I have a PHP array like:
myarr[1] = "1",
myarr[2] = "1.233",
myarr[3] = "0",
myarr[4] = "2.5"
The values are actually strings, but I want this array to be sorted numerically. The sorting algorithm should respect float values and maintaining index association.
You can use the normal sort function. It takes a second parameter to tell how you want to sort it. Choose SORT_NUMERIC.
Example:
sort($myarr, SORT_NUMERIC);
print_r($myarr);
prints
Array
(
[0] => 0
[1] => 1
[2] => 1.233
[3] => 2.5
)
Update: For maintaining key-value pairs, use asort (takes the same arguments), example output:
Array
(
[3] => 0
[1] => 1
[2] => 1.233
[4] => 2.5
)
Use natsort()
$myarr[1] = "1";
$myarr[2] = "1.233";
$myarr[3] = "0";
$myarr[4] = "2.5";
natsort($myarr);
print_r($myarr);
Output:
Array ( [2] => 0 [0] => 1 [1] => 1.233 [3] => 2.5 )
You can convert your strings to real numbers (floats) and sort them afterwards:
foreach ($yourArray as $key => $value) {
$yourArray[$key] = floatval($value);
}
sort($yourArray, SORT_NUMERIC);
