方法1:使用 array_map 和serialize function array_unique_multidimensional($array) { $serialized = array_map('serialize', $array); $unique = array_unique($serialized); return array_intersect_key($array, $unique); } $multidimensionalArray = [ ['id' => 1, 'name' => 'A'], ['id' => 2...
I had a problem with array_unique and multidimensional arrays ... Maybe there's a better way to do this, but this will work for any dimensional arrays. <?php function arrayUnique($myArray) { if(!is_array($myArray)) return $myArray; foreach ($myArray as &$myvalue){ $myvalue=se...
PHP中的Array2String & String2Array 在用PHP开发时我们有时期望将一个数组(任意多维),在页面之间传递或者存入数据库。这时我们可以将Array转换为String传递或保存,取出用的时候在转换回来即可。 <?/*在Array和String类型之间转换,转换为字符串的数组可以直接在URL上传递*/ // convert a multidimensional array to ...
<?php // Define a function to filter unique values based on a specified key in a multidimensional array function unique_array($my_array, $key) { $result = array(); // Initialize an empty array to store the unique values $i = 0; // Initialize a counter $key_array = array(); //...
Remove Duplicates From Multidimensional Array array_unique in PHP Thearray_unique()function are used to remove duplicate data from given array. Syntax: array_unique(array, sorttype) There are two parameters that will be passed in thearray_unique(), first specifying an array that is required and...
Naming Keys in a Multidimensional Array in PHP Question: I structured information obtained from csv file into a multi-dimensional array using the subsequent technique: $handle = fopen("bankdata.csv", "r"); while(($data = fgetcsv($handle, 0 ,",")) !==FALSE) { ...
Deleting columns from multidimensional array Deleting rows conditionally from a DataTable Demonstrating Array of Interface Types (using runtime polymorphism) in C# dependecy walker for .Net assemblies Dependency injection for static properties Dependency Injection Generic Interface Derived Class methods need ...
<?php $age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43"); foreach($ageas$x=>$x_value) { echo"Key=". $x .", Value=". $x_value; echo""; } ?> Try it Yourself » Example Create a multidimensional array: <?php
multidimensional array to single array $array=[1=>[2,5=>[4,2],[7,8=>[3,6]],5],4];$arr=[];array_walk_recursive($array, function($k){global $arr; $arr[]=$k;});print_r($arr);OutputArray ( [0] => 2 [1] => 4 [2] => 2 [3] => 7 [4] => 3 [5] => 6 [...
This array type is so complex as you need. You can assign multiple arrays as values and/or indexes. The most common example where you face a multidimensional array, is when you parse a XML structure. How to add values to an array with PHP?