Get perfect match array using different variables in php - php

Question

I have three variables
$region ='APJ';
$sub_region = 'India';
$country = 'India'
and i have multiple arrays like
Array
(
[0] => Array
(
[region] => APJ
[subregion] => India
[country] =>
)
[1] => Array
(
[region] => APJ
[subregion] =>china
[country] =>
)
[2] => Array
(
[region] => WW
[subregion] =>france
[country] => France
)
[3] => Array
(
[region] => EMEA
[subregion] =>mema
[country] => France
)
)
I need to find the perfect match array for using these three variables.
In the above example we have 4 arrays with different values.
First array matching region and sub region level also.
Second array only region level is matching.
All other are not matching even one value also.
So i choose the first array as result.
So using php how i find the perfect matching array in this kind of scenario?

Answer 1

Concept: "Ranking"
Create a comparison array with the same structure as the definiton arrays
Loop through all definitions and …
Count matches (rank) for each definition (loop through comparison array).
Store the mathing level (rank) in the definition array itself (additional key: _level).
Keep the index of the highest ranked definition array.
Result: The index of the definition array with the highest rank ($highestlevel).(= The first definition with the highest ranking)
Code
<?php
$defs = array ( // Definitions
array(
'region' => 'APJ', // to be compared
'country' => '', // to be compared
'typeofrec' => 1,
'TotalAllocations' => 0,
'TotalTransfersOut' => 0,
'subregion' => 'India', // to be compared
'TotalTransfersIn' => 0,
'StartOfAllocation' => 0,
'ApprovedActivities' => 10,
'AvailableBalance' => -10,
'Exposure' => 0,
),
array(
'region' => 'APJ',
'subregion' => 'china ',
'country' => '',
),
array(
'region' => 'WW',
'subregion' => 'france',
'country' => 'France',
),
array(
'region' => 'EMEA',
'subregion' => 'mema',
'country' => 'France',
),
);
// Comparison array
// Instead of ...
// $region ='APJ';
// $sub_region = 'India';
// $country = 'India'
$testarray = array( // Comparison array
'region' => 'APJ',
'subregion' => 'India',
'country' => 'India',
);
// --------------------------------------------------------------------------
$highestlevel = 0; // Index of highest ranked definition
foreach ($defs as $ix => $def) { // Loop through all definitions
$defs[$ix]['_level'] = 0; // Add new entry to array
foreach($testarray as $key => $value) { // Loop throug comparison values
// Increment ranking level if matched
if (trim($def[$key]) == trim($value)) $defs[$ix]['_level']++;
// Variant "case ignored":
// if (strtolower(trim($def[$key])) == strtolower(trim($value))) $defs[$ix]['_level']++;
}
// Keep index of highest ranked
if (!isset($defs[$highestlevel]['_level']) || $defs[$highestlevel]['_level'] < $defs[$ix]['_level']) $highestlevel = $ix;
}
// --------------------------------------------------------------------------
// Display the result
echo '<h3>Result</h3><pre>'; var_dump($defs[$highestlevel]); echo '</pre>';
Main advantages:
Flexibility:The code only assumes array structures. Neither key names nor element types nor fixed array lengths are assumed. So it Works with different values and array lengths.
Compactness.
Result
array(12) {
["region"]=> string(3) "APJ"
["country"]=> string(0) ""
["typeofrec"]=> int(1)
["TotalAllocations"]=> int(0)
["TotalTransfersOut"]=> int(0)
["subregion"]=> string(5) "India"
["TotalTransfersIn"]=> int(0)
["StartOfAllocation"]=> int(0)
["ApprovedActivities"]=> int(10)
["AvailableBalance"]=> int(-10)
["Exposure"]=> int(0)
["_level"]=> int(2)
}

Answer 2

Please try this
$region ='APJ';
$sub_region = 'India';
$country = 'India'
$ret ="";
foreach($yourarr as $key=> $subArr){
/* If region,subregion & country values matches given data return mached array value */
if($subArr['region'] == $region && $subArr['subregion'] == $sub_region && $subArr['country'] == $country){
$matArr = $arr[$key];
break;
}
/* Else If any of the 2 matches with given data return the specific array value */
else if(
($subArr['region'] == $region && $subArr['subregion']) ||
($subArr['subregion'] == $sub_region && $subArr['country'] == $country ) ||
($subArr['region'] == $region && $subArr['country'] == $country )
){
$matArr = $arr[$key];
break;
}
/* Else any of the value matches return the specific array value*/
else if($subArr['region'] == $region || $subArr['subregion'] == $sub_region || $subArr['country'] == $country){
$matArr = $arr[$key];
break;
}
}
echo "Matching Array Is:";
print_r($matArr);

Answer 3

for($i=0;$i<count($arr);$i++)
{
if(($arr[$i]['region']==$region) && ($arr[$i]['subregion']==$sub_region) && ($arr[$i]['country']==$country) )
{
echo "3"."index".$i;
}
elseif( (($arr[$i]['region']==$region) && ($arr[$i]['subregion']==$sub_region)) || ( ($arr[$i]['subregion']==$sub_region) && ($arr[$i]['country']==$country) ) || ( ($arr[$i]['region']==$region) && ($arr[$i]['country']==$country) ) )
{
echo "2"."index".$i;
}
elseif(($arr[$i]['region']==$region) || ($arr[$i]['subregion']==$sub_region) || ($arr[$i]['country']==$country))
{
echo "1"."index".$i;
}
else
{
echo "not found";
}
}
$arr is your array.
in above code it first search for perfect match means all case are matche
in second case it match for two
in third case it match for atleast one
3 is the top priority and get the index value