Syntax:bool public DsSet::isEmpty (void)
Parameters: this function takes no parameters.Return value:This function returns a boolean value depending on whether the set is empty or not. If the Set instance is empty, then this function returns true, otherwise it returns False.The following programs illustrate the Ds / Set::isEmpty() function :Program 1:
// Declaring a new set $set = new DsSet();
// Show Set Element var_dump ( $set );
// Check if the set is empty if ( $set -> isEmpty()) echo "Set is Empty" ;
?> Exit:object (DsSet ) # 1 (0) {} Set is Empty Program 2:
// Declare a new set $set = new DsSet ([ "Geeks" , "for" , "Keegs" ]);
// Show Set Element var_dump ( $set );
// Check if Set is empty if ( $set -> isEmpty() == 0) echo "Set is Not Empty" ;
?> Exit:object (DsSet ) # 1 (3) {[0] = > string (5) "Geeks" [1] = > string (3) "for" [2] = > string (5) "Keegs"} Set is Not Empty Link: http://php.net/manual/en/ds-set.isempty.php
