Which function can be used to delete a file?

What is the string concatenation operator in PHP?

Which is useful for method overloading?

Which will store order number (34) in an „OrderCookie'?

What would occur if a fatal error was thrown in your PHP program?

Correct line to use within the php.ini file, to specify that 128MB would be the maximum amount of memory that a script may use?

For PHP version <= 5.3, how can we activate error reporting for all levels?

What will be the array $b after executing this code? $a = array(1, 3, 5); $b = array(2, 4, 6); $b += $a;

$i = 5; print $i++ + ++$i;

What result? $a = '1'; $a[$a] = '2'; echo $a;

What will this return: $value='Hello_World'; $rt=explode('_',$value); echo $rt[0];