Two ways to get duplicate data in an array in php_PHP Tutorial

(1) Use the functions provided by php, array_unique and array_diff_assoc to achieve

Copy code The code is as follows:

<?php
function FetchRepeatMemberInArray($array) {
/ / Get an array with duplicate data removed
$unique_arr = array_unique ( $array );
// Get an array with duplicate data
$repeat_arr = array_diff_assoc ( $array, $unique_arr );
return $repeat_arr ;
}

// Test case
$array = array (
                                                                                                                    ,
'orange',
'orange'
);
$repeat_arr = FetchRepeatMemberInArray ( $array );
print_r ( $repeat_arr );
?>



(2) Write your own function to implement this function, using two for loops

Copy code

The code is as follows:<?php

function FetchRepeatMemberInArray($array) {

$ len = count ( $array );
for($i = 0; $i < $len; $i ++) {
for($j = $i + 1; $j < $len ; $j ++) {
if ($array [$i] == $array [$j]) {
$repeat_arr [] = $array [$i];
break;
 ' iphone',
'miui',
'apple',
'orange',
'orange'
);
$repeat_arr = FetchRepeatMemberInArray ( $array );
print_r ( $repeat_arr );
?>






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TechArticle

(1) Use the functions provided by php, array_unique and array_diff_assoc to implement the copy code. The code is as follows: ?php function FetchRepeatMemberInArray( $array) { // Get the number with duplicate data removed...