如何在多维数组中搜索文本或数字

Question

我正在尝试创建一个条件，其中条件应该检查​​多维数组中是否存在位置或邮政编码，如果满足任何一个条件，它应该返回 true 或 false

这是我尝试使用数组的代码

$cars = array("locationabc","locationdef","locationdghi");
$locality = "locationabc";
if ( in_array($locality, $cars) ) {
    echo "you can proceed service to your location";
    }else {
            echo "sorry we don't provide service to your location";
        }

但是如何在多维数组中做到这一点，我不知道下面的条件是对还是错

$cars = array
  (
  array("locationabc",500001),
  array("locationdef",500002),
  array("locationdghi",500003)
  );
$locality = "locationabc";

  if ( array_key_exists($locality, $cars) ) {
                echo "you can proceed service to your location";
            }else {
            echo "sorry we don't provide service to your location";
        }

Answer 1

我假设您有按照您展示的示例的多维数组。你可以这样做

$cars = array
(
  array("locationabc",500001),
  array("locationdef",500002),
  array("locationdghi",500003)
);
$locality = "locationabc";

foreach($cars as $car){
    if ( in_array($locality, $car) ) {
        $msg = "you can proceed service to your location";
        break;
    }else {
        $msg = "sorry we don't provide service to your location";
    }
}
echo $msg;

Answer 2

您可以使用以下示例来检查值是否存在-

$flag = 0;
  foreach($cars as $c)
  {
      if(in_array($locality,$c))
      {
          $flag = 1;
          break;
      }

  }

if($flag == 1)
    echo 'value exist';
else
    echo 'value does not exist';