php - how to do the calculation in an array -


i have array : 

array (     [0] => array   (       [batch_id] => 1       [seq_id] => 1       [q_id] => 2046       [a1] => 0       [a2] => 1       [a3] => 2       [a4] => 3       [a5] => 4    ) )

i need minus value of a1-a5 1

desire result(e.g. a1):

 array(4) { ["w_id"]=> string(5) "99911" ["q_id"]=> string(4) "2046" ["c_id"]=> string(6) "a1" ["rank"]=> int(1) "-1" }

my code follow: 

$result = mysql_query("select * table_1");      while($cr = mysql_fetch_array($result)){         $rr_id = $cr['batch_id'].$cr['seq_id'];     $rid = '999'.$rr_id;           $q_id = $cr['q_id'];      foreach ($cr $k => $v){   if(preg_match('{^a\d+$}',$k)){     $new_insert[] = array(         'w_id'=>$rid,         'q_id' =>$q_id,         'c_id' =>$k,         'rank'=>$v-1 );      }   }

however, result of rank becomes

array(4) { ["w_id"]=> string(5) "99911" ["q_id"]=> string(4) "2046" ["c_id"]=> string(6) "a1" ["rank"]=> int(0) }

cannot show value of rank

any problem code??can answer question thank much

you can use :

$data = array_map(function ($v) {     foreach($v $k => &$x) {         if (preg_match('{^a\d+$}', $k)) {             $x = $x - 1;         }     }     return $v; }, $data);  print_r($data);

live demo


Comments

Post a Comment

Popular posts from this blog

linux - xterm copying to CLIPBOARD using copy-selection causes automatic updating of CLIPBOARD upon mouse selection -

i've tried various ways coerce xterm (versions 285 , 292) copy selection clipboard clipboard whenever press ctrl-shift-c. promising way far has been, in ~/.xresources, put this: xterm*vt100.translations: #override \ ctrl shift <keypress> c: copy-selection(clipboard) \n\ ctrl shift <keypress> v: insert-selection(clipboard) ctrl-shift-v works perfectly, copying has nuance... if restart xterm, highlighting text puts things in primary clipboard; expected, proper, default behavior. if hit ctrl-shift-c, copies current selection clipboard clipboard. the bug, however, if highlight text after first time pressed ctrl-shift-c, you'll see highlighting copies both primary and clipboard. cannot figure out how stop xterm updating clipboard upon selection... , doesn't make sense me in first place. i said, @ specific point in time, copy selection clipboard... yet starts updating automatically upon selection after doing once... anyone have workaround...
Read more

c++ - qgraphicsview horizontal scrolling always has a vertical delta -

Image
i've subclassed qgraphicsview custom canvas used in cad application. i've reimplemented qgraphicsview::wheelevent check keyboard modifiers control key and, if control key pressed, zoom. i'm trying implement horizontal scroll when user holds shift , uses wheel. the problem i'm having horizontal scrolling always scrolls 0.279. not huge problem, hugely annoying , points else being wrong. so, here questions: is right way implement horizontal scrolling? if not, is? how eliminate delta of 0.279? thanks in advance. code , sample output below void myview::zoom(int delta) { double factor = pow(1.2, delta/abs(delta)); this->scale(factor, factor); } void myview::scrollhorizontal(int level) { qpointf center = maptoscene(viewport()->rect().center()); qdebug() << "center: " << center.x() << ", " << center.y(); centeron(qpointf(center.x() - level, center.y())); } void myview::wheelevent(qwheeleve...
Read more