PHP natsort() Function


Complete PHP Array Reference

Definition and Usage

The natsort() function sorts an array by using a "natural order" algorithm. The values keep their original keys.

In a natural algorithm, the number 2 is less than the number 10. In computer sorting, 10 is less than 2, because the first number in "10" is less than 2.

This function returns TRUE on success, or FALSE on failure.

Syntax

natsort(array)

Parameter Description
array Required. Specifies the array to sort


Example

<?php
$temp_files = array("temp15.txt","temp10.txt",
"temp1.txt","temp22.txt","temp2.txt");

sort($temp_files);
echo "Standard sorting: ";
print_r($temp_files);
echo "<br />";

natsort($temp_files);
echo "Natural order: ";
print_r($temp_files);
?>

The output of the code above will be:

Standard sorting: Array
(
[0] => temp1.txt
[1] => temp10.txt
[2] => temp15.txt
[3] => temp2.txt
[4] => temp22.txt
)

Natural order: Array
(
[0] => temp1.txt
[3] => temp2.txt
[1] => temp10.txt
[2] => temp15.txt
[4] => temp22.txt
)


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