Description:
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After upgrading from PHP 5.4 to PHP 5.6, we found that using the 'persist' option in the MongoClient constructor is no longer recognized and causes a Fatal Error:

PHP Fatal error:  Uncaught exception 'MongoConnectionException' with message '- Found unknown connection string option 'persist' with value 'main''

This should be noted in the documentation.

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From manual page: http://www.php.net/mongoclient.construct
---


Test script:
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<?php

$mongo = new MongoClient('1.2.3.4', array('persist' => 'main', 'timeout' => 1000));

?>