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<?php function find_stop_in_routes($routes, $needle, $field = 'stop_code') { $result = []; for ($i = 0, $l = count($routes); $i < $l; $i++) { for ($j = 0, $k = count($routes[$i]['stops']); $j < $k; $j++) { if ($routes[$i]['stops'][$j][$field] == $needle) { $result[$i] = $j; break; } } } return $result; } $routes = [ /* your data def is too big for 3v4l */ ]; $stopCode = 'Your needle'; foreach (find_stop_in_routes($routes, $stopCode) as $routeId => $stopId) { // $routeId is your $i // $stopId is your $j }
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