diferencias empty() e isset()

124

&lt;?php
$var&nbsp;=&nbsp;0;

//&nbsp;Se&nbsp;evalúa&nbsp;a&nbsp;true&nbsp;ya&nbsp;que&nbsp;$var&nbsp;está&nbsp;vacia
if&nbsp;(empty($var))&nbsp;{
&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;'$var&nbsp;es&nbsp;o&nbsp;bien&nbsp;0,&nbsp;vacía,&nbsp;o&nbsp;no&nbsp;se&nbsp;encuentra&nbsp;definida&nbsp;en&nbsp;absoluto';
}

//&nbsp;Se&nbsp;evalúa&nbsp;como&nbsp;true&nbsp;ya&nbsp;que&nbsp;$var&nbsp;está&nbsp;definida
if&nbsp;(isset($var))&nbsp;{
&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;'$var&nbsp;está&nbsp;definida&nbsp;a&nbsp;pesar&nbsp;que&nbsp;está&nbsp;vacía';
}
?&gt;

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diferencias empty() e isset()

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