Monitoring replication from external system with PHP

Hi,

So I am trying to monitor the status of a replication using php on a Linux system. I set up a user account that has the replmonitor role on the distribution database.

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Via SMSS and logged as the specific user account, I can execute:

N'use distribution; exec sp_replmonitorhelpsubscription @publication=''DBNAME'', @publication_type=2'

And I get 2 rows as a result since I have 2 subscription.

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However when trying it from the Linux box with php, I get the following:

PHP Warning:  mssql_query(): message: Cannot insert the value NULL into column 'agentstoptime', table 'tempdb.dbo.#tmp_replication_monitordata________________________________________________________________________________________000000029230'; column does not allow nulls. INSERT fails. (severity 16) in ....

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So what could cause the insert issue in one case but not the other especially on a temp table ?

Regards,

Olivier