https://github.com/scottmac/opengraph/blob/master/OpenGraph.php へのdirty patch。EUC-JP、ShiftJISのサイトへ対応

OpenGraph.php.patch

diff --git "a/vendor/opengraph/OpenGraph.php" "b/vendor/opengraph/OpenGraph.php"
index aa16e55..92ccdff 100644
--- "a/vendor/opengraph/OpenGraph.php"
+++ "b/vendor/opengraph/OpenGraph.php"
@@ -61,6 +61,20 @@ class OpenGraph implements Iterator
         curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
 
         $response = curl_exec($curl);
+        $suspicious_charset = '';
+        preg_match(
+            '/<meta\s+.*?charset=(euc-jp|shift_jis).*?>/ism',
+            $response,
+            $matches
+        );
+        $suspicious_charset = $matches[1];
+        if ( preg_match( '/shift_jis/i', $suspicious_charset ) ) {
+            $suspicious_charset = 'sjis';
+        }
+        $suspicious_charset = mb_strtoupper( $suspicious_charset );
+        if ( strlen($suspicious_charset) > 0 ) {
+            $response = mb_convert_encoding( $response, 'utf-8', $suspicious_charset );
+        }
 
         curl_close($curl);