JsonPath

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 get("$..book[?(@.isbn)].category");
   $res1 = $store->get("$..book");
   $res2=$store->get('$.store.book[*]');
  
    //$res = $store->get("$..book[?(@.isbn)].category", true); // You can set true to get only unique results
    var_dump($res2[0]['title']);  



XPath JSONPath Result
/store/book/author $.store.book[*].author the authors of all books in the store
//author $..author all authors
/store/* $.store.* all things in store, which are some books and a red bicycle.
/store//price $.store..price the price of everything in the store.
//book[3] $..book[2] the third book
//book[last()] $..book[(@.length-1)]
$..book[-1:]
the last book in order.
//book[position()<3] $..book[0,1]
$..book[:2]
the first two books
//book[isbn] $..book[?(@.isbn)] filter all books with isbn number
//book[price<10] $..book[?(@.price<10)] filter all books cheapier than 10
//* $..* all Elements in XML document. All members of JSON structure.

参考

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