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<?php $body = "This is a body of {{awesome}} text {{blabla}} from a book."; //$count = 0; $terms[] = '1'; $terms[] = '2'; echo preg_replace_callback('/\{{2}(.*?)\}{2}/',function($match) use (&$count,$terms) { $return = !empty($terms[$count]) ? $terms[$count] : 'Default value for unknown term'; // $count++; echo "#$count#"; return $return; }, $body, -1, $count);
Output for git.master, git.master_jit, rfc.property-hooks
####This is a body of Default value for unknown term text Default value for unknown term from a book.

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