I am trying to decode a JSON string into an array but i get the following error.
Fatal error: Cannot use object of type stdClass as array in C:\wamp\www\temp\asklaila.php on line 6
Here is the code:
<?php
$json_string = 'http://www.domain.com/jsondata.json';
$jsondata = file_get_contents($json_string);
$obj = json_decode($jsondata);
print_r($obj['Result']);
?>
$ob->Result
instead.
As per the documentation, you need to specify true
as the second argument if you want an associative array instead of an object from json_decode
. This would be the code:
$result = json_decode($jsondata, true);
If you want integer
keys instead of whatever the property names are:
$result = array_values(json_decode($jsondata, true));
However, with your current decode you just access it as an object:
print_r($obj->Result);
try this
$json_string = 'http://www.domain.com/jsondata.json';
$jsondata = file_get_contents($json_string);
$obj = json_decode($jsondata,true);
echo "<pre>";
print_r($obj);
This is a late contribution, but there is a valid case for casting json_decode
with (array)
.
Consider the following:
$jsondata = '';
$arr = json_decode($jsondata, true);
foreach ($arr as $k=>$v){
echo $v; // etc.
}
If $jsondata
is ever returned as an empty string (as in my experience it often is), json_decode
will return NULL
, resulting in the error Warning: Invalid argument supplied for foreach() on line 3. You could add a line of if/then code or a ternary operator, but IMO it's cleaner to simply change line 2 to ...
$arr = (array) json_decode($jsondata,true);
... unless you are json_decode
ing millions of large arrays at once, in which case as @TCB13 points out, performance could be negatively effected.
Just in case you are working on php less then 5.2 you can use this resourse.
http://techblog.willshouse.com/2009/06/12/using-json_encode-and-json_decode-in-php4/
http://mike.teczno.com/JSON/JSON.phps
According to the PHP Documentation json_decode
function has a parameter named assoc which convert the returned objects into associative arrays
mixed json_decode ( string $json [, bool $assoc = FALSE ] )
Since assoc parameter is FALSE
by default, You have to set this value to TRUE
in order to retrieve an array.
Examine the below code for an example implication:
$json = '{"a":1,"b":2,"c":3,"d":4,"e":5}';
var_dump(json_decode($json));
var_dump(json_decode($json, true));
which outputs:
object(stdClass)#1 (5) {
["a"] => int(1)
["b"] => int(2)
["c"] => int(3)
["d"] => int(4)
["e"] => int(5)
}
array(5) {
["a"] => int(1)
["b"] => int(2)
["c"] => int(3)
["d"] => int(4)
["e"] => int(5)
}
This will also change it into an array:
<?php
print_r((array) json_decode($object));
?>
json_decode($object, true);
the true
does exactly the same, internally much faster.
json_decode
+ casting is 45% faster than running both flavours of json_decode
. On the other hand, both are so fast that unless you need literally thousands of decodings, the difference is negligible.
json_decode
support second argument, when it set to TRUE
it will return an Array
instead of stdClass Object
. Check the Manual page of json_decode
function to see all the supported arguments and its details.
For example try this:
$json_string = 'http://www.example.com/jsondata.json';
$jsondata = file_get_contents($json_string);
$obj = json_decode($jsondata, TRUE); // Set second argument as TRUE
print_r($obj['Result']); // Now this will works!
json_decode($data, true); // Returns data in array format
json_decode($data); // Returns collections
So, If want an array than you can pass the second argument as 'true' in json_decode
function.
I hope this will help you
$json_ps = '{"courseList":[
{"course":"1", "course_data1":"Computer Systems(Networks)"},
{"course":"2", "course_data2":"Audio and Music Technology"},
{"course":"3", "course_data3":"MBA Digital Marketing"}
]}';
Use Json decode function
$json_pss = json_decode($json_ps, true);
Looping over JSON array in php
foreach($json_pss['courseList'] as $pss_json)
{
echo '<br>' .$course_data1 = $pss_json['course_data1']; exit;
}
Result: Computer Systems(Networks)
in PHP json_decode convert json data into PHP associated array
For Ex: $php-array= json_decode($json-data, true); print_r($php-array);
Please try this
<?php
$json_string = 'http://www.domain.com/jsondata.json';
$jsondata = file_get_contents($json_string);
$obj = json_decode($jsondata, true);
echo "<pre>"; print_r($obj['Result']);
?>
Try like this:
$json_string = 'https://example.com/jsondata.json';
$jsondata = file_get_contents($json_string);
$obj = json_decode($jsondata);
print_r($obj->Result);
foreach($obj->Result as $value){
echo $value->id; //change accordingly
}
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