Issue when requesting create segments API v3 through PHP wrapper - php

Question

I have test-driving for Mailchimp API v3 using your PHP wrapper. It's working great for me But when I'm creating a request using POST for "Create Segment" getting an error (attach screenshot):
Request Code is (through associative array) -
$api_key = "xxxxxxxxxxxxxxxx-us11";
$list_id = "1xx2xx3xx4xx";
$MailChimp = new MailChimp($api_key);
$result = $MailChimp->post('lists/' . $list_id . '/segments', array('name' => 'Testing Data',
'options' => array('match' => 'all',
'conditions' => array('field' => 'type', 'op' => 'is', 'value' => 'Testing'))
));
This request call returning following error -
array (size=2) 'field' => string 'options.conditions' (length=18)
'message' => string 'Schema describes array, object found instead'
(length=44)
I will also tried to create Request (through associative array) -
Method 1:
$api_key = "xxxxxxxxxxxxxxxx-us11";
$list_id = "1xx2xx3xx4xx";
$MailChimp = new MailChimp($api_key);
$result = $MailChimp->post('lists/' . $list_id . '/segments', array('name' => 'Testing Data',
'options' => array('match' => 'all',
'conditions' => array(array('field' => 'type', 'op' => 'is', 'value' => 'Testing')))
));
Method 2:
$api_key = "xxxxxxxxxxxxxxxx-us11";
$list_id = "1xx2xx3xx4xx";
$MailChimp = new MailChimp($api_key);
$result = $MailChimp->post('lists/' . $list_id . '/segments', array('name' => 'Testing Data 4',
'options' => array('match' => 'all',
'conditions' => array(array('field' => 'type'), array('op' => 'is'), array('value' => 'Testing')))
));
Both method will create segment on mailchimp account but not have any conditions. See screenshot -
How to override this problem?

Answer 1

You are missing the condition_type param. It should be selected from the list provided by MailChimp in the endpoint documentation.
For example, IF the field "type" from your MailChimp list is a text field you should use 'condition_type': 'TextMerge'. In this case, conditions should have the following format:
[
{
'condition_type': 'TextMerge',
'field': 'type',
'op': 'is',
'value': 'Testing'
}
]
However, MailChimp MAY have a bug in this endpoint, since TextMerge works only on the EMAIL field. I have also stumbled upon this problem recently:
Mailchimp api v3 - can't create segment based on a TEXT merge field
https://github.com/drewm/mailchimp-api/issues/160