The difference between isset and empty _php tutorial

Isset ($var); is false no definition is not defined as false
$var = ";
Isset ($var); For true defines the true
Empty ($var); True value is null back to True
$var = ' 111 ';
Empty ($var); False is not NULL to return False

http://www.bkjia.com/PHPjc/317830.html www.bkjia.com true http://www.bkjia.com/PHPjc/317830.html techarticle isset ($var);//For false no definition is not defined as false $var = ' '; isset ($var);//True Empty ($var);//True value is null back true $var = ' 111 '; Empty ($ var);//= False NOT NULL return ...

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