PHP Programming Mock Test 5

1. Which one of the following preg PHP function is used to do a find and replace on a string or an array?

2. Which one of the following preg PHP functions is used to take a string, and put it in an array?

3. Which characters is used to access property variables on an object-by-object basis?

4. Before you try to process the file, you need to make sure that your $err value is equivalent to _________

5. What will be the output of the following PHP code?

<?php
class MyClass
{
}

$a = new MyClass;
var_dump(!($a instanceof stdClass));
?>

6. What should be used to refer to a method in the context of a class rather than an object you use?

7. What will be the output of the following PHP code?

<?php
interface MyInterface
{
}

class MyClass implements MyInterface
{
}

$a = new MyClass;

var_dump($a instanceof MyClass);
var_dump($a instanceof MyInterface);
?>

8. What will be the output of the following PHP code?

<?php
    class ShopProductWriter
    {
        public function write( $shopProduct )
        {
            $str = "{$shopProduct->title}: " .$shopProduct->getProducer() ." ({$shopProduct->price})\n";
            print $str;
        }
    }
    $product1 = new ShopProduct( "My Antonia", "Willa", "Cather", 5.99 );
    $writer = new ShopProductWriter();
    $writer->write( $product1 );
?>

9. Which one of the following statements instantiates the mysqli class?

10. What will be the output of the following PHP code?

<?php
class ParentClass
{
}

class MyClass extends ParentClass
{
}

$a = new MyClass;

var_dump($a instanceof MyClass);
var_dump($a instanceof ParentClass);
?>