PHP Test

function helloWorld($a,$b,$c){
    if ($a) {
        if ($b && !$c) {
            return "Goodbye Cruel World!";
        } else if (!$b && !$c) {
            return "Nothing here";
        }
    } else {
        if (!$b) {
            if (!$a && (!$b && $c)) {
                return "Hello, World!";
            } else {
                return "Goodbye World!";
            }
        } else {
            return "Not quite.";
        }
    }
}
$a='?';
$b='?';
$c='?';
echo helloWorld($a,$b,$c);
                

	$s1='Edmonds';
	$s2='Commerce';
                

Which of the following will combine strings $s1 and $s2 into a single string "Edmonds Commerce"?

A. $s1 + $s2
B. "{$s1} {$s2}"
C. $s1.$s2
D. implode('', array($s1,$s2))
E. All of the above combine the strings
                

$s = '12345';
$s[$s[1]] = '2';
$result = $s;
                

What is the value of $result

What is the missing function used to get a line as an array from a valid CSV file?

$fp = fopen('file.csv','r');
while($csvrow = _what_function_($fp)){
    $csvrow; //is an array of values from the csv line
}
                

Often, SQL queries are constructed based on data taken from the user (for instance, a search engine). Which of the following activities can help prevent security breaches?

• A. Placing a firewall between the database server and the web server
• B. Escaping user data so that it cannot be interpreted as commands by the DBMS
• C. Using stored procedures
• D. Using object-oriented programming so that each query can be defined as a separate
class

What is the output of the following pieces of code?

class animal {
    public $name;
    protected $sound = '';
	/**
	 * Set Name
	 * @param string $name
	 */
    protected function setName($name){
        $this->name = $name;
    }

	/**
	 * Speak - get the string that they speak
	 * @return string
	 */
    public function speak(){
        return "No Animal Selected!";
    }

}

class dog extends animal {

	/**
	 * Set the name and the noise that is made
	 * @param string $name
	 * @param string $sound
	 */
    public function __construct($name, $sound='woof'){
		$this->sound = $sound;
        $this->setName($name);
    }

	/**
	 * Speak - get the string that they speak
	 * @return string
	 */
    public function speak(){
        return "{$this->sound} {$this->sound}";
    }

}

class cat extends dog {

	private $motivationThreshold=20;

    /**
	 * Set the name of the cat
	 * @param string $name
	 */
	public function __construct($name){
        $sound='Meeooww';
		parent::__construct($name, $sound);
    }

    /**
	 * the noise that they make
	 * @return string
	 */
	public function speak(){
        return $this->sound;
    }

    /**
	 * Are they motivated enough to walk
	 * @param int $motivation
	 * @return string
	 */
	public function walk($motivation){
		if($motivation > $this->motivationThreshold) {
			return "There must be food, I'm walking";
		} else {
			return "I'm a cat leave me alone";
		}
	}

}



class human extends cat {

	/**
	 * Magic __get Method
	 * return 0 for any properties that don't exist in this scope
	 * @param string $property
	 * @return int 0
	 */
	public function __get($property){
		return 0;
	}

    /**
	 * Set the name
	 * @param string $name
	 */
	public function __construct($name){
        $this->setName($name);
    }

	/**
	 * Are they motivated enough to walk
	 * @param int $motivation
	 * @return string
	 */
	public function walk($motivation){
		if($motivation > $this->motivationThreshold) {
			return "I'm highly motivated";
		} else {
			return "I must be ill";
		}
	}

    /**
	 * Say hello
	 * @return string
	 */
	public function speak(){
        return "Hello, My Name is " . $this->name;
    }

}

$animal = new animal();
$dog = new dog('rover', 'woof');
$cat = new cat('garfield');
$human = new human('fred');

                

echo $animal->speak()
                

echo $dog->speak()
                

echo $cat->walk(15)
                

echo $human->speak() . ' ' . $human->walk(5);
                

To prove you are human: