PHP std::Class check if attribute exists - php

Question

I am using Twitter Search API and it returs an array of objects. I have to check for each object if it contains ['media'] array. Below is one of the objects with media attribute.
object(stdClass)#56 (4) {
["hashtags"]=>
array(2) {
[0]=>
object(stdClass)#57 (2) {
["text"]=>
string(9) "katyperry"
["indices"]=>
array(2) {
[0]=>
int(62)
[1]=>
int(72)
}
}
[1]=>
object(stdClass)#58 (2) {
["text"]=>
string(8) "katycats"
["indices"]=>
array(2) {
[0]=>
int(73)
[1]=>
int(82)
}
}
}
["urls"]=>
array(0) {
}
["user_mentions"]=>
array(1) {
[0]=>
object(stdClass)#59 (5) {
["screen_name"]=>
string(13) "perfkatyperry"
["name"]=>
string(7) "KatyCat"
["id"]=>
int(611836599)
["id_str"]=>
string(9) "611836599"
["indices"]=>
array(2) {
[0]=>
int(3)
[1]=>
int(17)
}
}
}
["media"]=>
array(1) {
[0]=>
object(stdClass)#60 (10) {
["id"]=>
int(325747221490434048)
["id_str"]=>
string(18) "325747221490434048"
["indices"]=>
array(2) {
[0]=>
int(83)
[1]=>
int(105)
}
["media_url"]=>
string(46) "http://pbs.twimg.com/media/BIVJXz-CAAAHQ8M.jpg"
["media_url_https"]=>
string(47) "https://pbs.twimg.com/media/BIVJXz-CAAAHQ8M.jpg"
["url"]=>
string(22) "http://t.co/RYgQ8Srze5"
["display_url"]=>
string(26) "pic.twitter.com/RYgQ8Srze5"
["expanded_url"]=>
string(66) "http://twitter.com/perfkatyperry/status/325747221486239744/photo/1"
["type"]=>
string(5) "photo"
["sizes"]=>
object(stdClass)#61 (5) {
["medium"]=>
object(stdClass)#62 (3) {
["w"]=>
int(600)
["h"]=>
int(600)
["resize"]=>
string(3) "fit"
}
["thumb"]=>
object(stdClass)#63 (3) {
["w"]=>
int(150)
["h"]=>
int(150)
["resize"]=>
string(4) "crop"
}
["large"]=>
object(stdClass)#64 (3) {
["w"]=>
int(1024)
["h"]=>
int(1024)
["resize"]=>
string(3) "fit"
}
["small"]=>
object(stdClass)#65 (3) {
["w"]=>
int(340)
["h"]=>
int(340)
["resize"]=>
string(3) "fit"
}
["orig"]=>
object(stdClass)#66 (3) {
["w"]=>
int(1024)
["h"]=>
int(1024)
["resize"]=>
string(3) "fit"
}
}
}
}
}
How can i do that?
Thanks!

Answer 1

Use a loop + property_exists function:
foreach($myArray as $obj)
{
if(!property_exists($obj, 'media') || !is_array($obj->media))
{
echo("property 'media' does not exist in $obj");
// throw exception, fill in default value for media array, set variable, whatever.
}
}