Google_Service_Compute_Resource_InstanceGroupManagers
extends Google_Service_Resource
in package
The "instanceGroupManagers" collection of methods.
Typical usage is:
$computeService = new Google_Service_Compute(...);
$instanceGroupManagers = $computeService->instanceGroupManagers;
Table of Contents
- $client : Google_Client
- $methods : array<string|int, mixed>
- $resourceName : string
- $rootUrl : string
- $serviceName : string
- $servicePath : string
- $stackParameters : mixed
- __construct() : mixed
- abandonInstances() : Google_Service_Compute_Operation
- Flags the specified instances to be removed from the managed instance group.
- aggregatedList() : Google_Service_Compute_InstanceGroupManagerAggregatedList
- Retrieves the list of managed instance groups and groups them by zone.
- applyUpdatesToInstances() : Google_Service_Compute_Operation
- Applies changes to selected instances on the managed instance group. This method can be used to apply new overrides and/or new versions.
- call() : Google_Http_Request|expectedClass
- TODO: This function needs simplifying.
- createInstances() : Google_Service_Compute_Operation
- Creates instances with per-instance configs in this managed instance group.
- createRequestUri() : string
- Parse/expand request parameters and create a fully qualified request uri.
- delete() : Google_Service_Compute_Operation
- Deletes the specified managed instance group and all of the instances in that group. Note that the instance group must not belong to a backend service.
- deleteInstances() : Google_Service_Compute_Operation
- Flags the specified instances in the managed instance group for immediate deletion. The instances are also removed from any target pools of which they were a member. This method reduces the targetSize of the managed instance group by the number of instances that you delete. This operation is marked as DONE when the action is scheduled even if the instances are still being deleted. You must separately verify the status of the deleting action with the listmanagedinstances method.
- deletePerInstanceConfigs() : Google_Service_Compute_Operation
- Deletes selected per-instance configs for the managed instance group.
- get() : Google_Service_Compute_InstanceGroupManager
- Returns all of the details about the specified managed instance group. Gets a list of available managed instance groups by making a list() request.
- insert() : Google_Service_Compute_Operation
- Creates a managed instance group using the information that you specify in the request. After the group is created, instances in the group are created using the specified instance template. This operation is marked as DONE when the group is created even if the instances in the group have not yet been created. You must separately verify the status of the individual instances with the listmanagedinstances method.
- listErrors() : Google_Service_Compute_InstanceGroupManagersListErrorsResponse
- Lists all errors thrown by actions on instances for a given managed instance group. The filter and orderBy query parameters are not supported.
- listInstanceGroupManagers() : Google_Service_Compute_InstanceGroupManagerList
- Retrieves a list of managed instance groups that are contained within the specified project and zone. (instanceGroupManagers.listInstanceGroupManagers)
- listManagedInstances() : Google_Service_Compute_InstanceGroupManagersListManagedInstancesResponse
- Lists all of the instances in the managed instance group. Each instance in the list has a currentAction, which indicates the action that the managed instance group is performing on the instance. For example, if the group is still creating an instance, the currentAction is CREATING. If a previous action failed, the list displays the errors for that failed action. The orderBy query parameter is not supported.
- listPerInstanceConfigs() : Google_Service_Compute_InstanceGroupManagersListPerInstanceConfigsResp
- Lists all of the per-instance configs defined for the managed instance group.
- patch() : Google_Service_Compute_Operation
- Updates a managed instance group using the information that you specify in the request. This operation is marked as DONE when the group is patched even if the instances in the group are still in the process of being patched. You must separately verify the status of the individual instances with the listManagedInstances method. This method supports PATCH semantics and uses the JSON merge patch format and processing rules.
- patchPerInstanceConfigs() : Google_Service_Compute_Operation
- Inserts or patches per-instance configs for the managed instance group.
- recreateInstances() : Google_Service_Compute_Operation
- Flags the specified instances in the managed instance group to be immediately recreated. The instances are deleted and recreated using the current instance template for the managed instance group. This operation is marked as DONE when the flag is set even if the instances have not yet been recreated. You must separately verify the status of the recreating action with the listmanagedinstances method.
- resize() : Google_Service_Compute_Operation
- Resizes the managed instance group. If you increase the size, the group creates new instances using the current instance template. If you decrease the size, the group deletes instances. The resize operation is marked DONE when the resize actions are scheduled even if the group has not yet added or deleted any instances. You must separately verify the status of the creating or deleting actions with the listmanagedinstances method.
- setInstanceTemplate() : Google_Service_Compute_Operation
- Specifies the instance template to use when creating new instances in this group. The templates for existing instances in the group do not change unless you recreate them. (instanceGroupManagers.setInstanceTemplate)
- setTargetPools() : Google_Service_Compute_Operation
- Modifies the target pools to which all instances in this managed instance group are assigned. The target pools automatically apply to all of the instances in the managed instance group. This operation is marked DONE when you make the request even if the instances have not yet been added to their target pools. The change might take some time to apply to all of the instances in the group depending on the size of the group.
- updatePerInstanceConfigs() : Google_Service_Compute_Operation
- Inserts or updates per-instance configs for the managed instance group.
- convertToArrayAndStripNulls() : mixed
Properties
$client
private
Google_Client
$client
$methods
private
array<string|int, mixed>
$methods
$resourceName
private
string
$resourceName
$rootUrl
private
string
$rootUrl
$serviceName
private
string
$serviceName
$servicePath
private
string
$servicePath
$stackParameters
private
mixed
$stackParameters
= array('alt' => array('type' => 'string', 'location' => 'query'), 'fields' => array('type' => 'string', 'location' => 'query'), 'trace' => array('type' => 'string', 'location' => 'query'), 'userIp' => array('type' => 'string', 'location' => 'query'), 'quotaUser' => array('type' => 'string', 'location' => 'query'), 'data' => array('type' => 'string', 'location' => 'body'), 'mimeType' => array('type' => 'string', 'location' => 'header'), 'uploadType' => array('type' => 'string', 'location' => 'query'), 'mediaUpload' => array('type' => 'complex', 'location' => 'query'), 'prettyPrint' => array('type' => 'string', 'location' => 'query'))
Methods
__construct()
public
__construct(mixed $service, mixed $serviceName, mixed $resourceName, mixed $resource) : mixed
Parameters
- $service : mixed
- $serviceName : mixed
- $resourceName : mixed
- $resource : mixed
Return values
mixed —abandonInstances()
Flags the specified instances to be removed from the managed instance group.
public
abandonInstances(string $project, string $zone, string $instanceGroupManager, Google_Service_Compute_InstanceGroupManagersAbandonInstancesRequest $postBody[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
Abandoning an instance does not delete the instance, but it does remove the instance from any target pools that are applied by the managed instance group. This method reduces the targetSize of the managed instance group by the number of instances that you abandon. This operation is marked as DONE when the action is scheduled even if the instances have not yet been removed from the group. You must separately verify the status of the abandoning action with the listmanagedinstances method.
If the group is part of a backend service that has enabled connection draining, it can take up to 60 seconds after the connection draining duration has elapsed before the VM instance is removed or deleted.
You can specify a maximum of 1000 instances with this method per request. (instanceGroupManagers.abandonInstances)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located.
- $instanceGroupManager : string
-
The name of the managed instance group.
- $postBody : Google_Service_Compute_InstanceGroupManagersAbandonInstancesRequest
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_Operation —aggregatedList()
Retrieves the list of managed instance groups and groups them by zone.
public
aggregatedList(string $project[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_InstanceGroupManagerAggregatedList
(instanceGroupManagers.aggregatedList)
Parameters
- $project : string
-
Project ID for this request.
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_InstanceGroupManagerAggregatedList —applyUpdatesToInstances()
Applies changes to selected instances on the managed instance group. This method can be used to apply new overrides and/or new versions.
public
applyUpdatesToInstances(string $project, string $zone, string $instanceGroupManager, Google_Service_Compute_InstanceGroupManagersApplyUpdatesRequest $postBody[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
(instanceGroupManagers.applyUpdatesToInstances)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located. Should conform to RFC1035.
- $instanceGroupManager : string
-
The name of the managed instance group, should conform to RFC1035.
- $postBody : Google_Service_Compute_InstanceGroupManagersApplyUpdatesRequest
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Return values
Google_Service_Compute_Operation —call()
TODO: This function needs simplifying.
public
call( $name, $arguments[, $expectedClass = null ]) : Google_Http_Request|expectedClass
Parameters
Tags
Return values
Google_Http_Request|expectedClass —createInstances()
Creates instances with per-instance configs in this managed instance group.
public
createInstances(string $project, string $zone, string $instanceGroupManager, Google_Service_Compute_InstanceGroupManagersCreateInstancesRequest $postBody[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
Instances are created using the current instance template. The create instances operation is marked DONE if the createInstances request is successful. The underlying actions take additional time. You must separately verify the status of the creating or actions with the listmanagedinstances method. (instanceGroupManagers.createInstances)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located. It should conform to RFC1035.
- $instanceGroupManager : string
-
The name of the managed instance group. It should conform to RFC1035.
- $postBody : Google_Service_Compute_InstanceGroupManagersCreateInstancesRequest
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_Operation —createRequestUri()
Parse/expand request parameters and create a fully qualified request uri.
public
createRequestUri(string $restPath, array<string|int, mixed> $params) : string
Parameters
- $restPath : string
- $params : array<string|int, mixed>
Tags
Return values
string —$requestUrl
delete()
Deletes the specified managed instance group and all of the instances in that group. Note that the instance group must not belong to a backend service.
public
delete(string $project, string $zone, string $instanceGroupManager[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
Read Deleting an instance group for more information. (instanceGroupManagers.delete)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located.
- $instanceGroupManager : string
-
The name of the managed instance group to delete.
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_Operation —deleteInstances()
Flags the specified instances in the managed instance group for immediate deletion. The instances are also removed from any target pools of which they were a member. This method reduces the targetSize of the managed instance group by the number of instances that you delete. This operation is marked as DONE when the action is scheduled even if the instances are still being deleted. You must separately verify the status of the deleting action with the listmanagedinstances method.
public
deleteInstances(string $project, string $zone, string $instanceGroupManager, Google_Service_Compute_InstanceGroupManagersDeleteInstancesRequest $postBody[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
If the group is part of a backend service that has enabled connection draining, it can take up to 60 seconds after the connection draining duration has elapsed before the VM instance is removed or deleted.
You can specify a maximum of 1000 instances with this method per request. (instanceGroupManagers.deleteInstances)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located.
- $instanceGroupManager : string
-
The name of the managed instance group.
- $postBody : Google_Service_Compute_InstanceGroupManagersDeleteInstancesRequest
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_Operation —deletePerInstanceConfigs()
Deletes selected per-instance configs for the managed instance group.
public
deletePerInstanceConfigs(string $project, string $zone, string $instanceGroupManager, Google_Service_Compute_InstanceGroupManagersDeletePerInstanceConfigsReq $postBody[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
(instanceGroupManagers.deletePerInstanceConfigs)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located. It should conform to RFC1035.
- $instanceGroupManager : string
-
The name of the managed instance group. It should conform to RFC1035.
- $postBody : Google_Service_Compute_InstanceGroupManagersDeletePerInstanceConfigsReq
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Return values
Google_Service_Compute_Operation —get()
Returns all of the details about the specified managed instance group. Gets a list of available managed instance groups by making a list() request.
public
get(string $project, string $zone, string $instanceGroupManager[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_InstanceGroupManager
(instanceGroupManagers.get)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located.
- $instanceGroupManager : string
-
The name of the managed instance group.
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Return values
Google_Service_Compute_InstanceGroupManager —insert()
Creates a managed instance group using the information that you specify in the request. After the group is created, instances in the group are created using the specified instance template. This operation is marked as DONE when the group is created even if the instances in the group have not yet been created. You must separately verify the status of the individual instances with the listmanagedinstances method.
public
insert(string $project, string $zone, Google_Service_Compute_InstanceGroupManager $postBody[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
A managed instance group can have up to 1000 VM instances per group. Please contact Cloud Support if you need an increase in this limit. (instanceGroupManagers.insert)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where you want to create the managed instance group.
- $postBody : Google_Service_Compute_InstanceGroupManager
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_Operation —listErrors()
Lists all errors thrown by actions on instances for a given managed instance group. The filter and orderBy query parameters are not supported.
public
listErrors(string $project, string $zone, string $instanceGroupManager[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_InstanceGroupManagersListErrorsResponse
(instanceGroupManagers.listErrors)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located. It should conform to RFC1035.
- $instanceGroupManager : string
-
The name of the managed instance group. It must be a string that meets the requirements in RFC1035, or an unsigned long integer: must match regexp pattern: (?:a-z?)|[1-9][0-9]{0,19}.
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_InstanceGroupManagersListErrorsResponse —listInstanceGroupManagers()
Retrieves a list of managed instance groups that are contained within the specified project and zone. (instanceGroupManagers.listInstanceGroupManagers)
public
listInstanceGroupManagers(string $project, string $zone[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_InstanceGroupManagerList
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located.
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_InstanceGroupManagerList —listManagedInstances()
Lists all of the instances in the managed instance group. Each instance in the list has a currentAction, which indicates the action that the managed instance group is performing on the instance. For example, if the group is still creating an instance, the currentAction is CREATING. If a previous action failed, the list displays the errors for that failed action. The orderBy query parameter is not supported.
public
listManagedInstances(string $project, string $zone, string $instanceGroupManager[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_InstanceGroupManagersListManagedInstancesResponse
(instanceGroupManagers.listManagedInstances)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located.
- $instanceGroupManager : string
-
The name of the managed instance group.
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_InstanceGroupManagersListManagedInstancesResponse —listPerInstanceConfigs()
Lists all of the per-instance configs defined for the managed instance group.
public
listPerInstanceConfigs(string $project, string $zone, string $instanceGroupManager[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_InstanceGroupManagersListPerInstanceConfigsResp
The orderBy query parameter is not supported. (instanceGroupManagers.listPerInstanceConfigs)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located. It should conform to RFC1035.
- $instanceGroupManager : string
-
The name of the managed instance group. It should conform to RFC1035.
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_InstanceGroupManagersListPerInstanceConfigsResp —patch()
Updates a managed instance group using the information that you specify in the request. This operation is marked as DONE when the group is patched even if the instances in the group are still in the process of being patched. You must separately verify the status of the individual instances with the listManagedInstances method. This method supports PATCH semantics and uses the JSON merge patch format and processing rules.
public
patch(string $project, string $zone, string $instanceGroupManager, Google_Service_Compute_InstanceGroupManager $postBody[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
(instanceGroupManagers.patch)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where you want to create the managed instance group.
- $instanceGroupManager : string
-
The name of the instance group manager.
- $postBody : Google_Service_Compute_InstanceGroupManager
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_Operation —patchPerInstanceConfigs()
Inserts or patches per-instance configs for the managed instance group.
public
patchPerInstanceConfigs(string $project, string $zone, string $instanceGroupManager, Google_Service_Compute_InstanceGroupManagersPatchPerInstanceConfigsReq $postBody[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
perInstanceConfig.name serves as a key used to distinguish whether to perform insert or patch. (instanceGroupManagers.patchPerInstanceConfigs)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located. It should conform to RFC1035.
- $instanceGroupManager : string
-
The name of the managed instance group. It should conform to RFC1035.
- $postBody : Google_Service_Compute_InstanceGroupManagersPatchPerInstanceConfigsReq
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_Operation —recreateInstances()
Flags the specified instances in the managed instance group to be immediately recreated. The instances are deleted and recreated using the current instance template for the managed instance group. This operation is marked as DONE when the flag is set even if the instances have not yet been recreated. You must separately verify the status of the recreating action with the listmanagedinstances method.
public
recreateInstances(string $project, string $zone, string $instanceGroupManager, Google_Service_Compute_InstanceGroupManagersRecreateInstancesRequest $postBody[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
If the group is part of a backend service that has enabled connection draining, it can take up to 60 seconds after the connection draining duration has elapsed before the VM instance is removed or deleted.
You can specify a maximum of 1000 instances with this method per request. (instanceGroupManagers.recreateInstances)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located.
- $instanceGroupManager : string
-
The name of the managed instance group.
- $postBody : Google_Service_Compute_InstanceGroupManagersRecreateInstancesRequest
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_Operation —resize()
Resizes the managed instance group. If you increase the size, the group creates new instances using the current instance template. If you decrease the size, the group deletes instances. The resize operation is marked DONE when the resize actions are scheduled even if the group has not yet added or deleted any instances. You must separately verify the status of the creating or deleting actions with the listmanagedinstances method.
public
resize(string $project, string $zone, string $instanceGroupManager, int $size[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
When resizing down, the instance group arbitrarily chooses the order in which VMs are deleted. The group takes into account some VM attributes when making the selection including:
- The status of the VM instance. + The health of the VM instance. + The instance template version the VM is based on. + For regional managed instance groups, the location of the VM instance.
This list is subject to change.
If the group is part of a backend service that has enabled connection draining, it can take up to 60 seconds after the connection draining duration has elapsed before the VM instance is removed or deleted. (instanceGroupManagers.resize)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located.
- $instanceGroupManager : string
-
The name of the managed instance group.
- $size : int
-
The number of running instances that the managed instance group should maintain at any given time. The group automatically adds or removes instances to maintain the number of instances specified by this parameter.
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_Operation —setInstanceTemplate()
Specifies the instance template to use when creating new instances in this group. The templates for existing instances in the group do not change unless you recreate them. (instanceGroupManagers.setInstanceTemplate)
public
setInstanceTemplate(string $project, string $zone, string $instanceGroupManager, Google_Service_Compute_InstanceGroupManagersSetInstanceTemplateRequest $postBody[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located.
- $instanceGroupManager : string
-
The name of the managed instance group.
- $postBody : Google_Service_Compute_InstanceGroupManagersSetInstanceTemplateRequest
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_Operation —setTargetPools()
Modifies the target pools to which all instances in this managed instance group are assigned. The target pools automatically apply to all of the instances in the managed instance group. This operation is marked DONE when you make the request even if the instances have not yet been added to their target pools. The change might take some time to apply to all of the instances in the group depending on the size of the group.
public
setTargetPools(string $project, string $zone, string $instanceGroupManager, Google_Service_Compute_InstanceGroupManagersSetTargetPoolsRequest $postBody[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
(instanceGroupManagers.setTargetPools)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located.
- $instanceGroupManager : string
-
The name of the managed instance group.
- $postBody : Google_Service_Compute_InstanceGroupManagersSetTargetPoolsRequest
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_Operation —updatePerInstanceConfigs()
Inserts or updates per-instance configs for the managed instance group.
public
updatePerInstanceConfigs(string $project, string $zone, string $instanceGroupManager, Google_Service_Compute_InstanceGroupManagersUpdatePerInstanceConfigsReq $postBody[, array<string|int, mixed> $optParams = array() ]) : Google_Service_Compute_Operation
perInstanceConfig.name serves as a key used to distinguish whether to perform insert or patch. (instanceGroupManagers.updatePerInstanceConfigs)
Parameters
- $project : string
-
Project ID for this request.
- $zone : string
-
The name of the zone where the managed instance group is located. It should conform to RFC1035.
- $instanceGroupManager : string
-
The name of the managed instance group. It should conform to RFC1035.
- $postBody : Google_Service_Compute_InstanceGroupManagersUpdatePerInstanceConfigsReq
- $optParams : array<string|int, mixed> = array()
-
Optional parameters.
Tags
Return values
Google_Service_Compute_Operation —convertToArrayAndStripNulls()
protected
convertToArrayAndStripNulls(mixed $o) : mixed
Parameters
- $o : mixed