The natcasesort() 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. Also, the natcasesort() function is case insensitive.
bool natcasesort($array )
Parameters: This function accepts a single parameter $array. It is the array which natcasesort() 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 natcasesort() function in PHP:
Standard sorting: Array (  => Gfg12.jpeg  => Gfg2.jpeg  => gfg1.jpeg  => gfg10.jpeg ) Natural order case insensitve: Array (  => gfg1.jpeg  => Gfg2.jpeg  => gfg10.jpeg  => Gfg12.jpeg )
Array (  => Gfg1.jpeg  => Gfg2.jpeg  => gfg10.jpeg  => Gfg15.jpeg  => gfg22.jpeg )