natsort

Definition and usage

natsort() function uses the "natural sort" algorithm to sort the array. Key values ​​retain their original key names.

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

Example

Sort the array:

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

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

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

Try it yourself

grammar

 natsort ( array )

natsort() function uses a natural order algorithm to sort elements in a given array.

natsort() function implements "natural sorting", that is, the sorting method of numbers from 1 to 9, and the sorting method of letters from a to z, the shorter one takes priority. The index of the array remains associated with the unit value.

If successful, the function returns TRUE, otherwise FALSE.