在php中实时排序查询结果

Question

I have a query which goes through the table and outputs the data like this:

Query

$query = mysql_query("SELECT * FROM `products`");
while($row = mysql_fetch_assoc($query)){
    $array[] = $row;
}

foreach ($array as $key) {
    $name[]    = $key['name'];
    $desc[]    = $key['desc'];
    $cost[]    = $key['price'];
}

$c = 0;
while($c<(count($array))){
    echo 'Name: '.$name[$c].'<br>';
    echo 'Desc: '.$desc[$c].'<br>';
    echo 'Price: '.$cost[$c].'<br><br>';
    $c++;
}

Results

Name: xyz1
Desc: asdxsadasda
Price: 999

Name: xyz2
Desc: asdxsadasda
Price: 333

Name: xyz3
Desc: asdxsadasda
Price: 666

I want to be able to sort these results based on the price of each item.
Can I output the result in a jSON file and use that to sort the results (live-without loading the page)?

Could you suggest me a better way to sort the results without having to load the page?

Answer 1

$query = mysql_query("SELECT * FROM `products` WHERE `category` order by products.price, products.name");

您可以选择按ASC或DESC排序

Answer 2

If you MUST sort the array in PHP, after you got the query result, use the array_multisort function in PHP ( http://www.php.net/manual/en/function.array-multisort.php )

However, if your life does not depend on sorting in PHP, sort at the source in your SQL (the way God intended it to be) it's going to be much much faster and it will take the load off the web server.

Hope this helps.

Answer 3

SELECT * FROM `products` order by price, name

此外，您不需要foreach，因为您可以在while循环中进行阵列设置。