sort numeric string array in php

Question

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, also considering float values and maintaining index association.

Please help me out. Thanks

Answer 1

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 ) 

Answer 2

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 )