請教二維數組矩陣演算法

來源:互聯網
上載者:User
$ary = array('a'=>array('a1','a2'),'b'=>array('b1','b2'),'c'=>array('c1','c2'),);

如何把上面的數組,輸出到頁面成這樣啊


回複討論(解決方案)

echo '
 
  ';foreach($ary['a'] as $aV){foreach($ary['b'] as $bV){foreach($ary['c'] as $cV){echo "
  ";}}}echo '
  
$aV $bV $cV
';

echo '
 
  ';foreach($ary['a'] as $aV){foreach($ary['b'] as $bV){foreach($ary['c'] as $cV){echo "
  ";}}}echo '
  
$aV $bV $cV
';


忘了說, 鍵a,b,c是可能n個的

$ary = array(    'a'=>array('a1','a2'),    'b'=>array('b1','b2'),    'c'=>array('c1','c2'),);echo "
 
  \n";echo "
  \n";foreach($ary['a'] as $m) { foreach($ary['b'] as $n) { foreach($ary['c'] as $v) { echo "
   \n"; } }}echo "
  
a b c
$m $n $v
";
[code=html]









a b c
a1 b1 c1
a1 b1 c2
a1 b2 c1
a1 b2 c2
a2 b1 c1
a2 b1 c2
a2 b2 c1
a2 b2 c2

/code]

精華區有 求笛卡爾積 的代碼

精華區有 求笛卡爾積 的代碼


忘了說, 鍵a,b,c是可能n個的,如:a,b,c,d,e,f...................

$ary = array(    'a'=>array('a1','a2'),    'b'=>array('b1','b2'),    'c'=>array('c1','c2'),'d'=>array('d1','d2'),'e'=>array('e1','e2'),//..........多行......);

精華區 迪爾卡積 我問的問題....前後幾篇 很完整了

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