PHP: how to find a number that appears only once in an array [find a specific element]

PHP: how to find a number that appears only once in an array [find a specific element]

This example describes how to find only one digit in an array in PHP. We will share this with you for your reference. The details are as follows:

Problem:

In an integer array, all numbers except two appear twice. Write a program to find the numbers that appear only once.

The implementation code is as follows:

<? Phpfunction FindNumsAppearOnce ($ array) {// write code here // return list, such as [a, B], here, AB is the two digits that appear once $ count = array_count_values ($ array); foreach ($ count as $ k = >$ v) {if ($ v = 1) {$ new_arr [] = $ k ;}return $ new_arr ;}$ arr = array ('22', '44', '66', '11 ', '11', '44', '33'); print_r (FindNumsAppearOnce ($ arr ));

Output:

Array ([0] => 22 [1] => 66 [2] => 33)