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<?php function calculate_hub_sortation_check_digit($str_hub_sortation_prefix) { $arr_split_prefix = str_split($str_hub_sortation_prefix); $int_weight = 19; $int_total = 0; // calculate position coefficient foreach($arr_split_prefix as $int_i => $mix_value) { $int_total += $mix_value * $int_weight; $int_weight--; } // modulus 11 $int_hub_check_digit = $int_total % 11; // if modulus is 10, check digit is repetition of last digit if ($int_hub_check_digit === 10) { $int_hub_check_digit = array_pop($arr_split_prefix); } return $int_hub_check_digit; } echo calculate_hub_sortation_check_digit('0465011111500021051');
Output for git.master, git.master_jit, rfc.property-hooks
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