Php recursively calls the method to delete null element in the array. recursive array _ PHP Tutorial

Php recursively calls the method to delete null elements in the array, recursively returning the array. Php recursively calls the method to delete null element in an array. This document describes how php recursively calls the method to delete null element in an array. Share it with you for your reference. The details are as follows: php recursively calls the method to delete the null element of the array, recursively returning the array

This example describes how to recursively call php to delete null elements in an array. Share it with you for your reference. The details are as follows:

This function can delete all null elements in the array, including empty strings and empty arrays.

Function array_remove_empty ($ arr) {$ narr = array (); while (list ($ key, $ val) = each ($ arr) {if (is_array ($ val )) {$ val = array_remove_empty ($ val); // does the result array contain anything? If (count ($ val )! = 0) {// yes :-) $ narr [$ key] = $ val ;}} else {if (trim ($ val )! = "") {$ Narr [$ key] = $ val ;}} unset ($ arr); return $ narr ;}

Demo:
The code is as follows: array_remove_empty (array (1, 2, 3, '', array (), 4) => returns array (1, 2, 3, 4)

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Examples in this article describes how to recursively call php to delete null elements in an array. Share it with you for your reference. Details :...