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<?php $v = '-'; var_dump((int) $v); $deactive = preg_replace('/[^a-zA-Z0-9-]/', '', (int) $v); var_dump($deactive); var_dump(filter_var($v, FILTER_VALIDATE_INT));
Output for git.master, git.master_jit, rfc.property-hooks
int(0) string(1) "0" bool(false)

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