<?php
$warehouse = [
['name' => 'картошка', 'weight' => 100, 'price' => 100500],
['name' => 'морковка', 'weight' => 50, 'price' => 5000],
['name' => 'лук'     , 'weight' => 16, 'price' => 215],
['name' => 'оп'      , 'weight' => 75, 'price' => 'Бесценен']
];
 
function findByName($warehouse, $name){
	foreach($warehouse as $wares){
		 if ($wares['name'] == $name){
		 	return $wares;
		 };
 
	}
}
 
$name = 'лук';
$name = findByName($warehouse, $name);
print_r ($name);

PD9waHAKJHdhcmVob3VzZSA9IFsKWyduYW1lJyA9PiAn0LrQsNGA0YLQvtGI0LrQsCcsICd3ZWlnaHQnID0+IDEwMCwgJ3ByaWNlJyA9PiAxMDA1MDBdLApbJ25hbWUnID0+ICfQvNC+0YDQutC+0LLQutCwJywgJ3dlaWdodCcgPT4gNTAsICdwcmljZScgPT4gNTAwMF0sClsnbmFtZScgPT4gJ9C70YPQuicgICAgICwgJ3dlaWdodCcgPT4gMTYsICdwcmljZScgPT4gMjE1XSwKWyduYW1lJyA9PiAn0L7QvycgICAgICAsICd3ZWlnaHQnID0+IDc1LCAncHJpY2UnID0+ICfQkdC10YHRhtC10L3QtdC9J10KXTsKCmZ1bmN0aW9uIGZpbmRCeU5hbWUoJHdhcmVob3VzZSwgJG5hbWUpewoJZm9yZWFjaCgkd2FyZWhvdXNlIGFzICR3YXJlcyl7CgkJIGlmICgkd2FyZXNbJ25hbWUnXSA9PSAkbmFtZSl7CgkJIAlyZXR1cm4gJHdhcmVzOwoJCSB9OwoKCX0KfQoKJG5hbWUgPSAn0LvRg9C6JzsKJG5hbWUgPSBmaW5kQnlOYW1lKCR3YXJlaG91c2UsICRuYW1lKTsKcHJpbnRfciAoJG5hbWUpOw==