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<title>[34536] trunk/src/wp-includes/comment-functions.php: Introduce 'duplicate_comment_id' filter.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/34536">34536</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/34536","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>boonebgorges</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2015-09-25 05:22:53 +0000 (Fri, 25 Sep 2015)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Introduce 'duplicate_comment_id' filter.
`wp_allow_comment()` disallows a comment if it matches a comment on the same
post with the same content, author email, and parent. This new filter allows
developers to circumvent or modify this logic, making the duplicate check
more or less lenient, as they see fit.
Fixes <a href="https://core.trac.wordpress.org/ticket/9775">#9775</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludescommentfunctionsphp">trunk/src/wp-includes/comment-functions.php</a></li>
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<h3>Diff</h3>
<a id="trunksrcwpincludescommentfunctionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/comment-functions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/comment-functions.php 2015-09-25 05:10:40 UTC (rev 34535)
+++ trunk/src/wp-includes/comment-functions.php 2015-09-25 05:22:53 UTC (rev 34536)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -590,7 +590,22 @@
</span><span class="cx" style="display: block; padding: 0 10px"> ") AND comment_content = %s LIMIT 1",
</span><span class="cx" style="display: block; padding: 0 10px"> wp_unslash( $commentdata['comment_content'] )
</span><span class="cx" style="display: block; padding: 0 10px"> );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- if ( $wpdb->get_var( $dupe ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ $dupe_id = $wpdb->get_var( $dupe );
+
+ /**
+ * Filters the ID, if any, of the duplicate comment found when creating a new comment.
+ *
+ * Return an empty value from this filter to allow what WP considers a duplicate comment.
+ *
+ * @since 4.4.0
+ *
+ * @param int $dupe_id ID of the comment identified as a duplicate.
+ * @param array $commentdata Data for the comment being created.
+ */
+ $dupe_id = apply_filters( 'duplicate_comment_id', $dupe_id, $commentdata );
+
+ if ( $dupe_id ) {
</ins><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px"> * Fires immediately after a duplicate comment is detected.
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span></span></pre>
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