如何解析这种json数组

Question

I have a json array like blew :

    {
    "0": {
        "kind": "mammal",
        "name": "Pussy the Cat",
        "weight": "12kg",
        "age": "5"
    },
    "1": {
        "kind": "mammal",
        "name": "Roxy the Dog",
        "weight": "25kg",
        "age": "8"
    },
    "2": {
        "kind": "fish",
        "name": "Piranha the Fish",
        "weight": "1kg",
        "age": "1"
    },
    "3": {
        "kind": "bird",
        "name": "Einstein the Parrot",
        "weight": "0.5kg",
        "age": "4"
    }
}

i removed an element 'Piranha the Fish' With (UNSET) My json code changed to blow:

{
    "0": {
        "kind": "mammal",
        "name": "Pussy the Cat",
        "weight": "12kg",
        "age": "5"
    },
    "1": {
        "kind": "mammal",
        "name": "Roxy the Dog",
        "weight": "25kg",
        "age": "8"
    },
    "3": {
        "kind": "bird",
        "name": "Einstein the Parrot",
        "weight": "0.5kg",
        "age": "4"
    }
}

when I remove element the counter of the element change to 0,1,3 so now i can't to have full access in my json elements

I want echo value with this code :

for ($i = 0; $i < $JsonCount - 1; $i++) {
    echo "Name :";
    echo $json_cod[$i]['name'];
    echo "<br/>";
    echo "Age :";
    echo $json_cod[$i]['age'];
    echo "<br/>";
}

out put :

Name :Pussy the Cat
Age :5
Name :Roxy the Dog
Age :8

Answer 1

Try using foreach .

foreach ($json_cod as $item) {
  echo "Name :";echo $item['name'];echo "<br/>";
  echo "Age :";echo $item['age'];echo "<br/>";
}

Answer 2

如果要使用代码进行回显，则在从数组中删除值后，使用$newarray=array_values($oldarray)重新索引数组。

Answer 3

That is because unset() remove the value along with the key/index from the array and left it as it is,ie it does not rearrange the key/index.

If you want to rearrange key the use array_slice() instead See array_slice . and you will get what you want. You will be able to do

for($i=0; $i <$JsonCount-1 ; $i++)
{
    echo "Name :";echo $json_cod[$i]['name'];echo "<br/>";
    echo "Age :";echo $json_cod[$i]['age'];echo "<br/>";
}