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【PHP】 PHP 大数组循环
作者:dezai / 发布于2013/12/16/ 436
<?php
error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED & ~E_STRICT);

class weight {
 private $_aItems = array();
 private $_aTable = array();
 private $_aDict = array();
 private $_aMatchs = array();
 private $_aShow = array();
 function __construct() {
 }

 public function newItems($aItems){
  //添加新的检索内容
  if (!is_array($aItems))
   $aItems = (array)$aItems;
  $this->_aItems = $aItems;
  $this->_aMatchs = array();
  $this->_aShow = array();
 }

 public function newTable($aTable){
  if (!is_array($aTable))
   $aTable = (array)$aTable;
  $this->_aTable = $aTable;
  $this->generateDict();
 }

 private function generateDict() {
  //将字典处理成数组形式
  $convert = function($value) {
   $value = str_replace('|', ',', $value);
   $value = explode(',', $value);
   return $value;
  };
  $this->_aDict = array_map($convert, $this->_aTable);
 }

 public function getMatchs() {
  //返回对照表
  return $this->_aMatchs;
 }

 public function getShow($sRule = 'debug') {
  /*返回格式化的结果集
   * $sFormat: 指定输出格式
   */
  if (empty($this->_aItems)||empty($this->_aTable))
   //字典源文件不存在
   return false;
  if (empty($this->_aShow)) {
   /*匹配表还没有生成，自动调用相应的命令生成*/
   $this->loopTable();
  }
  $makeDumpStr = function($value, $key) use (&$dumpStr) {
   //生成导出文件的文本
   if (count($value) >1) {
    foreach ($value as $valueOne) {
     $valueStr .= $valueOne. ',';
    }
    $dumpStr .= $this->_aItems[$key] . "\t匹配多个记录号\t". $valueStr ."\r\n";
   } else {
    $dumpStr .= $this->_aItems[$key] . "\t匹配惟一记录号\t". $value[0] ."\r\n";
   }
  };
  switch($sRule) {
   case 'debug':
    print_r($this->_aShow);
    break;
   case 'json':
    return json_encode($this->_aShow);
    break;
   case 'txt':
    $timeExport = date("Y/M/D h:i:s");
    $dumpStr = '';
    $rFile = fopen('dump.txt', 'w');
    array_walk($this->_aShow, $makeDumpStr);
    $sContent = <<<EOT
========DUMP-FILE-{$timeExport}=========================
{$dumpStr}
EOT;
    fwrite($rFile, $sContent);
    fclose($rFile);
    break;
   default:
    return $this->_aShow;
    break;
  }
 }

 private function loopTable() {
  //遍历
  foreach ($this->_aItems as $iItemKey=> $sItemLine) {
   $this->matchElement($iItemKey);
   //print_r($this->_aMatchs);
   $this->match2Show($iItemKey);
   //print_r($this->_aShow);
   //echo "-----------------";
  }
  //print_r($this->_aMatchs);
  //print_r($this->_aShow);
 }

 private function matchElement($iKey) {
  $iMax = 0;
  foreach ($this->_aDict as $iDictKey => $aDictLine) {
   foreach($aDictLine as $sDictElement) {
    $str = $this->_aItems[$iKey];
    if(strstr($str, $sDictElement)){
     //匹配到一个元素，计数器+1
     ++$this->_aMatchs[$iKey]['keyring'][$iDictKey];
    }
   }
   if (!$this->_aMatchs[$iKey]['keyring'][$iDictKey]) {
    //没有匹配到内容
    $this->_aMatchs[$iKey]['keyring'][$iDictKey] = 0;
   }
   if ($iMax< $this->_aMatchs[$iKey]['keyring'][$iDictKey])
    $iMax = $this->_aMatchs[$iKey]['keyring'][$iDictKey];
   $this->_aMatchs[$iKey]['index'] = array(
    'key' => $iDictKey,
    'count' => $iMax
   );

  }
 }

 private function match2Show($iKey) {
  //将对照表转化为结果集
  $multiMatch = array();
  //echo "ikey =". $iKey.", ";
  foreach ($this->_aMatchs[$iKey]['keyring'] as $iMatchKey => $iVal) {
   if ($iVal< $this->_aMatchs[$iKey]['index']['count']) {
    //这个值比最大值小
    //echo "x";
    continue;
   } else {
    //这个值跟最大值相等,将结果累加到记录中
    //echo "y";
    $multiMatch[] = $iMatchKey;
   }
  }
  if (count($multiMatch)> 1)
   //多于一条记录匹配值相同
   $this->_aShow[$iKey] = $multiMatch;
  else
   //匹配值最大值唯一
   $this->_aShow[$iKey] = array($this->_aMatchs[$iKey]['index']['key']);
 }
}

$aItems = array(
 'chinaisbig',
 'whichisnot',
 .....
 上万条
 .....
 'totalyrightforme',
);
$aTable = array(
 'china,is|small',
 'china,big|me',
 .....
 上千条
 .....
 'china,is|big,wich|not,me',
);
$weight = new weight();
$weight->newItems($aItems);
$weight->newTable($aTable);

$weight->getShow('debug');

?>
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