how to apply array_diff with php and sql - php

Question

Hi im unable to apply array_diff() for when user edits the stockroom detail to replace with the new result.
Here is the edit function where i call out all the variables via sql.
function einv_editStockrm($srid,$code,$name,$desc,$remark,$cat)
{
//connect to database
base_connectDatabase();
$User = base_getUserDetail($_SESSION['uID']);
$Stockroom = einv_getStockrmDetail($srid);
base_executeSQL("UPDATE einv_stockroom
SET einv_stockrm_code='" . $code . "',
einv_stockrm_name='" . $name . "',
einv_stockrm_desc='" . $desc . "',
einv_stockrm_remark='" . $remark . "',
einv_stockrm_cat = '" . $cat . "'
WHERE einv_stockrm_id=" . $srid . "");
base_addTransactionLog('Manage Stock Room', 'Edit',
"
Stock Room Code = " . $code . " ||
Stock Room Name = " . $name . " ||
Stock Room Description = " . $desc . " ||
Stock Room Remark = " . $remark . " ||
Stock Room Category = " . $cat . "
");
Here is the array_diff() function. There may be unnecessary calling and/or lack of coding..not too sure. This set of codings result in no output. The server basically crashes. Any help on this?
//oldsr is existing stockroom data
//newsr is new stockroom data through edit function
//resultsr is the end result
<?php
$StockroomGetAllDetails = array();
$arr2 = einv_getStockrmDetailFromCode($stockroomCode);
$codearr = explode(",", $arr2['einv_stockrm_code']);
$oldsr = array($codearr);
$newsr = array($codearr);
$resultsr = array_diff($newsr, $oldsr);
if(!count(array_diff($oldsr, $newsr)) && !count(array_diff($newsr, $oldsr))) {
// Arrays are equal
} else {
// Array values are different
echo $resultsr;
}
?>
This code is for redirect.
//go to stock room page
echo '<script type="text/javascript">' . "\n";
echo 'window.location="../einventory/view_stockrm.php?id='. $srid .'";';
echo '</script>';
//close the database
base_closeDatabase();
}

Answer 1

This set of codes able to display the new datas added and removed accordingly :)
$oldCat = $Stockroom["einv_stockrm_cat"];
$oldCatArr = explode(",",$oldCat);
$newCatArr = explode(",",$cat);
//Debugging
//print_r($oldCatArr);
//print_r($newCatArr);
$resultCatAdd = array_diff($newCatArr, $oldCatArr);
$resultCatRemove = array_diff($oldCatArr, $newCatArr);
//Debugging
print_r($resultCatAdd);
print_r($resultCatRemove);