基于字符串“ 1、5、3、7”的sql查询->保持结果顺序

Question

i have a simple php string with some id's.

    $string = "10, 5, 10, 3";

i want to fetch based on these ids some sql, without loosing the order of the ids saved in the string. i tryed:

    SELECT * FROM media WHERE ID IN ($string);

but the results are now ordered, and double id's are gone

    output array:  3, 5, 10

how could i use MYSQL to get the rows like this

    row0 : id=>10, 
    row1 : id=>5,
    row2 : id=>10,
    row3 : id=>3

is there a way doing this without running a query for every id ?

for a better understanding - here my table structure for table called media. its for saving uploaded images + description + metadata.

    id, int
    file, varchar
    description_de, varchar
    description_en, varchar
    size, varchar
    width, int
    height, int

and there is a table "projects" where i store just the image id for a project . the structure is complex. nobody need to know here. theres a field "media" where i store the media-ids like this : "1,5,33,9,10,1" to store TWO things. first the ORDER of images i wana display. SECOND the image id itself .

i need a query to get the images with basicly all fields from media - in the right ORDER .

Answer 1

its better to handle on the php side. Pass the unique ID's to mysql query and shape the data as per your need.

$x = [['id'=>10, 'name'=>'a'], ['id'=>3, 'name'=>'b'], ['id'=>5, 'name'=>'c'] ];
$order = [10,3,5,10,3,5];

$result = [];
foreach($order as $k => $v){
  foreach($x as $x_a){
    if($x_a['id'] == $v){ $result[$k] = $x_a; break; }
  } 
}
print_r($result);