Search associative array of arrays. How? - php

Question

My question is how can I search an array built this way? Basically there may be a need to repeat the key and this is what I got so far to maybe solve this. If the price is the same for 2 different items I cannot have 2 keys with the same value.
Please feel free to improve on array layout.
$price_list = array(
1 => array("9.99", "EA_WTRESRVD"),
2 => array("9.99", "EA_WTRESRV")
);

Answer 1

Provided there will never be any duplication of the second column, you can do this:
$search = "EA_WTRESRVD"; //value to search for
$price_list = array(
1 => array("9.99", "EA_WTRESRVD"),
2 => array("9.99", "EA_WTRESRV")
);
$array = array_column($price_list, 0, 1);
echo $array[$search];

Answer 2

I would suggest that if you have a unique product code (SKU), you should use this to index your array.
$products = [
'EA_WTRESRVD' => [
'name' => '...',
'price' => 9.99,
// ...
],
'EA_WTRESRV' => [
'name' => '...',
'price' => 9.99,
// ...
],
];
Then you can access the price of any product by it's SKU.
$price = $products['EA_WTRESRV']['price'];

Answer 3

Here's one way:
<?php
$price_list = [ 1 => array("9.99", "EA_WTRESRVD"),
2 => array("9.99", "EA_WTRESRV")];
$search = "EA_WTRESRV";
foreach ($price_list as $arr) {
if (in_array( $search, $arr )) {
echo $search;
}
}
The foreach iterates over the multidimensional array whose elements are each arrays. Each array is inspected by in_array() for the search term.
However, this is not the only way. If you wish to avoid in_array(), you could also code as follows:
<?php
$price_list = [ 1 => array("9.99", "EA_WTRESRVD"),
2 => array("9.99", "EA_WTRESRV")];
$search = "EA_WTRESRV";
$len = strlen($search);
foreach ($price_list as $arr) {
$val = array_values($arr);
foreach($val as $v) {
if ( ( strpos( $v,$search )) !== false) {
if ( strlen($v) == $len) {
echo "$search is in the price list.\n";
}
}
}
}