[PHP] Throwing an exception seems to defeat output buffering

[Wickland, Leif]

I would expect that if I turn on output buffering, echo something, throw an 
exception, and catch the exception, nothing will have been actually output..  
That doesn't seem to be the case.  Throwing an exception seems to defeat output 
buffering.

In the following code, I would not expect to see the <h1>, but I do.



<?
try {
    ob_start();
    echo '<h1>You should not see this!</h1>';
    throw new Exception('<h2>This should be the first output.</h2>');
    exit( 'Contents: ' . ob_get_clean());
}
catch (Exception $ex) {
    exit('<h2>Exception:</h2>' . $ex->getMessage());
}




I'm exercising that code on PHP 5.2.4 and 5.2.8.

Does anybody know why throwing an exception seems to override ob_start(), 
flushing the buffered output?

Thank you,

Leif Wickland

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