仅显示3个帖子，并通过foreach循环按价格排序

Question

我遇到了一个问题，我想按for-each回显三个fullBookingURL和price 。 我的条件示出的3个数据，其price是阵列中最低，然后显示，最低price的价格

array (size=19)
  0 => 
    object(stdClass)[3820]
      public 'agencyName' => string 'ZenHotels.com' (length=13)
      public 'fullBookingURL' => string 'http://example.com' (length=25)
      public 'price' => int 590
           public 'tax' => int 0
  2 => 
    object(stdClass)[3826]
      public 'agencyName' => string 'ZenHotels.com' (length=13)
      public 'fullBookingURL' => string 'http://example.com' (length=25)
      public 'price' => int 591
      public 'tax' => int 0
  5 => 
    object(stdClass)[3835]
      public 'agencyName' => string 'Hotellook' (length=9)
      public 'fullBookingURL' => string 'http://example.com' (length=25)
      public 'price' => int 606
      public 'tax' => int 0
  6 => 
    object(stdClass)[3838]
      public 'agencyName' => string 'ZenHotels.com' (length=13)
      public 'fullBookingURL' => string 'http://example.com' (length=25)
      public 'price' => int 712
      public 'tax' => int 0
  7 => 
    object(stdClass)[3841]
      public 'agencyName' => string 'ZenHotels.com' (length=13)
      public 'fullBookingURL' => string 'http://example.com' (length=25)
      public 'price' => int 713
      public 'tax' => int 0

我的密码

foreach($sval2->rooms as $bookingurl){
    echo $bookingurl->fullBookingURL; 
    echo $bookingurl->price;
}

Answer 1

我的建议是先使用uasort对项目进行排序，然后使用array_slice获取前n元素（在您的情况下为3个元素）。

<?php

// prepare some test data
$a = new \stdClass();
$a->url = 'first_url';
$a->price = 1;

$b = new \stdClass();
$b->url = 'second_url';
$b->price = 2;

$c = new \stdClass();
$c->url = 'third_url';
$c->price = 3;

$d = new \stdClass();
$d->url = 'third_url';
$d->price = 4;

$arr = [$d, $c, $b, $a];

// sorting elements
uasort($arr, function($a, $b) { return $a->price > $b->price; });

// printing first 3 elements
print_r(array_slice($arr, 0, 3));

// Array(
//     [0] => stdClass Object
//         (
//             [url] => first_url
//             [price] => 1
//         )

//     [1] => stdClass Object
//         (
//             [url] => second_url
//             [price] => 2
//         )

//     [2] => stdClass Object
//         (
//             [url] => third_url
//             [price] => 3
//         )
// )