Funcții ale tablourilor (Array)
PHP Manual

natsort

(PHP 4, PHP 5, PHP 7)

natsortSort an array using a "natural order" algorithm

Descrierea

bool natsort ( array &$array )

This function implements a sort algorithm that orders alphanumeric strings in the way a human being would while maintaining key/value associations. This is described as a "natural ordering". An example of the difference between this algorithm and the regular computer string sorting algorithms (used in sort()) can be seen in the example below.

Notă:

If two members compare as equal, their relative order in the sorted array is undefined.

Parametri

array

The input array.

Valorile întoarse

Întoarce valoarea TRUE în cazul succesului sau FALSE în cazul eșecului.

Istoricul schimbărilor

Versiune Descriere
5.2.10 Zero padded numeric strings (e.g., '00005') now essentially ignore the 0 padding.

Exemple

Example #1 natsort() examples demonstrating basic usage

<?php
$array1 
$array2 = array("img12.png""img10.png""img2.png""img1.png");

asort($array1);
echo 
"Standard sorting\n";
print_r($array1);

natsort($array2);
echo 
"\nNatural order sorting\n";
print_r($array2);
?>

Exemplul de mai sus va afișa:

Standard sorting
Array
(
    [3] => img1.png
    [1] => img10.png
    [0] => img12.png
    [2] => img2.png
)

Natural order sorting
Array
(
    [3] => img1.png
    [2] => img2.png
    [1] => img10.png
    [0] => img12.png
)

For more information see: Martin Pool's » Natural Order String Comparison page.

Example #2 natsort() examples demonstrating potential gotchas

<?php
echo "Negative numbers\n";
$negative = array('-5','3','-2','0','-1000','9','1');
print_r($negative);
natsort($negative);
print_r($negative);

echo 
"Zero padding\n";
$zeros = array('09''8''10''009''011''0'); 
print_r($zeros);
natsort($zeros);
print_r($zeros);
?>

Exemplul de mai sus va afișa:

Negative numbers
Array
(
    [0] => -5
    [1] => 3
    [2] => -2
    [3] => 0
    [4] => -1000
    [5] => 9
    [6] => 1
)
Array
(
    [2] => -2
    [0] => -5
    [4] => -1000
    [3] => 0
    [6] => 1
    [1] => 3
    [5] => 9
)

Zero padding
Array
(
    [0] => 09
    [1] => 8
    [2] => 10
    [3] => 009
    [4] => 011
    [5] => 0
)
Array
(
    [5] => 0
    [1] => 8
    [3] => 009
    [0] => 09
    [2] => 10
    [4] => 011
)

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Funcții ale tablourilor (Array)
PHP Manual