Description: isset ( mixed $var [, mixed $var [, $... ]] )

Determine whether a variable is set

Available in PHP 4, PHP 5

$var : any declared variable

Example : if (isset($var)) { echo "The Variable is Set"; }

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.