Description:
------------
Based on my experimentation, this description of array  
comparison operators, found at  
http://us2.php.net/manual/en/language.operators.array.php,  
seems terribly imprecise:  
  
$a == $b	TRUE if $a and $b have the same elements.  
$a === $b	TRUE if $a and $b have the same elements  
in the same order.  
  
I submit that more precise and helpful definitions would  
be:  
  
$a == $b	TRUE if $a and $b have the same key/value  
pairs.  
$a === $b	TRUE if $a and $b have the same key/value  
pairs, in the same order, and of the same types.  
  
I based my conclusions on the script below, tested on  
Linux using PHP 4.3.4 and PHP 5.0.2.  

Reproduce code:
---------------
<?php

// Equality operator:

// Key/value pairs must be same
var_dump(array(1,2) == array(1=>1,2=>2)); // False

// Order can be different
var_dump(array(1,2) == array(1=>2,0=>1)); // True

// And types can be different
var_dump(array(1,2) == array('1','2e0')); // True


// Identity operator:

// Key/value pairs must be same
var_dump(array(1,2) === array(1=>1,2=>2)); // False

// Order must be same
var_dump(array(1,2) === array(1=>2,0=>1)); // False

// And types must be same
var_dump(array(1,2) === array('1',2)); // False
var_dump(array(1,2) === array(1,'2e0')); // False

?>

Expected result:
----------------
Taking the manual's descriptions at face-value, I would 
have expected the script to return: 
 
bool(true) (elements are same, only keys are different) 
bool(true) 
bool(true) 
bool(true) (elements are in same order, only keys are 
different) 
bool(false) 
bool(true) (elements are in same order, only types, which 
the manual doesn't refer to in discussion of arrays, are 
different) 
bool(true)  
 

Actual result:
--------------
The script actually returns (as explained in the 
comments): 
 
bool(false)  
bool(true)  
bool(true)  
bool(false)  
bool(false)  
bool(false)  
bool(false)