[nycphp-talk] in_array() to find an object within an array
Phil Powell
phillip.powell at adnet-sys.com
Mon Mar 29 16:08:23 EST 2004
[PHP]
if (is_array($_POST["assoc_$key"])) {
foreach ($this->getAssocSectionsObjArray($key, $dbAP) as $obj) {
print_r($obj); print_r(" in array? ");
print_r(in_array($obj, $result)); print_r("<P>");
if (!in_array($obj, $result)) array_push($result, $obj);
}
}
[/PHP]
Here is the output of the result of this script:
[Quote]
stdClass Object ( [id] => 2 [placement_name] => Placement #1 ) in array?
Warning: in_array(): Wrong datatype for first argument in
/image_catalog/include/classes.inc.php on line 99
Warning: in_array(): Wrong datatype for first argument in
/www/html/mu-spin/image_catalog/include/classes.inc.php on line 100
stdClass Object ( [id] => 4 [placement_name] => Placement #10 ) in array?
Warning: in_array(): Wrong datatype for first argument in
/image_catalog/include/classes.inc.php on line 99
Warning: in_array(): Wrong datatype for first argument in
/www/html/mu-spin/image_catalog/include/classes.inc.php on line 100
stdClass Object ( [id] => 6 [placement_name] =>
[url]http://blah.com[/url] ) in array?
Warning: in_array(): Wrong datatype for first argument in
/image_catalog/include/classes.inc.php on line 99
Warning: in_array(): Wrong datatype for first argument in
/image_catalog/include/classes.inc.php on line 100
[/Quote]
What I have to do is compare an array of objects, $result, with another
array of objects, $this->getAssocSectionsObjArray($key, $dbAP). Both
arrays will be identical in structure and object formatting, but not in
object data content. What I need to do is to find out if that one array
has the very same object as the other, then don't add it to $result,
otherwise, add to $result.
The object formatting is as follows:
[Quote]obj: stdClass Object ( [id] => 2 [placement_name] => Placement #1
)[/Quote]
And $result can look like this:
[Quote]
result: Array ( [0] => stdClass Object ( [id] => 6 [placement_name] =>
Placement #27 ) [1] => stdClass Object ( [id] => 2 [placement_name] =>
Placement #1 ) )
[/Quote]
I don't wish to loop through both arrays, that would be a performance
nightmare to do that. Is there a version of in_array in existence for
comparing objects?
Thanx
Phil
PS: I went to this manual example at
[url]http://us3.php.net/manual/en/function.in-array.php#40079[/url] but
that involves recursive handling and object rebuilding - this, were I to
figure out what the living blue it is, would have to be put inside
another loop.. OUCH!
--
Phil Powell
Web Developer
ADNET Systems, Inc.
11260 Roger Bacon Drive, Suite 403
Reston, VA 20190-5203
Phone: (703) 709-7218 x107 Cell: (571) 437-4430 FAX: (703) 709-7219
EMail: Phillip.Powell at adnet-sys.com AOL IM: SOA Dude
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