至尊宝的传说
您的 JSON 存在一些问题,所以我已经更正了这些问题,主要问题是您使用in_array()它只是告诉您它在数组中而不是在哪里。因此,在第一个版本中,我将array_search()其更改为,然后告诉您它在哪里。$flav = $_GET['flav'];$json = '[{ "flavor": "chocolate", "type": "hard", "instock": true}, { "flavor": "vanilla", "type": "hard", "instock": false}, { "flavor": "strawberry", "type" : "soft", "instock": true}, { "flavor": "mint", "type": "hard", "instock": true}]';$decode = json_decode($json);if(($key = array_search($flav, array_column($decode, 'flavor'))) !== false) { print "flavor - ". $decode[$key]->flavor.PHP_EOL . "type - ". $decode[$key]->type.PHP_EOL . "instock - ". $decode[$key]->instock.PHP_EOL;} else { print 'Invalid flavor';}我还完成了第二个版本,它使用作为索引的风味重新索引数组,因此您可以直接访问它...// Decode to an array$decode = json_decode($json, true);// Create a new version of the array indexed by the flavor$decode = array_column($decode, null, "flavor");// Check if it is in the arrayif ( isset ($decode[$flav]) ){ // Directly output the data print "flavor - ". $decode[$flav]["flavor"].PHP_EOL . "type - ". $decode[$flav]["type"].PHP_EOL . "instock - ". $decode[$flav]["instock"].PHP_EOL;} else { print 'Invalid flavor';}