Question

我有这样的表

id categories
1  80|98|22|6|76|1|24|129|59|73|7|40|85|35|42|126|81|37|128|147|106
2  15|85|49|22|6

你可以看到我在表格中有类别ID 。我有一个具有这些类别名称的另一个表。我想获得所有类别并使它们成为一个数组。到目前为止，我确实喜欢这个

<?php
$servername = "localhost";
$username = "root";
$password = "root";
$dbname = "listings";
$mysqli = new mysqli($servername, $username, $password, $dbname);

if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

$listing_array = array();
$category_array = array();

$query = "SELECT * FROM `listings` ORDER by listing_id";
    $category_array = array();
    if ($result = $mysqli->query($query)) {
    while ($obj = $result->fetch_object()) {
    $categories = $obj->categories;
  }
    foreach( $category_array as $category_names ) {
         $test = explode('|', $category_names);
    }


  $result->close();
}

$mysqli->close();
?>

在此之后如何获取类别名称并使它们成为行的数组？

Answer 1

$query = "SELECT * FROM `listings` ORDER by listing_id";
if ($result = $mysqli->query($query)) 
{
while ($obj = $result->fetch_object())
{
   $categories =array();
   $cat = explode("|",$obj->categories);
    $querycat = "SELECT CategoryName FROM `category` where category_id in '".$cat."'";
      while($objcat = $resultcat ->fetch_object())
      {
        array_push($categories,$objcat ->CategoryName); 
     }
   }
   }

php创建一个匹配id的数组列表

1 个答案: