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PHP Array交叉表实现代码

时间:2019-11-06 11:01     来源/作者:php教程网

如果使用sql语句做的话 工作量太大了,于是尝试自己写一个交叉表的类,好二话不说,我们看看代码 

复制代码代码如下:


/** 
* 基本交叉表 
* @author hugh 

*/ 
class Pivot 

private $HORIZONTAL_TOTAL_FIELD = 'total'; 
private $VERTICAL_TOTAL_FIELD = 'total'; 
private $data; 
private $topPivot; 
private $leftPivot; 
private $measure; 
private $horizontalColumn = array (); 
private $verticalColumn = array (); 
private $pivotValue = array (); 
private $isHorizontalTotal = true; 
private $isVerticalTotal = true; 
private $horizontalTotal = null; 
private $verticalTotal = null; 
private $title = 'PivotTab'; 
/** 
* 初始化交叉表 
*/ 
private function InitPivot() 

$this->topPivot; 
foreach ( $this->data as $d ) 

$this->horizontalColumn [] = $d [$this->leftPivot]; 
$this->verticalColumn [] = $d [$this->topPivot]; 

$this->horizontalColumn = array_unique ( $this->horizontalColumn ); 
$this->verticalColumn = array_unique ( $this->verticalColumn ); 
$reasult = array (); 
foreach ( $this->horizontalColumn as $h ) 

foreach ( $this->verticalColumn as $v ) 

$this->pivotValue [$h] [$v] = 0; 



/** 
* 填充数据 
*/ 
private function fillData() 

foreach ( $this->data as $row ) 

$this->pivotValue [$row [$this->leftPivot]] [$row [$this->topPivot]] += $row [$this->measure]; 

if ($this->isHorizontalTotal) 

$this->setHorizontalTotal (); 

if ($this->isVerticalTotal) 

$this->setVerticalTotal (); 


/** 
* 设置纵向合计 
*/ 
private function setVerticalTotal() 

$this->verticalColumn [] = $this->VERTICAL_TOTAL_FIELD; 
foreach ( $this->horizontalColumn as $i ) 

$rowsum = 0; 
foreach ( $this->verticalColumn as $j ) 

$rowsum += $this->pivotValue [$i] [$j]; 

$this->pivotValue [$i] [$this->TOTAL_FIELD] = $rowsum; 


/** 
* 设置横向合计 
*/ 
private function setHorizontalTotal() 

$this->horizontalColumn [] = $this->HORIZONTAL_TOTAL_FIELD; 
foreach ( $this->verticalColumn as $i ) 

$rowsum = 0; 
foreach ( $this->horizontalColumn as $j ) 

$rowsum += $this->pivotValue [$j] [$i]; 

$this->pivotValue [$this->HORIZONTAL_TOTAL_FIELD] [$i] = $rowsum; 


/** 
* 渲染 
*/ 
function Render() 

echo '<pre>'; 
print_r ( $this->pivotValue ); 

/** 
* 渲染为table 
*/ 
function RenderToTable() 

$resault = "<table border='1' width='250'>\n"; 
$resault .= "<tr><td>$this->title</td>\n"; 
foreach ( $this->verticalColumn as $value ) 

$resault .= "<td>$value</td>\n"; 

$resault .= "</tr>\n"; 
foreach ( $this->horizontalColumn as $i ) 

$resault .= "<tr><td>$i</td>\n"; 
foreach ( $this->pivotValue [$i] as $value ) 

$resault .= "<td>$value</td>\n"; 

$resault .= "</tr>\n"; 

$resault .= "</table>"; 
return $resault; 

/** 
* 构造交叉表 
* @param $data 数据源 
* @param $topPivot 头栏目字段 
* @param $leftPivot 左栏目字段 
* @param $measure 计算量 
*/ 
function __construct(array $data, $topPivot, $leftPivot, $measure) 

$this->data = $data; 
$this->leftPivot = $leftPivot; 
$this->topPivot = $topPivot; 
$this->measure = $measure; 
$this->horizontalColumn = array (); 
$this->verticalColumn = array (); 
$this->InitPivot (); 
$this->fillData (); 


重点在于InitPivot方法及fillData方法。 
InitPivot里面保证了所有的item都会有值(默认为0) 
fillData方法使用选择填充添加的方法,将数据填充入我们装数据的$pivotValue里面。 

然后喜欢怎么输出都可以了

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