$contents = $openGraphLibrary->removeOverlappingTags($contents);
$search = '/' . preg_quote($placeholder, '/') . '/';
$contents = preg_replace($search, $graphTags, $contents, 1);
$contents = $openGraphLibrary->removeOverlappingTags($contents);
$search = '/' . preg_quote($placeholder, '/') . '/';
$graphTags = str_replace('$', '\$', $graphTags); // ADD THIS LINE
$contents = preg_replace($search, $graphTags, $contents, 1);
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