PHP Questions

PHP Question: Post Variables

Take the following HTML form.

What is the output of the following PHP code after the above form has been submitted, and why?

if ($_POST['number'] === 0) {
	echo 'number is zero';
} else {
	echo 'number is not zero';
}

philipnorton42 Fri, 07/29/2011 - 17:10

PHP Question: While And Do While Looping

What does the $count variable equal after each of these loops?

What does the following code do?

define("MY_CONSTANT", array(1,2,3,4,5));

PHP Question: Class Methods

What is the difference between these two lines of code and can you produce the background code used for them?

// Line 1
$MyClass->MyMethod();
 
// Line 2
MyClass::MyMethod();

philipnorton42 Wed, 05/04/2011 - 21:19

Write a PHP script that will print out the following text in the correct diamond shape.

The following code was executed.

What does the following snippet print and why?

PHP Question: Form Variables

Given the following form:

How would you get hold of the value of the input box after the form is submitted?

philipnorton42 Fri, 04/22/2011 - 15:27

PHP Question: Pass By Reference

Consider the following:

function doSomething(&$val) {
    $val++;
}
 
$a = 1;
doSomething($a);

What does the variable $a now equal?

philipnorton42 Tue, 04/19/2011 - 12:47

What does the following code snipped print?

$a = 5;
$b = 'a';
print $$b;