Sort alphanumeric strings in PHP

by sabitha 2012-06-05 16:34:02

Sort alphanumeric strings in PHP



This function sorts an array using a "natural order" algorithm. This is used when handling alphanumeric strings. We can sort the alphanumeric strings in ascending order using this function.

$myarr1 = $myarr2 = array("rose12.png", "rose10.png", "rose2.png", "rose1.png");

asort($myarr1); //standard sorting
print_r($myarr1);

Standard sorting using asort will outputs as

Array
(
[3] => rose1.png
[1] => rose10.png
[0] => rose12.png
[2] => rose2.png
)


But using natsort the output differs
natsort($myarr2);
print_r($myarr2);

output is:
Array
(
[3] => rose1.png
[2] => rose2.png
[1] => rose10.png
[0] => rose12.png
)

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