Troubleshooting “Warning: session_start(): Cannot send session cache limiter - headers already sent”

Question

i am getting Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at error

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Answer 1

For others who may run across this - it can also occur if someone carelessly leaves trailing spaces from a php include file. Example:

In the case above, if the mylib.php has blank spaces after its closing ?> tag, this will cause an error. This obviously can get annoying if you've included/required many files. Luckily the error tells you which file is offending.

HTH