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把全角数字转为半角数字

把全角数字转为半角数字
  //

  function getalabnum($fnum)
  {
   $nums = array("0","1","2","3","4","5","6","7","8","9","+","-","%",".");
   $fnums = "0123456789+-%.";
   for($i=0;$i<count($nums);$i++){
    if($nums[$i]==$fnum) return $fnums[$i];
   }
   return $fnum;
  }


  
  //实例应用
 

  echo getalabnum('6'); // 6
补充:Php教程,Php常用代码 
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