我有一个对象名称event我试图让其中一个名为event的属性，但我收到此错误
Undefined property: stdClass::$event
这就是我访问它的方式
echo $event->event;
当我尝试var_dump这个$event时，我得到了这个结果
object(stdClass)#198 (4) {
["event"]=>
string(8) "deferral"
["msg"]=>
object(stdClass)#462 (12) {
["ts"]=>
int(1365109999)
["subject"]=>
string(31) "This an example webhook message"
["email"]=>
string(31) "example.webhook@mandrillapp.com"
["sender"]=>
string(30) "example.sender@mandrillapp.com"
["tags"]=>
array(1) {
[0]=>
string(15) "webhook-example"
}
["opens"]=>
array(0) {
}
["clicks"]=>
array(0) {
}
["state"]=>
string(8) "deferred"
["metadata"]=>
object(stdClass)#487 (1) {
["user_id"]=>
int(111)
}
["_id"]=>
string(32) "exampleaaaaaaaaaaaaaaaaaaaaaaaaa"
["_version"]=>
string(22) "exampleaaaaaaaaaaaaaaa"
["smtp_events"]=>
array(1) {
[0]=>
object(stdClass)#483 (6) {
["destination_ip"]=>
string(9) "127.0.0.1"
["diag"]=>
string(51) "451 4.3.5 Temporarily unavailable, try again later."
["source_ip"]=>
string(9) "127.0.0.1"
["ts"]=>
int(1365111111)
["type"]=>
string(8) "deferred"
["size"]=>
int(0)
}
}
}
["_id"]=>
string(32) "exampleaaaaaaaaaaaaaaaaaaaaaaaaa"
["ts"]=>
int(1433587083)
}
这就是我创建$data数组然后使用foreach循环将其迭代为$event
$data = array (
'mandrill_events' => '[{"event":"deferral","msg":{"ts":1365109999,"subject":"This an example webhook message","email":"example.webhook@mandrillapp.com","sender":"example.sender@mandrillapp.com","tags":["webhook-example"],"opens":[],"clicks":[],"state":"deferred","metadata":{"user_id":111},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa","_version":"exampleaaaaaaaaaaaaaaa","smtp_events":[{"destination_ip":"127.0.0.1","diag":"451 4.3.5 Temporarily unavailable, try again later.","source_ip":"127.0.0.1","ts":1365111111,"type":"deferred","size":0}]},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa","ts":1433587083},{"event":"hard_bounce","msg":{"ts":1365109999,"subject":"This an example webhook message","email":"example.webhook@mandrillapp.com","sender":"example.sender@mandrillapp.com","tags":["webhook-example"],"state":"bounced","metadata":{"user_id":111},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa1","_version":"exampleaaaaaaaaaaaaaaa","bounce_description":"bad_mailbox","bgtools_code":10,"diag":"smtp;550 5.1.1 The email account that you tried to reach does not exist. Please try double-checking the recipient\'s email address for typos or unnecessary spaces."},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa1","ts":1433587083},{"event":"soft_bounce","msg":{"ts":1365109999,"subject":"This an example webhook message","email":"example.webhook@mandrillapp.com","sender":"example.sender@mandrillapp.com","tags":["webhook-example"],"state":"soft-bounced","metadata":{"user_id":111},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa2","_version":"exampleaaaaaaaaaaaaaaa","bounce_description":"mailbox_full","bgtools_code":22,"diag":"smtp;552 5.2.2 Over Quota"},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa2","ts":1433587083},{"event":"open","msg":{"ts":1365109999,"subject":"This an example webhook message","email":"example.webhook@mandrillapp.com","sender":"example.sender@mandrillapp.com","tags":["webhook-example"],"opens":[{"ts":1365111111}],"clicks":[{"ts":1365111111,"url":"http:\\/\\/mandrill.com"}],"state":"sent","metadata":{"user_id":111},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa3","_version":"exampleaaaaaaaaaaaaaaa"},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa3","ip":"127.0.0.1","location":{"country_short":"US","country":"United States","region":"Oklahoma","city":"Oklahoma City","latitude":35.4675598145,"longitude":-97.5164337158,"postal_code":"73101","timezone":"-05:00"},"user_agent":"Mozilla\\/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.8) Gecko\\/20100317 Postbox\\/1.1.3","user_agent_parsed":{"type":"Email Client","ua_family":"Postbox","ua_name":"Postbox 1.1.3","ua_version":"1.1.3","ua_url":"http:\\/\\/www.postbox-inc.com\\/","ua_company":"Postbox, Inc.","ua_company_url":"http:\\/\\/www.postbox-inc.com\\/","ua_icon":"http:\\/\\/cdn.mandrill.com\\/img\\/email-client-icons\\/postbox.png","os_family":"OS X","os_name":"OS X 10.6 Snow Leopard","os_url":"http:\\/\\/www.apple.com\\/osx\\/","os_company":"Apple Computer, Inc.","os_company_url":"http:\\/\\/www.apple.com\\/","os_icon":"http:\\/\\/cdn.mandrill.com\\/img\\/email-client-icons\\/macosx.png","mobile":false},"ts":1433587083},{"event":"click","msg":{"ts":1365109999,"subject":"This an example webhook message","email":"example.webhook@mandrillapp.com","sender":"example.sender@mandrillapp.com","tags":["webhook-example"],"opens":[{"ts":1365111111}],"clicks":[{"ts":1365111111,"url":"http:\\/\\/mandrill.com"}],"state":"sent","metadata":{"user_id":111},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa4","_version":"exampleaaaaaaaaaaaaaaa"},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa4","ip":"127.0.0.1","location":{"country_short":"US","country":"United States","region":"Oklahoma","city":"Oklahoma City","latitude":35.4675598145,"longitude":-97.5164337158,"postal_code":"73101","timezone":"-05:00"},"user_agent":"Mozilla\\/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.8) Gecko\\/20100317 Postbox\\/1.1.3","user_agent_parsed":{"type":"Email Client","ua_family":"Postbox","ua_name":"Postbox 1.1.3","ua_version":"1.1.3","ua_url":"http:\\/\\/www.postbox-inc.com\\/","ua_company":"Postbox, Inc.","ua_company_url":"http:\\/\\/www.postbox-inc.com\\/","ua_icon":"http:\\/\\/cdn.mandrill.com\\/img\\/email-client-icons\\/postbox.png","os_family":"OS X","os_name":"OS X 10.6 Snow Leopard","os_url":"http:\\/\\/www.apple.com\\/osx\\/","os_company":"Apple Computer, Inc.","os_company_url":"http:\\/\\/www.apple.com\\/","os_icon":"http:\\/\\/cdn.mandrill.com\\/img\\/email-client-icons\\/macosx.png","mobile":false},"url":"http:\\/\\/mandrill.com","ts":1433587083},{"event":"spam","msg":{"ts":1365109999,"subject":"This an example webhook message","email":"example.webhook@mandrillapp.com","sender":"example.sender@mandrillapp.com","tags":["webhook-example"],"opens":[{"ts":1365111111}],"clicks":[{"ts":1365111111,"url":"http:\\/\\/mandrill.com"}],"state":"sent","metadata":{"user_id":111},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa5","_version":"exampleaaaaaaaaaaaaaaa"},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa5","ts":1433587083},{"event":"unsub","msg":{"ts":1365109999,"subject":"This an example webhook message","email":"example.webhook@mandrillapp.com","sender":"example.sender@mandrillapp.com","tags":["webhook-example"],"opens":[{"ts":1365111111}],"clicks":[{"ts":1365111111,"url":"http:\\/\\/mandrill.com"}],"state":"sent","metadata":{"user_id":111},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa6","_version":"exampleaaaaaaaaaaaaaaa"},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa6","ts":1433587083},{"event":"reject","msg":{"ts":1365109999,"subject":"This an example webhook message","email":"example.webhook@mandrillapp.com","sender":"example.sender@mandrillapp.com","tags":["webhook-example"],"opens":[],"clicks":[],"state":"rejected","metadata":{"user_id":111},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa7","_version":"exampleaaaaaaaaaaaaaaa"},"_id":"exampleaaaaaaaaaaaaaaaaaaaaaaaaa7","ts":1433587083},{"type":"blacklist","action":"add","reject":{"reason":"hard-bounce","detail":"Example detail","last_event_at":"2014-02-01 12:43:56","email":"example.webhook@mandrillapp.com","created_at":"2014-01-15 11:32:19","expires_at":"2020-04-02 12:09:18","expired":false,"subaccount":"example_subaccount","sender":"example.sender@mandrillapp.com"},"ts":1433587083},{"type":"blacklist","action":"change","reject":{"reason":"hard-bounce","detail":"Example detail","last_event_at":"2014-02-01 12:43:56","email":"example.webhook@mandrillapp.com","created_at":"2014-01-15 11:32:19","expires_at":"2020-04-02 12:09:18","expired":false,"subaccount":"example_subaccount","sender":"example.sender@mandrillapp.com"},"ts":1433587083},{"type":"blacklist","action":"remove","reject":{"reason":"hard-bounce","detail":"Example detail","last_event_at":"2014-02-01 12:43:56","email":"example.webhook@mandrillapp.com","created_at":"2014-01-15 11:32:19","expires_at":"2020-04-02 12:09:18","expired":false,"subaccount":"example_subaccount","sender":"example.sender@mandrillapp.com"},"ts":1433587083},{"type":"whitelist","action":"add","entry":{"email":"example.webhook@mandrillapp.com","detail":"example details","created_at":"2014-01-15 12:03:19"},"ts":1433587083},{"type":"whitelist","action":"remove","entry":{"email":"example.webhook@mandrillapp.com","detail":"example details","created_at":"2014-01-15 12:03:19"},"ts":1433587083}]',
);
$data = json_decode($data['mandrill_events']);
喜欢这个
foreach ($data as $event) {
echo $event->event;
}
这里有什么问题？
答案 0 :(得分：2)
这里的问题是，并非所有从JSON字符串解码的对象都具有event属性。所以对于那些没有的，你得到未定义的属性通知。您可以使用property_exists函数检查对象是否具有属性，如下所示：
foreach ($data as $event)
{
if (property_exists($event, 'event'))
echo $event->event;
}
这将避免未定义的属性通知，但如果您想处理发生这种情况的情况，可以在条件中添加else块。