Question

I am passing a list of numbers from a page to PHP serialized in JSON

{"items":"[1,2,3,4]"}

in my URL it is just

...&items={"items":[1,2,3,4]}

I decode this in PHP

$json = $_GET["items"];
$arr = json_decode($json, true);

I get an array

Array ( [items] => [1,2,4] )

But when I try a foreach on arr["items"] and print out each value, all I get is a single value

[1,2,4]

This is the code I am using to iterate

foreach($res["items"] as $value)
    echo $value; 

How come I am not getting something like

1
2
4

Answer 1

Look closely at your json string:

{"items":"[1,2,3,4]"}

Look closer:

“[1,2,3,4]”

You are saying that items is a string containing:

“[1,2,3,4]”

Remove the ” and you’ll be fine.