Freshers India

Which of the following variable names are invalid??                          

What will be the output of the following code? function fn (&$var) { $var = $var - ($var/10*5); return $var; } echo fn(100);?                          

What will be the output of following code? $a = 10; echo 'Value of a = $a';?                          

What will be the output of the following code? $Rent = 250; function Expenses($Other) { $Rent = 250 + $Other; return $Rent; } Expenses(50); echo $Rent;?                          

Which of the following variable declarations within a class is invalid in PHP5??                          

Which of the following is used to maintain the value of a variable over different pages??