将逗号分隔的值插入mysql数据库PHP

Question

I asked a similar question yesterday but it's not the same. I have some values that looks like this, and I want to Insert them So that

123,567,287,124,172,846,372,187

And I want it to look like this

id=123 and SortNumber=1
id=567 and SortNumber=2
id=287 and SortNumber=3

And I want to update a table based on this, so something like this

UPDATE char_
SET SortNumber=1
WHERE id=123
Set SortNumber=2
WHERE id=567

Now, I think I can do something like this

$variable=123,567,287,124,172,846,372,187
$anothervariable=$variable = str_replace(",", "\r\n", $variable); 


$i=0;
$i++;

 mysqli_query(UPDATE char_ SET SortNumber=$i WHERE id=$anothervariable)

But, I'm not sure that the code is 100 correct AND, the variable will be the whole contents and I dont know how I can set a different variable to every line?

Answer 1

Ironically, you can do this directly in MySQL

update char_
    set sortnumber = find_in_set(id, $variable)
    where find_in_set(id, $variable) > 0;

Note: this will not take advantage of an index on id , so only use this if char_ is small (tens or hundreds of rows) or you do not care about performance.

Answer 2

Suggest you to use explode() and foreach() .

$variable = '123,567,287,124,172,846,372,187';
$columns = array_filter(explode(',', $variable));
foreach($columns as $key=>$val){
    $sql = "UPDATE char_ SET SortNumber = '".($key + 1)."' WHERE id = " . $val;
    $result = mysqli_query($con, $sql);
    //.....
}