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:
> > >
> > >
> > >
> > > 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 $b in the same way.
-Stuart
--
Stuart Dallas
3ft9 Ltd
http://3ft9.com/
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Re: [PHP] usort within a class
On Mon, 2011-04-18 at 21:41 +0100, Stuart Dallas wrote:
> On Monday, 18 April 2011 at 21:27, Ashley Sheridan wrote:
> I'm trying to get the usort function working inside of a class, but am
> > having some issues. Basically, the compare function which is the second
> > parameter isn't recognised, but I'm not really sure how to indicate
> > exactly where it is.
> >
> > I've gone over the usort() docs and read the user comments, and the only
> > thing I've found so far which looked like it was the same issue gave
> > this example:
> >
> >
> >
> > bo at erichsen dot com 20-Mar-2001 01:16
> > when using usort to refer to a function inside a class i have
> > succesfully used:
> >
> >
> >
> > Unfortunately, that doesn't work either. A basic example is as follows:
> >
> >
> > class Search_model extends Model
> > {
> > function get_results($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($this, "content_score_sort")); gives
'Message: usort() expects parameter 1 to be array, null given'
This is all built around a CodeIgniter class, but I figured this isn't
really a CI question but a PHP one, however I'm still at a loss :-/
--
Thanks,
Ash
http://www.ashleysheridan.co.uk
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Re: [PHP] usort within a class
On Monday, 18 April 2011 at 21:27, Ashley Sheridan wrote:
I'm trying to get the usort function working inside of a class, but am
> having some issues. Basically, the compare function which is the second
> parameter isn't recognised, but I'm not really sure how to indicate
> exactly where it is.
>
> I've gone over the usort() docs and read the user comments, and the only
> thing I've found so far which looked like it was the same issue gave
> this example:
>
>
>
> bo at erichsen dot com 20-Mar-2001 01:16
> when using usort to refer to a function inside a class i have
> succesfully used:
>
>
>
> Unfortunately, that doesn't work either. A basic example is as follows:
>
>
> class Search_model extends Model
> {
> function get_results($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
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. |
`'
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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. |
`'
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
