获取PHP数组中的最低值和最高值不会向我显示正确的数字

Question

I have the following array:

Array
(
    [0] => 124,95
    [1] => 139,95
    [2] => 149,95
    [3] => 1200
    [4] => 150
    [5] => 154,95
    [6] => 130
    [7] => 189,95
    [8] => 199,95
    [9] => 30
    [10] => 150
)

And I am trying to get the lowest (30) and highest (1200) numbers from it.

So I did this:

while($getpricesproducts = $getpricesproductscon->fetch_assoc()){
  $prijsarray[] = $getpricesproducts['prijs'];
}

// Lowest and highest price to put in price slider
$prijslow = min($prijsarray);
$prijshigh = max($prijsarray);

echo $prijslow;

echo $prijshigh;

$prijsarray is above array.

But the echoed values are 30 as min number and 150 as max. Why is that? Does it have something to do with the commas in some numbers? Still it is weird that 1200 is not the max number since it does not have any commas.

Answer 1

You can use array_map with strtr to convert all the numbers in your array from their current format to floating point. Then you can take the min and max and use number_format to convert them back to your format:

$new_array = array_map(function ($v) { return (float)strtr($v, array(',' => '.', '.' => '')); }, $array);
echo number_format(min($new_array), 2, ',', '.') . "
";
echo number_format(max($new_array), 2, ',', '.') . "
";

Output:

30,00
1.200,00

Demo on 3v4l.org