Arrays
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<?php
//Difference function for arrays of objects (like array_diff()).
function objArrayDiff($base = array(), $b = array())
{
for($ctr1 = 0; $ctr1 < count($base); ++$ctr1)
{
foreach($b as $key1 => $value1)
{
if($base[$ctr1] == $value1)
{
unset($b[$key1]);
}//End if
}//End foreach
}//End for
return $b;
}//End function objArrayDiff($base = array(), $b = array())
?>
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Usage Example
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$obj1 = new my1Class(1, 2, 3);
$obj2 = new my2Class(1, 2, 3);
$obj3 = new my1Class(2, 3, 4);
$obj4 = new my2Class(2, 3, 4);
$a = array($obj1, $obj2, $obj3);
$obj2->set2ndParm(9);
$b = array($obj2, $obj3, $obj4);
$diff = objArrayDiff($a, $b);
print_r($diff);
Output: (sort of)
Array (
$obj2,
$obj4
)
The method will detect changes in objects or among them. Basically, whatever is in the second array that is not in the first is returned regardless of the size/magnitude of the difference.
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