php is_empty code example

Example 1: php check for empty string

if (empty($var)) {
    echo '$var is either 0, empty, or not set at all';
}

Example 2: php empty array

//To clear array you are able to simply re-instantiate it
$foo = array();

//To clear $foo from the symbol table use
unset($foo);

Example 3: php check empty variable

empty var php