How to parse Json data in php? - php

Question

[{"name":"se","value":"test1"},{"name":"model","value":"test2"},{"name":"filter_preference","value":"test3"},{"name":"seved","value":"test4"}]
I have json, and I would like to parse it, and to get for "segment" => "test1"
and so on.
i have done this
$json2= json_encode($loadFilter);
$json2 = json_decode($json2, true);
foreach ($json2->$key as $value)
{
echo $key ."=>".$value;
}
always getting Invalid argument supplied for foreach() !!!
I am doing it WP ajax callback.

Answer 1

Your foreach syntax is wrong to access the $key.
foreach ($json2 as $key => $value) {
echo $key ."=>".$value;
}
Edit from your comments:
You didn't give the "real" format in your question, your array is contained in 'filter_preference', so you have to iterate over $json2['filter_preference'].
foreach ($json2['filter_preference'] as $key => $value) {
echo $key ."=>".$value;
}

Answer 2

you need to map key value for sub array.
try this:
foreach ($json2 as $key=>$value)
{
echo $key ."=>".$value;
}

Answer 3

One odd suggestion here:
If you want to use array for this then you can convert object to array using following code:
function objectToArray($d) {
if (is_object($d)) {
// Gets the properties of the given object
// with get_object_vars function
$d = get_object_vars($d);
}
if (is_array($d)) {
/*
* Return array converted to object
* Using __FUNCTION__ (Magic constant)
* for recursive call
*/
return array_map(__FUNCTION__, $d);
}
else {
// Return array
return $d;
}
}
$array_new = objectToArray($json2);
http://wonderphp.wordpress.com/2014/03/20/convert-object-to-array-and-vice-versa/