---- EXPECTED OUTPUT
[callback:1]This call will obtain the content, but will not flush the buffer.
Notice: ob_get_flush(): Failed to send buffer of callback (0) in %s on line 11

Notice: ob_get_flush(): Failed to delete buffer of callback (0) in %s on line 11
string(65) "This call will obtain the content, but will not flush the buffer."
---- ACTUAL OUTPUT
Usage: php
      php -[b|c|n|h|i|q|s|v|?] [<file>] [args...]
  Run in LSAPI mode, only '-b', '-s' and '-c' are effective
  Run in Command Line Interpreter mode when parameters are specified

  -b <address:port>|<port> Bind Path for external LSAPI Server mode
  -c <path>|<file> Look for php.ini file in this directory
  -n    No php.ini file will be used
  -h    This help
  -i    PHP information
  -l    Syntax check
  -q    Quiet-mode.  Suppress HTTP Header output.
  -s    Display colour syntax highlighted source.
  -v    Version number
  -?    This help

  args...    Arguments passed to script.
---- FAILED