Setting flags versus checking for existing/nonexisting values

["Chris W. Parker" <cparker@xxxxxxxxxxxx>]

Hello,

Is it a better practice to set flags to determine the action of your
code or is it perfectly acceptable to have your code determine what it
should do based on the existence (or lack thereof) of data?

For example:

<?php

if($value == 1)
{
	$flag = true;
}

if($flag === true)
{
	echo "I wish I could come to the PHP meetup in Chicago! :(";
}

?>

versus:

<?php

if($value == 1)
{
	echo "I wish I could come to the PHP meetup in Chicago! :(";
}

?>

Of course this is an overly simplistic example but you get the idea.

Are there pros and cons to both sides or should I just avoid the latter
example all together?



Thanks,
Chris.

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