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<title>[BuddyPress][10670] trunk/src/bp-core/classes/class-bp-phpmailer.php: Emails: fix fatal errors when sending emails with old versions of WordPress (<4.3).</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="http://buddypress.trac.wordpress.org/changeset/10670">10670</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"http://buddypress.trac.wordpress.org/changeset/10670","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>djpaul</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2016-03-21 17:36:26 +0000 (Mon, 21 Mar 2016)</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'>Emails: fix fatal errors when sending emails with old versions of WordPress (<4.3).
An upstream change in WordPress #WP25560 updated the version of
PHPMailer bundled with WordPress, from version 5.2.4 to 5.2.7. Prior to
that change, it was also impossible to use PHPMailer directly (outside
of `wp_mail()`) due to how PHPMailer was/is bundled with WordPress. The
PHPMailer change that concerns us is in `PHPMailer->html2text()`. A
parameter to use "advanced HTML-to-text conversion" was a bool, but in
the later version, it was changed to a callable parameter.
All of the above, combined with PHP's handling of truthy variables,
meant we were triggering the PHPMailer bug, responsible for the fatal
errors, on sites running old version of WordPress.
Fortunately, the fix is simple. We can remove our custom HTML-to-text
conversion parameter as it doesn't actually matter because we always
explicitly set the plain text version of the email content, after
PHPMailer runs its built-in HTML-to-text conversion function,
regardless of whether BuddyPress sends emails in plain text or HTML.
Fixes <a href="http://buddypress.trac.wordpress.org/ticket/6970">#6970</a></pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcbpcoreclassesclassbpphpmailerphp">trunk/src/bp-core/classes/class-bp-phpmailer.php</a></li>
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<a id="trunksrcbpcoreclassesclassbpphpmailerphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/bp-core/classes/class-bp-phpmailer.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/bp-core/classes/class-bp-phpmailer.php 2016-03-21 16:26:22 UTC (rev 10669)
+++ trunk/src/bp-core/classes/class-bp-phpmailer.php 2016-03-21 17:36:26 UTC (rev 10670)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -65,7 +65,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $content_plaintext = PHPMailer::normalizeBreaks( $email->get_content_plaintext( 'replace-tokens' ) );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> if ( $email->get( 'content_type' ) === 'html' ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $phpmailer->msgHTML( $email->get_template( 'add-content' ), '', 'wp_strip_all_tags' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $phpmailer->msgHTML( $email->get_template( 'add-content' ) );
</ins><span class="cx" style="display: block; padding: 0 10px"> $phpmailer->AltBody = $content_plaintext;
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> } else {
</span></span></pre>
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