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<?php $str = 'abc<abc>abc>'; $str = preg_replace_callback('/(<)[^>]++>|.++/', function ($m) { return str_replace($m, 'a', isset($m[1]) ? 'b' : 'c', $m[0]); }, $str); echo $str;
Output for git.master, git.master_jit, rfc.property-hooks
c

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