PHP Questions

Question

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

Question

What does the following code do?

Answer

If this code is run it will produce the following error:

Question

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

Question

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

    *
   ***
  *****
 *******
*********
*********
 *******
  *****
   ***
    *

Question

The following code was executed.

<?php
class MyClass {
  private $foo = "bar";
}
 
$myObject = new MyClass();
echo $myObject;

Which produced the following error.

Catchable fatal error: Object of class MyClass could not be converted to string in test.php on line 7
 
Call Stack:
    0.0011     323736   1. {main}() /test.php:0

How can the code be simply changed to prevent this error and produce some form of result?

Question

What does the following snippet print and why?

Question

Given the following form:

<form method="post" action="index.php">
<input type="input" value="" name="text" />
<input type="submit" value="Submit" />
</form>

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

Question

Consider the following:

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

What does the variable $a now equal?

Question

What does the following code snipped print?

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