posts()) :
            $authors->the_post();
    ?>
        <option value="<?php echo the_title() ?>">
            <?php echo the_title() ?>
        </option>
    <?php
        endwhile;
    ?>
</select>

when i select multiple options it save only one option, i want to save selected options

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is there any suggestions

Saving meta values 

$opt_meta_author = $_POST['opt_meta_author'];
update_post_meta( $post->ID, 'opt_meta_author', $opt_meta_author);
Post Views: 2

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2 comments 

  1. $opt_meta_author = unserialize(get_post_meta($post->ID, 'opt_meta_author', true));

<select name="opt_meta_author" id="opt_meta_author" multiple="multiple">
                <?php
                    $auth_args = array(
                        'post_type' => 'author',
                        'orderby' => 'title',
                        'order' => 'ASC'
                    );
                $authors = new WP_Query($auth_args);

                while($authors->have_posts()) :
                    $authors->the_post();
            ?>
                    <option value="<?php echo the_title() ?>">
                        <?php echo the_title() ?>
                    </option>
            <?php
                endwhile;
            ?>
            </select>

    To get multiple selected value while storing do this:

    $opt_meta_author = serialize($_POST['opt_meta_author']);