CSCI 2910 PHP Intro/Array/MySQL Quiz Name: ________________________________
Spring 2007
1. The PHP concatenation character, i.e., the character used to join strings into a single string, is:
a.) + b.) & c.) ^ d.) ~ e.) – f.) . g.) : h.) >
2. The statement $var1 = 5; declares the variable $var1 as:
a.) a boolean b.) a float c.) an integer d.) a string e.) code doesn't force a declaration
3. If the variable $var2 is declared as a float, then later, the statement $var2 = false; is executed,
which of the following happens?
a.) The type of $var2 remains unchanged and the value is changed to 1.
b.) The type of $var2 remains unchanged and the value is changed to 0.
c.) The type of $var2 is changed to boolean and the value false is assigned to it.
d.) The type and stored value of $var2 remain unchanged, i.e., the statement has not effect.
4. Assume a decimal value is type cast to an integer variable $i using the PHP expression
$intval = (int)48.95; What does $intval contain after this expression executes?
a.) null b.) 0 c.) 48 d.) 49 e.) None of the above
5. In the foreach loop shown below, circle the variable, $a, $b, or $c that represents the index of the
array element when accessed within the loop and underline the variable that represents the array.
foreach ($a as $b => $c) { ...loop code... };
6. In the space below, convert/rewrite the following JavaScript code to PHP.
if (value >= 0)
document.write ("The value equals " + value + ".\n");
if ($value >= 0)
print "The value equals ".$value.".\n";
7. The PHP keyword "static" is used to:
a.) make the PHP code of your scripts visible to the client like JavaScript.
b.) declare global variables visible to all other functions.
c.) declare a special data type used for random numbers.
d.) declare a variable that remains declared for the duration, but is visible only within its function.
e.) create an array of fixed length.
8. True/False: In PHP it is legal to declare an array of mixed types, e.g., $a = array(false, 9.8, "boy", 5);
Use the following array declaration for the next three problems.
$links = array('etsu'=>'http://www.etsu.edu',
3=>'http://www.yahoo.com',
'what'=>'http://www.whatis.com');
9. Fix the code below to ensure that it will not print "Array element 3 is Array[3]" and instead print "Array
element 3 is http://www.yahoo.com"
print "Array element 3 is {$links[3]}";
print "Array element 3 is ".$links[3];
OR
