DCoda

<p>This plugin is only supported on PHP 5.2 or greater.</p>
<p><br />
ExportReaders easily allows you to export your users details for use elsewhere.<br />
Just select the roles you with to export and set the criteria to select the commenters and download its that simple.<br />
</p>
<p>If you are having trouble and cannot find the answers in the <a href="http://exportreaders.dcoda.co.uk/help/faq/" rel="nofollow ugc">FAQ</a> you can post your support questions to the <a href="https://wordpress.org/tags/export-readers" rel="ugc">WordPress Support Forum</a></p>
<p>If you find ExportReaders useful please rate it at <a href="https://wordpress.org/extend/plugins/export-readers/" rel="ugc">wordpress.org</a> and please consider making a <a href="http://exportreaders.dcoda.co.uk/donate/" rel="nofollow ugc">donation</a> to help us set aside more hours to maintain ExportReaders</p>
<p>ExportReaders is written by <a href='http://dcoda.co.uk' rel="nofollow ugc">dcoda</a></p>
<p>You can check out our other plugins <a href="https://profiles.wordpress.org/users/dcoda/" rel="nofollow ugc">here</a></p>
<p>If you require a custom plugin you can contact us <a href="http://dcoda.co.uk/contact/" rel="nofollow ugc">here</a> and maybe we could write it for you.</p>
<h3>Copyright</h3>
<p>(c) Copyright DCoda Limited, 2007 -, All Rights Reserved.</p>
<p>This code is released under the GPL license version 2, available here:</p>
<p><a href="http://www.gnu.org/licenses/gpl.txt" rel="nofollow ugc">http://www.gnu.org/licenses/gpl.txt</a></p>
<p>There are so many possibly configurations of installation the plugin can be installed on we limit testing to a PHP 5.2+ Linux platform running the latest version of WordPress at the time of release but it is released WITHOUT ANY WARRANTY;<br />
 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</p>

ExportReaders

Selectively export all your reader details ( users and commenters )

Masahiro NAKASHIMA

<p>You can export posts in CSV format for each post type.<br />
It is compatible with posts’ custom fields and custom taxonomies.<br />
It is also possible to set the number or date range of posts to download.</p>
<h3>How to customize export post data</h3>
<p>This plugin has below filters.</p>
<ul>
<li>wp_csv_exporter_post_name</li>
<li>wp_csv_exporter_post_title</li>
<li>wp_csv_exporter_post_content</li>
<li>wp_csv_exporter_post_excerpt</li>
<li>wp_csv_exporter_post_status</li>
<li>wp_csv_exporter_post_author</li>
<li>wp_csv_exporter_post_date</li>
<li>wp_csv_exporter_post_modified</li>
<li>wp_csv_exporter_thumbnail_url</li>
<li>wp_csv_exporter_post_tags</li>
<li>wp_csv_exporter_post_category</li>
<li>wp_csv_exporter_tax_{taxonomy}</li>
<li>wp_csv_exporter_{custom_field_key}</li>
</ul>
<h4>wp_csv_exporter_post_name</h4>
<p>Parameters:</p>
<ul>
<li><code>$post_name</code> – (required) post slug</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<p>Example:</p>
<pre><code>add_filter( 'wp_csv_exporter_post_name', 'wp_csv_exporter_post_name_filter', 10, 3 );
function wp_csv_exporter_post_name_filter( $post_name, $post_id  ) {
    return $post_name;
}
</code></pre>
<h4>wp_csv_exporter_post_title</h4>
<p>Parameters:</p>
<ul>
<li><code>$post_title</code> – (required) post title</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<p>Example:</p>
<pre><code>add_filter( 'wp_csv_exporter_post_title', 'wp_csv_exporter_post_title_filter', 10, 3 );
function wp_csv_exporter_post_title_filter( $post_title, $post_id  ) {
    $post_title = $post_id . ':' . $post_title;
    return $post_title;
}
</code></pre>
<h4>wp_csv_exporter_post_content</h4>
<p>Parameters:</p>
<ul>
<li><code>$post_content</code> – (required) post content</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<h4>wp_csv_exporter_post_excerpt</h4>
<p>Parameters:</p>
<ul>
<li><code>$post_excerpt</code> – (required) post excerpt</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<h4>wp_csv_exporter_post_status</h4>
<p>Parameters:</p>
<ul>
<li><code>$post_status</code> – (required) post status</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<h4>wp_csv_exporter_post_author</h4>
<p>Parameters:</p>
<ul>
<li><code>$post_author</code> – (required) post author</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<h4>wp_csv_exporter_post_date</h4>
<p>Parameters:</p>
<ul>
<li><code>$post_date</code> – (required) post date</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<h4>wp_csv_exporter_post_modified</h4>
<p>Parameters:</p>
<ul>
<li><code>$post_modified</code> – (required) post modified date</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<h4>wp_csv_exporter_post_thumbnail_url</h4>
<p>Parameters:</p>
<ul>
<li><code>$post_thumbnail_url</code> – (required) post thumbnail_url</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<h4>wp_csv_exporter_post_tags</h4>
<p>Parameters:</p>
<ul>
<li><code>$post_tags</code> – (array)(required) post tags</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<p>Example:</p>
<pre><code>add_filter( 'wp_csv_exporter_post_tags', 'wp_csv_exporter_post_tags_filter', 10, 3 );
function wp_csv_exporter_post_tags_filter( $post_tags, $post_id  ) {
    $_post_tags = array();
    foreach ( $post_tags as $key => $tag ) {
        $_post_tags[] = 'Tag:'.$tag;
    }
    return $_post_tags;
}
</code></pre>
<h4>wp_csv_exporter_category</h4>
<p>Parameters:</p>
<ul>
<li><code>$category</code> – (array)(required) post category</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<p>Example:</p>
<pre><code>add_filter( 'wp_csv_exporter_category', 'wp_csv_exporter_category_filter', 10, 3 );
function wp_csv_exporter_post_category_filter( $category, $post_id  ) {
    $_category = array();
    foreach ( $category as $key => $value ) {
        $_category[] = 'Category:'.$value;
    }
    return $_category;
}
</code></pre>
<h4>wp_csv_exporter_tax_{taxonomy}</h4>
<p>Parameters:</p>
<ul>
<li><code>$term_values</code> – (array)(required) post taxonomy</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<p>Example: taxonomy = “dogs”</p>
<pre><code>add_filter( 'wp_csv_exporter_tax_dogs', 'wp_csv_exporter_tax_dogs_filter', 10, 3 );
function wp_csv_exporter_tax_dogs_filter( $term_values, $post_id ) {
    $_term_values = array();
    foreach ( $term_values as $key => $term_value ) {
        $_term_values[] = 'Dog:'.$term_value;
    }
    return $_term_values;
}
</code></pre>
<h4>wp_csv_exporter_{custom_field_key}</h4>
<p>Parameters:</p>
<ul>
<li><code>$field</code> – (required) post custom field</li>
<li><code>$post_id</code> – (int) post id</li>
</ul>
<p>Example: custom field key = “price”</p>
<pre><code>add_filter( 'wp_csv_exporter_price', 'wp_csv_exporter_price_filter', 10, 3 );
function wp_csv_exporter_price_filter( $field, $post_id ) {
    return 'Price:'.$field;
}
</code></pre>


WP CSV Exporter

You can export posts in CSV format for each post type. It is compatible with posts' custom fields and custom taxonomies.

ExportReaders vs WP CSV Exporter