From 4fb31473e8abdc225c30bd2af146fa91e517c55f Mon Sep 17 00:00:00 2001
From: Scott Taylor <wonderboymusic@git.wordpress.org>
Date: Wed, 11 Feb 2015 19:14:09 +0000
Subject: [PATCH] After [31415], make sure `str_replace()` only occurs once for
 each matched tag to avoid overwriting until `<pre>`s.

See #31214.


git-svn-id: https://develop.svn.wordpress.org/trunk@31416 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-includes/class-oembed.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/wp-includes/class-oembed.php b/src/wp-includes/class-oembed.php
index 8891d2e2a9..8f8bccab79 100644
--- a/src/wp-includes/class-oembed.php
+++ b/src/wp-includes/class-oembed.php
@@ -568,6 +568,8 @@ class WP_oEmbed {
 		if ( class_exists( 'DOMDocument' ) ) {
 			$token = '__PRE__';
 			$replace = array();
+			$count = 1;
+
 			$dom = new DOMDocument();
 			$dom->loadHTML( $html );
 			$tags = $dom->getElementsByTagName( 'pre' );
@@ -575,7 +577,8 @@ class WP_oEmbed {
 				$tag_html = $dom->saveHTML( $tag );
 				$tag_token = $token . $i;
 				$replace[ $tag_token ] = $tag_html;
-				$html = str_replace( $tag_html, $tag_token, $html );
+
+				$html = str_replace( $tag_html, $tag_token, $html, $count );
 			}
 			$pre = array_values( $replace );
 			$tokens = array_keys( $replace );