Search in 2 arrays - php

Question

I have problem with search in arrays , in 2 arrays , the first array have one structure fixed and the second send the vars from url and can have some values empty , for example
FIRST ARRAY :
The structure it's this :
id value , cat value , subcat value and country value
$ar_val="134567,dogs,food,EEUU";
The second var get from URL
$ar_url="134567,dogs,toys,EEUU";
As you can see in the second var , $ar_url i have one value no same to the first structure of $ar_val in this case toys
I want get compare the fixed structure of $ar_val and get if true or false if have same value in the same order from $ar_val
I try this :
$ar_val="134567,dogs,food,EEUU";
$ar_url="134567,dogs,toys,EEUU";
$exp_ar_val=explode(",",$ar_val);
$exp_ar_url=explode(",",$ar_url);
foreach ($exp_ar_val as $exp_ar_val2)
{
$ar_val_end[]=$exp_ar_val2;
}
foreach ($exp_ar_url as $exp_ar_url2)
{
$ar_val_end2[]=$exp_ar_url2;
}
$end_results=array_intersect($ar_val_end,$ar_val_end2);
With this I want know for example: If I search by id and for example for cat , get result positive in 2 arrays i have the same data , but if search for subcat i can´t get results because are differents in one have food and in other have toys , but with array_intersect no get this for compare
Thank´s , Regards

Answer 1

I think he wants to check if a value exists in either array. try this...
<?
function inarray($value,$array=array()){
if(in_array($value,$array)){
return true;
}else{
return false;
}
}
$ar_val=array("134567","dogs","food","EEUU");
$ar_url=array("134567","dogs","toys","EEUU");
$a = inarray("food",$ar_val);
$b = inarray("food",$ar_url);
if($a!=false and $b!=false)
echo "Found in both arrays";
elseif($a==true and $b==false)
echo "Found in first array";
elseif($a==false and $b==true)
echo "Found in second array";
else
echo "Not Found in any array";
?>

Answer 2

Try this:
$ar_val="134567,dogs,food,EEUU";
$ar_url="134567,dogs,toys,EEUU";
$arrayVal = explode(',', $ar_val);
$arrayUrl = explode(',', $ar_url);
$maxLength = max(sizeof($arrayVal), sizeof($arrayUrl));
$arrayIdsEqual = array();
$arrayIdsDifferent = array();
for ($i = 0; $i < $maxLength; $i++) {
if (isset($arrayVal[$i]) && isset($arrayUrl[$i])) {
if ($arrayVal[$i] == $arrayUrl[$i]) {
$arrayIdsEqual[] = $i;
}
else {
$arrayIdsDifferent[] = $i;
}
}
else {
//you arrive here if you have 2 arrays that don't have the same size / sme number of variables
}
}
//assuming your 2 arrays ALWAYS have the same size, you can use the following logic
if (empty($arrayIdsDifferent)) {
echo '2 arrays are the same';
}
else {
echo "Differences: \n";
foreach ($arrayIdsDifferent as $indexDifferent => $currentIdDifferent) {
$output = 'difference ' . ($indexDifferent + 1) . ': ';
$output .= 'val = ' . $arrayVal[$currentIdDifferent];
$output .= '; ';
$output .= 'url = ' . $arrayUrl[$currentIdDifferent];
echo $output;
echo "\n";
}
}
You can see this working here: http://3v4l.org/pTQns

Answer 3

You can use array_diff for this, which is perfect for comparison purposes:
<?php
$ar_val= array ("0" => "134567", "1" => "dogs", "2" => "food", "3" => "EEUU");
$ar_url= array ("0" => "134567", "1" => "dogs", "2" => "EEUU", "3" => "food");
$result = array_diff($ar_val, $ar_url);
$num = 0;
if ($result != NULL) {
echo "unique array keys: TRUE" . "\n\n";
print_r($result);
echo "\n\n";
} else {
echo "unique array keys: FALSE" . "\n\n";
}
foreach($ar_val as $key) {
if ($ar_val[$num] != $ar_url[$num]) {
echo "intersecting array key different: TRUE" . "\n> ";
print_r($ar_val[$num]);
echo "\n\n";
}
$num++;
}
?>

Answer 4

Just compare them with equal without any complicated operations.
$ar_val = "134567,dogs,food,EEUU";
$ar_url = "134567,dogs,toys,EEUU";
$exp_ar_val = explode(",", $ar_val);
$exp_ar_url = explode(",", $ar_url);
var_dump($exp_ar_val == $exp_ar_url); // false, elements does not match
$exp_ar_url = $exp_ar_val;
var_dump($exp_ar_val == $exp_ar_url); // true, all elements match
shuffle($exp_ar_url);
var_dump($exp_ar_val == $exp_ar_url); // false, different order