Troubleshooting
If you're having trouble, there are lots of resources you can turn to.
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   IRC The official MongoDB IRC room is irc.freenode.net/#mongodb. This is the fastest way to get help... if there are people around. 
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   Mailing List » MongoDB's mailing list is a good (and usually very fast) way to get answers to questions. 
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   Bug Tracker Found a bug? Want a feature? Have a question? File it in the » PHP driver's bug tracker. 
You can turn on (very) verbose debugging output by compiling the driver with the debugging flag.
$ ./configure CFLAGS=-DDEBUG
DEBUG turns on all debugging. You can also turn on specific debug flags. In the latest code, these flags are:
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    DEBUG_CONN Debugging connections.