PHP nested array from flat MySQL query result -

-

i need create line chart using highcharts.com js. plugin requires json data following structure:

series: [{     {     name: 'book 2',     data: [             1970, 120,             2001,  50,             2005, 180,             2014,  50           ]     },      {     name: 'another book',     data: [             1970, 120,             2001,  50,             2005, 180,             2014,  50           ]     }             }]

(the data example)

i want query needed data mysql database. data extracted meekrodb.com library in php.

$results = db::query("select booktitle, editionnr, year editions");

the query far outputs flat array:

    (         [0] => array             (                 [booktitle] => booktitle_a                 [editionnr] => 11                 [year] => 2012             )         [1] => array             (                 [booktitle] => booktitle_a (the same)                 [editionnr] => 12                 [year] => 2013             )          [2] => array             (                 [booktitle] => another_booktitle                 [editionnr] => 1                 [year] => 2000             ) ...

the top level indexes correspond rows of result of query. data output must hierarchial. how can convert nested array looks this?

array (     [name] => book_title_a     [data] => array         (             [0] => 2012, 11  // these rows year (=2012) , editionnr (=11th edition)             [1] => 2013, 12         )      [name] => another_book_title     [data] => array         (             [0] => 2000, 1             [1] => 2011, 2             [2] => 2012, 3         ) )

i appreciate help.

-andi

try this:

$data = array();  foreach ( $rows $row ) {   $booktitle = $row['booktitle'];   if ( !isset( $data[$booktitle] ) ) {     $data[$booktitle] = array( "name" => $booktitle, "data" => array() );   }   $data[$booktitle]['data'][] = array( $row['year'], $row['editionnr'] ); }  echo json_encode( array_values( $data ) );

Comments

Post a Comment

Popular posts from this blog

c# - Unity IoC Lifetime per HttpRequest for UserStore -

-
i'm trying clean default implementation of accountcontroller.cs comes out of box in new mvc5/owin security implementation. have modified constructor this: private usermanager<applicationuser> usermanager; public accountcontroller(usermanager<applicationuser> usermanager) { this.usermanager = usermanager; } also, have created lifetime manager unity looks this: public class httpcontextlifetimemanager<t> : lifetimemanager, idisposable { private httpcontextbase _context = null; public httpcontextlifetimemanager() { _context = new httpcontextwrapper(httpcontext.current); } public httpcontextlifetimemanager(httpcontextbase context) { if (context == null) throw new argumentnullexception("context"); _context = context; } public void dispose() { this.removevalue(); } public override object get...
Read more

Change the color of an oval at click in Java AWT -

-
i have draw ovals in java, , @ click change color. beginning tried change color after 20 ms, doesn't work. my code is: public class mycomponentnew extends frame { public graphics2d g2d; public mycomponentnew(string title) { super(title); setsize(400, 550); } @override public void paint(graphics g) { this.g2d = (graphics2d) g; this.g2d.setcolor(color.red); this.g2d.filloval(10, 55, 50, 100); } public void changecolor () { this.g2d.setcolor(color.blue); this.g2d.filloval(10, 55, 50, 100); } } and in class main method have: mycomponentnew m; m = new mycomponentnew("fereastra cu baloane"); m.setvisible(true); m.addwindowlistener(new windowadapter() { @override public void windowclosing(windowevent we) { system.exit(0); } }); try { thread.sleep(20); } catch(interruptedexception e) {} m.changecolor(); the color of oval remains red. ...
Read more

I am trying to solve the error message 'incompatible ranks 0 and 1 in assignment' in a fortran 95 program. -

-
i writing program in fortran find velocity of parachuting person in relation time. keep getting error can't fix. new programming , appreciated. the error is v(i+1)=v(i)+[32-((c*v(i)*v(i))/m)]*(h) 1 error: incompatible ranks 0 , 1 in assignment @ (1) and program is program para integer :: real :: v(11) !velocity real :: q !initial velocity real :: h !time step real :: c !drag coefficient real :: m !mass ! gravity equal 32 ft/s^2 write (*,*)'enter time step' read(*,*)h write(*,*)'enter initial velocity' read(*,*)q write(*,*)'enter drag coefficient' read(*,*)c write(*,*)'enter mass' read(*,*)m i=1,10 ! 1 10, 1 being interval. end v(i+1)=v(i)+[32-((c*v(i)*v(i))/m)]*(h) q=v(1) end program you cannot use [] normal parenthesis in expressions. array constructor, [ items ] means array items elements. end do should after line.
Read more