PHP comparing 2 arrays - php

Question

I've stuck in some certain problem, I've got two arrays which are the output of some other methods:
$firstArray = ['Johny Mao'=>'A', 'Kate Young'=>'B', 'Adam Mink'=>'C'];
$secondArray = [
['Johny Mao','A'],
['Kate Young', 'B'],
['Adam Mink', 'C']
];
How should I change these two arrays in order two compare them?
I need to know wheter they consist the same information.
Probably I should use array_diff methods but first I need to change arrays structure to be able to compar them.
Hope expressed clearly :)

Answer 1

Create a new array (or modify the second array) to key/value pairs matching the first array
$newArray = array_combine(
array_column($secondArray, 0),
array_column($secondArray, 1)
);
and then do your comparison

Answer 2

The comments are spot on. This is the developers idea.
Without using array_diff or something:
function array_are_same($firstarray,$secondarray){
foreach ($firstarray as $key => $value) {
if (!array_key_exists($key, $secondarray)
|| $secondarray[$key] !== $value){
return false;
}
return true;
}
}

Answer 3

You could do something like this, assuming you don't need to check if elements in first array aren't in second array.
function areArraysEqual($firstArray, $secondArray)
{
if(count($firstArray) != count($secondArray))
{
return false;
}
foreach($secondArray as $key => $value)
{
if(!isset($firstArray[$value[0]]) || $firstArray[$value[0]] != $value[1])
{
return false;
}
}
return true;
}
$firstArray = ['Johny Mao'=>'A', 'Kate Young'=>'B', 'Adam Mink'=>'C'];
$secondArray = [
['Johny Mao','A'],
['Kate Young', 'B'],
['Adam Mink', 'C']
];
$result = areArraysEqual($firstArray, $secondArray);
var_dump($result);
Edit:
This code below should now take into account if elements in the first array aren't in the second array.
<?php
function isValueIn2dArray(&$array, $secondDimensionKey, $value)
{
foreach($array as $key => $array2)
{
if($array2[$secondDimensionKey] == $value)
{
return true;
}
}
return false;
}
function areArraysEqual($firstArray, $secondArray)
{
if(count($firstArray) != count($secondArray))
{
return false;
}
foreach($secondArray as $key => $value)
{
if(!isset($firstArray[$value[0]]) || $firstArray[$value[0]] != $value[1])
{
return false;
}
}
foreach($firstArray as $key => $value)
{
if(!isValueIn2dArray($secondArray, 0, $key))
{
return false;
}
}
return true;
}
$firstArray = ['Johny Mao'=>'A', 'Kate Young'=>'B', 'Adam Mink'=>'C'];
$secondArray = [
['Johny Mao','A'],
['Kate Young', 'B'],
['Adam Mink', 'C']
];
$result = areArraysEqual($firstArray, $secondArray);
var_dump($result);