How to insert a row of array into another array - php

Question

Data is coming from 2 differents SQL request, so i have 2 arrays like :
FIRST ARRAY
array(6) {
[0]=>
array(2) {
["edible"]=>
string(3) "600"
["Food"]=>
string(4) "Fruit"
}
[1]=>
array(2) {
["edible"]=>
string(3) "500"
["Food"]=>
string(6) "Vegetables"
}
[2]=>
array(2) {
["edible"]=>
string(4) "1000"
["Food"]=>
string(3) "meat"
}
...
SECOND ARRAY
array(5) {
[0]=>
array(2) {
["out-of-date"]=>
string(3) "17"
["Food"]=>
string(4) "Fruit"
}
[1]=>
array(2) {
["out-of-date"]=>
string(3) "54"
["Food"]=>
string(3) "Vegetables"
}
[2]=>
array(2) {
["out-of-date"]=>
string(2) "60"
["Food"]=>
string(3) "meat"
}
...
What i would like is to merge the two arrays, but not with a function like array_merge or array_merge_recursive.
Because i would like to just add a row (key + value) like
["out-of-date"]=>
string(3) "17""
in the first array if we have the same Food (key)
output result desired :
array(6) {
[0]=>
array(3) {
["out-of-date"]=>
string(3) "17"
["edible"]=>
string(3) "600"
["Food"]=>
string(4) "Fruit"
}
...

Answer 1

You need to make a loop inside loop and verify the food key, if is equal merge the values to another array, Try this code:
<?php
$array1 = array();
$array1[] = array('food' => 'Fruit', 'edible' => '600');
$array1[] = array('food' => 'Vegetables', 'edible' => '500');
$array1[] = array('food' => 'meat', 'edible' => '700');
$array2 = array();
$array2[] = array('food' => 'Fruit', 'out-of-date' => '17');
$array2[] = array('food' => 'Vegetables', 'out-of-date' => '15');
$array_merged = array();
foreach ($array1 as $key => $value) {
$array_merged[$key] = $value;
foreach ($array2 as $ke => $val) {
if ($val['food'] == $value['food']) {
$array_merged[$key]['out-of-date'] = $val['out-of-date'];
}
}
}
print_r($array_merged);

Answer 2

I'm not sure about structure of your database table. But let's you have two tables in your MySql database:
First - edible | Food
Second - out_of_date | Food
So you can query your array by using join mysql operation. You need sql like below:
SELECT *
FROM First
LEFT JOIN Second ON First.Food=Second.Food
Also, you can use additional conditions for all tables like:
SELECT *
FROM First
LEFT JOIN Second ON First.Food=Second.Food
WHERE First.edible = 1000 AND Second.out_of_date = 10
You can find more information here: http://dev.mysql.com/doc/refman/5.7/en/join.html