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<?php $ingredients = "aaa (1,2,3) bbb [4,5,6,7]"; $clean_ingredients = preg_replace_callback('/\([^()]*\)|\[[^][]*]/', function($m) {return str_replace(',', '! ', $m[0]);}, $ingredients ); echo $clean_ingredients;
Output for git.master, git.master_jit, rfc.property-hooks
aaa (1! 2! 3) bbb [4! 5! 6! 7]

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