PHP全角数字转半角数字过滤非数字字符

function GetAlabNum($fnum)
{
 $nums = array("０","１","２","３","４","５","６","７","８","９");
 $fnums = array("0","1","2","3","4","5","6","7","8","9");
 $fnum = str_replace($nums,$fnums,$fnum);
 $fnum = ereg_replace("[^0-9\.-]",'',$fnum);
 if($fnum=='')
 {
  $fnum=0;
 }
 return $fnum;
}
echo '当前网址：'.GetAlabNum('你好１２３４５６７８９世界！！！');
运行结果示例：https://blog.guanjianci.net/codetest/php/GetAlabNum.php

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