PHP natcasesort() Function

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# PHP natcasesort() Function

Complete PHP Array Reference

## Definition and Usage

The natcasesort() 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 is case-insensitive.

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

## Syntax

    natcasesort(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");

    natsort($temp_files);
    echo "Natural order: ";
    print_r($temp_files);
    echo "<br />";

    natcasesort($temp_files);
    echo "Natural order case insensitve: ";
    print_r($temp_files);
    ?>

The output of the code above will be:

    Natural order:
    Array
    (
    [0] => Temp10.txt
    [1] => Temp22.txt
    [2] => temp1.txt
    [4] => temp2.txt
    [3] => temp15.txt
    )
    Natural order case insensitve:
    Array
    (
    [2] => temp1.txt
    [4] => temp2.txt
    [0] => Temp10.txt
    [3] => temp15.txt
    [1] => Temp22.txt
    )

Complete PHP Array Reference

From http://www.w3schools.com (Copyright Refsnes Data)