Get value from array with php/json

Question

Im trying to read a value of an ajax send jsonarray to base my filename upon but i cant seem to figure out how to read the value.

my php;

$postdata = $_POST['data'];

$jsondata = json_decode($postdata);
$myname = $jsondata->name;

$dir = 'users/'.$myname.'/desktop-'.$myname.'.json';

json array looks like this;

[{"name":"mmichel"},
 {"myicons":
    [{"icon":
       [{"name":"homepagelink","rel":"http://test.tocadovision.nl","id":"icon1","class":"icon bookmark"}]
     },
     {"icon":
       [{"name":"aboutpagelink","rel":"http://test.tocadovision.nl","id":"icon2","class":"icon bookmark"}]
    }]
}]

hope someone can tell me what im doing wrong.. must be rly easy i guess

Answer 1

由于$jsondata包含一个对象的数组，因此您需要访问分配中的数组的第一个元素：

$myname = $jsondata[0]->name;

Answer 2

Ensure you have json enabled in your php config. You can do this by doing

<?php
phpinfo();

This should output something like this which indicates json module is enabled. If you don't have this enabled, enable it.

Make sure you have the correct valid json string in $json variable and use one of the following methods.

$arr = json_decode($json, true);
print_r($arr[0]['name']);


$arr = json_decode($json);
print_r($arr[0]->name);