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PHP Quiz PHP CertificatePHP 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);
?>
$temp_files = array("temp15.txt","temp10.txt",
"temp1.txt","temp22.txt","temp2.txt");
sort($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
)
(
[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
)
Complete PHP Array Reference
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