Re: [PHP] usort within a class
On Monday, 18 April 2011 at 21:27, Ashley Sheridan wrote:
I'm trying to get the usort function working inside of a class, but am
having some issues. Basically, the compare function which is the second
parameter isn't recognised, but I'm not really sure how to indicate
exactly where it is.
I've gone over the usort() docs and read the user comments, and the only
thing I've found so far which looked like it was the same issue gave
this example:
bo at erichsen dot com 20-Mar-2001 01:16
when using usort to refer to a function inside a class i have
succesfully used:
?php usort($myarray,array($this,cmp)); ?
Unfortunately, that doesn't work either. A basic example is as follows:
class Search_model extends Model
{
function get_results($q)
{
if(strlen($q))
{
$results = array();
$words = explode(' ', $q);
sort($words);
// build the basic match query parts to be used for the content and
blog tables
if(substr($words[0], 0, 1) == '+' || substr($words[0], 0, 1) == '-'
|| substr($words[0], 0, 1) == '')
{
$queryP1 = SELECT *, MATCH(`content`) AGAINST('$q' IN BOOLEAN MODE)
AS `score` FROM;
$queryP2 = WHERE MATCH(`content`) AGAINST('$q' IN BOOLEAN MODE);
}
else
{
$queryP1 = SELECT *, MATCH(`content`) AGAINST('$q') AS `score`
FROM;
$queryP2 = WHERE `display`='yes' AND MATCH(`content`)
AGAINST('$q');
}
$sql = $queryP1 `content` $queryP2;
$query = $this-db-query($sql);
foreach($query-result() as $row)
{
$results[] = $row;
$results[count($result)-1]-content_type = 'content';
}
usort($results, array($this, content_score_sort));
}
}
function content_score_sort($a, $b)
{
// custom sort function to sort pages based on their score, which is
an array value within each page
if($a['score'] == $b['score'])
return 0;
else
return ($a['score'] $b['score']) ? -1 : 1;
}
}
I know it's probably something very simple, but for the life of me I
can't find what I'm missing.
I think in part it's that the normal way I know of calling that sort
function from within the class is $this-content_score_sort(), but that
isn't recognised either.
If anyone can shed any light on this it'd be very welcome!
That is the correct way to specify it. Works fine for me:
http://dev.stut.net/php/usort.php
What makes you think it's not being recognised? I note that your get_results
method doesn't actually return anything, so how do you know the sort isn't
working?
-Stuart
--
Stuart Dallas
3ft9 Ltd
http://3ft9.com/
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Re: [PHP] usort within a class
On Mon, 2011-04-18 at 21:41 +0100, Stuart Dallas wrote:
On Monday, 18 April 2011 at 21:27, Ashley Sheridan wrote:
I'm trying to get the usort function working inside of a class, but am
having some issues. Basically, the compare function which is the second
parameter isn't recognised, but I'm not really sure how to indicate
exactly where it is.
I've gone over the usort() docs and read the user comments, and the only
thing I've found so far which looked like it was the same issue gave
this example:
bo at erichsen dot com 20-Mar-2001 01:16
when using usort to refer to a function inside a class i have
succesfully used:
?php usort($myarray,array($this,cmp)); ?
Unfortunately, that doesn't work either. A basic example is as follows:
class Search_model extends Model
{
function get_results($q)
{
if(strlen($q))
{
$results = array();
$words = explode(' ', $q);
sort($words);
// build the basic match query parts to be used for the content and
blog tables
if(substr($words[0], 0, 1) == '+' || substr($words[0], 0, 1) == '-'
|| substr($words[0], 0, 1) == '')
{
$queryP1 = SELECT *, MATCH(`content`) AGAINST('$q' IN BOOLEAN MODE)
AS `score` FROM;
$queryP2 = WHERE MATCH(`content`) AGAINST('$q' IN BOOLEAN MODE);
}
else
{
$queryP1 = SELECT *, MATCH(`content`) AGAINST('$q') AS `score`
FROM;
$queryP2 = WHERE `display`='yes' AND MATCH(`content`)
AGAINST('$q');
}
$sql = $queryP1 `content` $queryP2;
$query = $this-db-query($sql);
foreach($query-result() as $row)
{
$results[] = $row;
$results[count($result)-1]-content_type = 'content';
}
usort($results, array($this, content_score_sort));
}
}
function content_score_sort($a, $b)
{
// custom sort function to sort pages based on their score, which is
an array value within each page
if($a['score'] == $b['score'])
return 0;
else
return ($a['score'] $b['score']) ? -1 : 1;
}
}
I know it's probably something very simple, but for the life of me I
can't find what I'm missing.
I think in part it's that the normal way I know of calling that sort
function from within the class is $this-content_score_sort(), but that
isn't recognised either.
If anyone can shed any light on this it'd be very welcome!
That is the correct way to specify it. Works fine for me:
http://dev.stut.net/php/usort.php
What makes you think it's not being recognised? I note that your get_results
method doesn't actually return anything, so how do you know the sort isn't
working?
-Stuart
--
Stuart Dallas
3ft9 Ltd
http://3ft9.com/
Because I don't need it to return anything at that point, the usort call
is within the get_results() method itself. Also, as I keep getting a
variety of errors with the usort call I'm taking a wild guess that it
doesn't work.
With usort($results, array($this, content_score_sort));
I get 'Fatal error: Cannot use object of type stdClass as array'
usort($this-results, array($this, content_score_sort)); gives
'Message: usort() expects parameter 1 to be array, null given'
This is all built around a CodeIgniter class, but I figured this isn't
really a CI question but a PHP one, however I'm still at a loss :-/
--
Thanks,
Ash
http://www.ashleysheridan.co.uk
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Re: [PHP] usort within a class
On Monday, 18 April 2011 at 21:52, Ashley Sheridan wrote:
On Mon, 2011-04-18 at 21:41 +0100, Stuart Dallas wrote:
On Monday, 18 April 2011 at 21:27, Ashley Sheridan wrote:
I'm trying to get the usort function working inside of a class, but am
having some issues. Basically, the compare function which is the second
parameter isn't recognised, but I'm not really sure how to indicate
exactly where it is.
I've gone over the usort() docs and read the user comments, and the only
thing I've found so far which looked like it was the same issue gave
this example:
bo at erichsen dot com 20-Mar-2001 01:16
when using usort to refer to a function inside a class i have
succesfully used:
?php usort($myarray,array($this,cmp)); ?
Unfortunately, that doesn't work either. A basic example is as follows:
class Search_model extends Model
{
function get_results($q)
{
if(strlen($q))
{
$results = array();
$words = explode(' ', $q);
sort($words);
// build the basic match query parts to be used for the content and
blog tables
if(substr($words[0], 0, 1) == '+' || substr($words[0], 0, 1) == '-'
|| substr($words[0], 0, 1) == '')
{
$queryP1 = SELECT *, MATCH(`content`) AGAINST('$q' IN BOOLEAN MODE)
AS `score` FROM;
$queryP2 = WHERE MATCH(`content`) AGAINST('$q' IN BOOLEAN MODE);
}
else
{
$queryP1 = SELECT *, MATCH(`content`) AGAINST('$q') AS `score`
FROM;
$queryP2 = WHERE `display`='yes' AND MATCH(`content`)
AGAINST('$q');
}
$sql = $queryP1 `content` $queryP2;
$query = $this-db-query($sql);
foreach($query-result() as $row)
{
$results[] = $row;
$results[count($result)-1]-content_type = 'content';
}
usort($results, array($this, content_score_sort));
}
}
function content_score_sort($a, $b)
{
// custom sort function to sort pages based on their score, which is
an array value within each page
if($a['score'] == $b['score'])
return 0;
else
return ($a['score'] $b['score']) ? -1 : 1;
}
}
I know it's probably something very simple, but for the life of me I
can't find what I'm missing.
I think in part it's that the normal way I know of calling that sort
function from within the class is $this-content_score_sort(), but that
isn't recognised either.
If anyone can shed any light on this it'd be very welcome!
That is the correct way to specify it. Works fine for me:
http://dev.stut.net/php/usort.php
What makes you think it's not being recognised? I note that your
get_results method doesn't actually return anything, so how do you know the
sort isn't working?
-Stuart
Because I don't need it to return anything at that point, the usort call
is within the get_results() method itself. Also, as I keep getting a
variety of errors with the usort call I'm taking a wild guess that it
doesn't work.
With usort($results, array($this, content_score_sort));
I get 'Fatal error: Cannot use object of type stdClass as array'
usort($this-results, array($this, content_score_sort)); gives
'Message: usort() expects parameter 1 to be array, null given'
This is all built around a CodeIgniter class, but I figured this isn't
really a CI question but a PHP one, however I'm still at a loss :-/
The usort call is at the end of the get_results method, and $results is local.
If you want it to be a member of the class you need to set it as such.
I think you'll find your issue is that each element of $results will be an
object, but in content_score_sort you're treating them as arrays. Change
$a['score'] to $a-score and modify $b in the same way.
-Stuart
--
Stuart Dallas
3ft9 Ltd
http://3ft9.com/
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Re: [PHP] usort within a class
On Thu, 2006-08-24 at 03:13 +0700, Peter Lauri wrote:
Hi,
Is it possible to have the compare function in a class? I can not get it to
work, this is pseudo code:
class A {
function getArray() {
//dosomethingandgetanarray
$array = blabla;
usort($array, $this-myCompareFunction);
//Or maybe A::myCompareFunction
}
function myCompareFunction($a, $b) {
//return rajraj depending on $a and $b values
}
}
Right now I have keep the compare function outside of the class like this:
class A {
function getArray() {
//dosomethingandgetanarray
$array = blabla;
usort($array, $this-myCompareFunction);
}
}
function myCompareFunction($a, $b) {
//return rajraj depending on $a and $b values
}
RTF :)
usort( $array, array( $this, 'myCompareFunction' ) )
Cheers,
Rob.
--
..
| InterJinn Application Framework - http://www.interjinn.com |
::
| An application and templating framework for PHP. Boasting |
| a powerful, scalable system for accessing system services |
| such as forms, properties, sessions, and caches. InterJinn |
| also provides an extremely flexible architecture for |
| creating re-usable components quickly and easily. |
`'
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RE: [PHP] usort within a class
Working perfect, thanks :) I did RTFM but I did miss that :)
-Original Message-
From: Robert Cummings [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 24, 2006 3:46 AM
To: Peter Lauri
Cc: php-general@lists.php.net
Subject: Re: [PHP] usort within a class
On Thu, 2006-08-24 at 03:13 +0700, Peter Lauri wrote:
Hi,
Is it possible to have the compare function in a class? I can not get it
to
work, this is pseudo code:
class A {
function getArray() {
//dosomethingandgetanarray
$array = blabla;
usort($array, $this-myCompareFunction);
//Or maybe A::myCompareFunction
}
function myCompareFunction($a, $b) {
//return rajraj depending on $a and $b values
}
}
Right now I have keep the compare function outside of the class like this:
class A {
function getArray() {
//dosomethingandgetanarray
$array = blabla;
usort($array, $this-myCompareFunction);
}
}
function myCompareFunction($a, $b) {
//return rajraj depending on $a and $b values
}
RTF :)
usort( $array, array( $this, 'myCompareFunction' ) )
Cheers,
Rob.
--
..
| InterJinn Application Framework - http://www.interjinn.com |
::
| An application and templating framework for PHP. Boasting |
| a powerful, scalable system for accessing system services |
| such as forms, properties, sessions, and caches. InterJinn |
| also provides an extremely flexible architecture for |
| creating re-usable components quickly and easily. |
`'
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
