$//05$: Decode $usersJSON

$usersJSON $=$ file$\_$get$\_$contents$(\text{'}$users$.$json'$)$;

$users $=$ json$\_$decode$($$usersJSON, true$)$;

foreach $($$users as $user$)\{$

echo $user$[\text{'}$email$\text{'}]."$

$"$;

$\}$

$//06$: Create a new Vehicle instance

$myTruck $=$ new Vehicle$("$gasoline$")$;

echo json$\_$encode$($$myTruck$)."$

$"$;$/09$: Use the set$\_$species method and create $petArray

$pet$1->$set$\_$species$("$Cow$")$;

$pet$2->$set$\_$species$("$Dog$")$;

$pet$3->$set$\_$species$("$Duck$")$;

$petArray $=[$$pet$1,$ $pet$2,$ $pet$3]$;

foreach $($array$\_$reverse$($$petArray$)$ as $pet$)\{$

echo $pet$->$get$\_$name$()."$

$"$;

$\}$

$//10$: Encode $petArray and $rides array to JSON

echo json$\_$encode$($$petArray$)."$

$"$;

$rides $=[$$myVehicle, $myTruck$]$;

echo json$\_$encode$($$rides$)."$

$"$;

$?>$what is wrong with this parts?