PHP natsort() Function (original) (raw)
Last Updated : 20 Jun, 2023
The natsort() function is an inbuilt function in PHP which is used to sort an array by using a “natural order” algorithm. The natural order tells the order to be used as a normal human being would use. That is, it does not check the type of value for comparison. For example, in string representation 30 is less than 7 according to the standard sorting algorithm as 3 comes before 7 lexicographically. But in natural order 30 is greater than 7.Syntax:
bool natsort(array)
Parameters: This function accepts a single parameter $array. It is the array which natsort() function is going to sort.Return Value: It returns a boolean value i.e., TRUE on success and FALSE on failure. Below programs illustrate the natsort() function in PHP:Program 1:
PHP `
arr2=arr2 = arr2=arr1; // sorting using sort function. sort($arr1); // printing sorted element. echo "Standard sorting\n"; print_r($arr1); // sorting using natsort() function. natsort($arr2); // printing sorted element. echo "\nNatural order sorting\n"; print_r($arr2); ?>`
Output:
Standard sorting Array ( [3] => 1.jpeg [1] => 10.jpeg [0] => 12.jpeg [2] => 2.jpeg )
Natural order sorting Array ( [3] => 1.jpeg [2] => 2.jpeg [1] => 10.jpeg [0] => 12.jpeg )
Program 2:
PHP `
`
Output:
Natural order sorting Array ( [2] => gfg1.jpeg [4] => gfg2.jpeg [1] => gfg10.jpeg [0] => gfg15.jpeg [3] => gfg22.jpeg )