Intersection of two multidimensional arrays in PHP - php

Question

I am having the following array defined:
array(
'name'=>'Blue',
'age'=>'0',
'skin'=>array(
'White Skin','Tanned Skin'
),
'eye'=>array(
'Black','Brown','Honey'
),
'personality'=>array(
'Intelligent','Warm','Trustworthy','Sweet'
),
'ocassion'=>array(
'Every day wear','Celebrations','Restaurant Dinner','Feasts','Visiting friends'
),
'hair'=>'All Colors',
'style'=>array(
'Loved to be admired','Center of attention'
),
'description'=>'Blue lens are perfect for any..'
);
and I am trying to find the number of matches, from an HTML form into this array. A possible return from the HTML form, in array format would be:
Array
(
[age] => 16
[skin] => Tanned Skin
[eye] => Brown
[personality] => Array
(
[0] => Intelligent
[1] => Warm
[2] => Trustworthy
)
[ocassion] => Weddings
[hair] => Dark Brown
[style] => Array
(
[0] => Style Queen
[1] => Testing val
)
)
I have tried iterating trough each key of the first array, but failed to achieve what I want, and also I've tried using the function array_intersect_assoc($stack,$search) but it seems it won't find the exact matches because the $search array ( second example ) has some key=>value pairs that are of type string, and it cannot match any occurrence into the first array because the value is actually an array, and not a string.
Can someone point me an idea or can let me know what's best to do over here?
I have tried a lot of things in the last 3 hours but no success.

Answer 1

Ok, so how about this.
The source data:
$demands = array(
'name'=>'Blue',
'age'=>'0',
'skin'=>array(
'White Skin','Tanned Skin'
),
'eye'=>array(
'Black','Brown','Honey'
),
'personality'=>array(
'Intelligent','Warm','Trustworthy','Sweet'
),
'ocassion'=>array(
'Every day wear','Celebrations','Restaurant Dinner','Feasts','Visiting friends'
),
'hair'=>'All Colors',
'style'=>array(
'Loved to be admired','Center of attention'
),
'description'=>'Blue lens are perfect for any..'
);
$possible_match = array(
'age'=>'16',
'skin'=>'Tanned Skin',
'eye'=>'Brown',
'personality'=>array(
'Intelligent','Warm','Trustworthy'
),
'ocassion'=>array(
'Weddings'
),
'hair'=>'Dark Brown',
'style'=>array(
'Style Queen','Testing value'
)
);
And the match-making algorithm:
$result = array();
$count_matches = 0;
// Go through all the demands
foreach ($demands as $key => $value){
// If there's a matching key in the possible match array
if (isset($possible_match[$key])){
// If there are more demanded values
if (is_array($value)){
// Let all demanded values be lowercase
$value = array_map('strtolower', $value);
// If there are more possible matching values
if (is_array($possible_match[$key])){
// Let all possibly matching values be lowercase, too
$possible_match[$key] = array_map('strtolower', $possible_match[$key]);
// And then do the intersect.
$intersect = array_intersect($value, $possible_match[$key]);
if ($intersect){
// If that intersect is not empty, add that to the resulting array
$result[$key] = $intersect;
$count_matches += count($intersect);
};
} else {
// If there's only one possible matching value, search that
// value in the demaned array
if (in_array(strtolower($possible_match[$key]), $value, true)){
// And add it to the results
$result[$key][] = strtolower($possible_match[$key]);
$count_matches++;
}
}
} else {
if (is_array($possible_match[$key])){
// If there are more possible matching values but the demand is a string,
// find that string in those possible values
$possible_match[$key] = array_map('strtolower', $possible_match[$key]);
if (in_array(strtolower($value), $possible_match[$key], true)){
// And add it to the results
$result[$key] = $value;
$count_matches++;
}
} else {
// If the demanded value is only one (= it's a string and not an array)
// and the possible match is also a string, do a lowercase compare
// + if there's a word "all" in the demanded value, pass it at all times ;D
if (strtolower($possible_match[$key]) == strtolower($value)
|| stripos($value, "all") !== false){
// And add it to the resulting array
$result[$key] = strtolower($value);
$count_matches++;
}
}
}
}
}
var_dump ($result);
var_dump ($count_matches);
There may be some opportunities for optimizing, but the basic idea should be there :)
The result:
array (size=4)
'skin' =>
array (size=1)
0 => string 'tanned skin' (length=11)
'eye' =>
array (size=1)
0 => string 'brown' (length=5)
'personality' =>
array (size=3)
0 => string 'intelligent' (length=11)
1 => string 'warm' (length=4)
2 => string 'trustworthy' (length=11)
'hair' => string 'all colors' (length=10)
Plus the count, if you'd like:
int 6