Compare 2 arrays and retrieve the differences using PHP - php

Question

I'm not a PHP expert but i'm trying Compare 2 arrays ( database relations and schema) in PHP, I need retrieve the differences between those 2 array, I'm using this php code
<?php
function maxEntities($rela, $db){
$maxenty = array();
$found = false;
foreach ($rela as $valor1) {
print $valor1[0] . " | ";
}
print " <br \>";
foreach ($db as $valor2) {
print $valor2[0] . " | ";
}
$maxenty = array_diff($rela[0], $db[0]);
print " <br \> <br \>";
foreach ($maxenty as $valor) {
print " " . $valor;
}
}
and this code give me this output
Sale | Customer | Sale_Fee | Sale | Location | Sale | Sale | Sale_Iten | Product | Customer | Location | Sale_Iten | Sale_Fee | Region |
Customer | Customer_Type | Fee_Type | Location | Location_Type | Period | Product | Product_Type | Region | Sale | Sale_Fee | Sale_Iten | State |
Sale Customer_Cust_Id
and the output i expect is
Period, Customer_Type, State, Location Type, Product Type and Fee Type
how i can solve my problem ?
i also tried with foreach, but give me also a wrong output
foreach ($rela as $relaV) {
foreach ($db as $dbV) {
if ($dbV[0] == $relaV[0]) {
$found = true;
}
if (!$found) {
$found = false;
$maxenty[] = $dbV[0];
}
}
}
in this case my output was
Customer
Customer_Type
Fee_Type
Location
Location_Type
Period
Product
Product_Type
Region
and Customer, Region, Location are in both arrays

Answer 1

It is not very clear, how your arrays are structured. From your code so far I guess the following structures:
$rela = array(array('Sale'), array('Customer'), array('Sale_Fee'), array('Sale'), array('Location'), array('Sale'), array('Sale'), array('Sale_Iten'), array('Product'), array('Customer'), array('Location'), array('Sale_Iten'), array('Sale_Fee'), array('Region'));
$db = array(array('Customer'), array('Customer_Type'), array('Fee_Type'), array('Location'), array('Location_Type'), array('Period'), array('Product'), array('Product_Type'), array('Region'), array('Sale'), array('Sale_Fee'), array('Sale_Iten'), array('State'));
If this is the structure of your arrays, then you can use the following code to get the difference (adopted from your foreach-approach, there may be other ways):
$maxenty = array();
foreach ($db as $dbValue) {
$found = false;
foreach ($rela as $relaValue) {
if ($relaValue[0] == $dbValue[0]) {
$found = true;
break;
}
}
if (!$found) {
$maxenty[] = $dbValue[0];
}
}
print_r($maxenty);
This will give you the $maxenty as follows:
Array
(
[0] => Customer_Type
[1] => Fee_Type
[2] => Location_Type
[3] => Period
[4] => Product_Type
[5] => State
)