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echo "<br>output_buffering = " . ini_get('output_buffering');

echo "<br>PHP version = " . phpversion();

?>

The most intuitive new function calls are ob_start and ob_flush; ob_start opens a new output buffer while ob_flush flushes the contents of this output buffer to STDOUT. Once the output buffer is flushed, we still need the call to flush() in order to flush STDOUT: