Question: 1 (ID:124)

ID: 124

Which of the following statements correctly explains the use of instanceof and type hinting? Each correct answer represents a complete solution (Choose three).

A) The instanceof operator can be used to check if the variables are an instance of a particular class. B) The instanceof operator lets a programmer inspect all of the ancestor classes of the object, as well as any interfaces. C) Type hinting is a feature due to which functions can specify what type of parameters must be provided to the functions. D) The instanceof operator can be used to check if the variables are the member of an abstract class.

Question: 2 (ID:282)

ID: 282

What will be the output of the following PHP code?

                        array_combine([1,2,3], [4,5,6]);


                


                A) 
array(1=>2,3=>4,5=>6)
                    
                    
                    
                                    

                B)  script error
                    
                    
                    
                                    

                C) 
array(1=>4,2=>5,3=>6)
                    
                    
                    
                                    

                D) 
array(1,2,3,4,5,6)


            

        
            
                Question: 3 (ID:205)
                ID: 205

                


                

                    
                        Which of the following is a valid SOAP client call?                    

                    


                    

                                                                    

                    

                    


                    
                                            


                
                


                A) 
$client = new SoapClient("any.wsdl");
                    
                    
                    
                                    

                B) 
$client => SoapClient = "any.wsdl";
                    
                    
                    
                                    

                C) 
$client = new SoapClient(null, array());
                    
                    
                    
                                    

                D) 
$client = new SoapClient;
                    
                    
                    
                                    


            
            

        
            
                Question: 4 (ID:708)
                ID: 708

                


                

                    
                        What is the best way to store and verify passwords in PHP ?                    

                    


                    

                                                                    

                    

                    


                    
                                            


                
                


                A)  Using the strongest to date hashing algorithm combined with a salt to avoid dictionary attacks.                    
                    
                    
                                    

                B)  Using the built in password_create() and password_verify() functions in PHP                    
                    
                    
                                    

                C)  md5()                    
                    
                    
                                    

                D)  Using a hashing algorithm like md5 or sha256 and then, when verifying compare the stored hash with the hash of the string submitted by the user                    
                    
                    
                                    


            
            

        
            
                Question: 5 (ID:394)
                ID: 394

                


                

                    
                        Remembering that keys are not reset when using natsort(), what is the output of the following PHP script?                    

                    


                    

                                                $filenames = array(
    'img12.png',
    'img7.png',
    'img21.png',
    'img1.png'
);

natsort($filenames);
$values = array_values($filenames);
echo $values[1];                    


                    


                    


                    
                        Enter the exact script output                    


                

                


                A)  img7.png                    
                    
                    
                                    

                B)  img12.png                    
                    
                    
                                    

                C)  img1.png                    
                    
                    
                                    

                D)  img121.png                    
                    
                    
                                    


            

            

        
            
                Question: 6 (ID:764)
                ID: 764

                


                

                    
                        Reflection functions CANNOT do:                    

                    


                    

                                                                    

                    

                    


                    
                                            


                
                


                A)  Get the namespace name of a class                    
                    
                    
                                    

                B)  Instantiate object                    
                    
                    
                                    

                C)  Modify static properties of the class                    
                    
                    
                                    

                D)  Modify static in functions                    
                    
                    
                                    


            
            

        
            
                Question: 7 (ID:231)
                ID: 231

                


                

                    
                        What will be the output of the following PHP code snippet?                    

                    


                    

                                                echo <<<"FOOBAR"
Hello World!
FOOBAR;                    


                    


                    


                    
                                            


                

                


                A)  Code will throw a warning message.                    
                    
                    
                                    

                B)  Code will run successfully.                    
                    
                    
                                    

                C)  Code will throw an error message.                    
                    
                    
                                    

                D)  Code will not display anything; it will not give any error also.                    
                    
                    
                                    


            

            

        
            
                Question: 8 (ID:614)
                ID: 614

                


                

                    
                        What is the result of the following code snippet?                    

                    


                    

                                                $array = array(
    'a' => 'John',
    'b' => 'Coggeshall',
    'c' => array(
        'd' => 'John',
        'e' => 'Smith'
    )
);

function something($array) {
    extract($array);
    return $c['e'];
}

print something($array);                    


                    


                    


                    
                                            


                

                


                A)  Smith                    
                    
                    
                                    

                B)  A PHP Warning                    
                    
                    
                                    

                C)  NULL                    
                    
                    
                                    

                D)  Coggeshall                    
                    
                    
                                    


            

            

        
            
                Question: 9 (ID:779)
                ID: 779

                


                

                    
                        What will the following code print on the screen?                    

                    


                    

                                                class MyEx1 extends Exception {}
class MyEx2 extends MyEx1 {}

function checkValue(float $a): void {
    if ($a < 10) {
        throw new MyEx1('too small.');
    }
}

try {
    checkValue(50);
    checkValue(5);
} catch (MyEx2 $e) {
    echo $e->getMessage();
} catch (Exception | MyEx1 $e) {
    echo get_class($e);
} finally {
    echo 'End';
}                    


                    


                    


                    
                                            


                

                


                A)  ExceptionEnd                    
                    
                    
                                    

                B)  A runtime error because you are sending integer to a function that expects "float" values                    
                    
                    
                                    

                C)  A parse error because there is no "void" type in PHP                    
                    
                    
                                    

                D)  MyEx1End                    
                    
                    
                                    


            

            

        
            
                Question: 10 (ID:468)
                ID: 468

                


                

                    
                        What is the output of the following code?                    

                    


                    

                                                function format(&$item) {
   $item = strtoupper($item) . '.';
   return $item;
}
$shopping = array("fish", "bread", "eggs", "jelly", "apples");
array_walk($shopping, "format");
$shopping = sort($shopping);
echo $shopping[1];                    


                    


                    


                    
                                            


                

                


                A)  "BREAD."                    
                    
                    
                                    

                B)  "APPLES."                    
                    
                    
                                    

                C)  "apples"                    
                    
                    
                                    

                D)  nothing (no output)