我遇到了与PHP函数array_diff有关的问题。
在两种情况下,我都将其用于相同类对象的数组上。
第一种情况:
public function findFreeUsers($weekId)
{
$em = $this->getEntityManager();
$week = $em->getRepository(Week::class)->findOneBy(["id" => $weekId]);
$busyWeeks = $em->getRepository(Week::class)->findWeekBetweenDates($week);
$busyUsers = array();
foreach ($busyWeeks AS $busyWeek) {
$tmp = $em->getRepository(UserWeek::class)->findBy(["week" => $busyWeek["id"]]);
if ($tmp != null) {
foreach($tmp AS $singleWeek) {
$busyUsers[] = $singleWeek->getUser();
}
}
}
$allUsers = $em->getRepository(User::class)->findAll();
$freeUsers = array_diff($allUsers, $busyUsers);
return $freeUsers;
}
第二种情况:
public function findFreeCars($weekId)
{
$em = $this->getEntityManager();
$week = $em->getRepository(Week::class)->findOneBy(["id" => $weekId]);
$busyWeeks = $em->getRepository(Week::class)->findWeekBetweenDates($week);
$busyCars = array();
foreach ($busyWeeks AS $busyWeek) {
$tmp = $em->getRepository(CarWeek::class)->findBy(["week" => $busyWeek["id"]]);
if ($tmp != null) {
foreach($tmp AS $singleWeek) {
$busyCars[] = $singleWeek->getCar();
}
}
}
$allCars = $em->getRepository(Car::class)->findAll();
$freeCars = array_diff($allCars, $busyCars);
return $freeCars;
}
我正在卸载这些数组,它们都是包含相同类对象的数组。
第一个情况可以运行,但在第二个情况中出现以下错误:
“错误:无法将AppBundle\Entity\Car类的对象转换为字符串”。