php 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;$i<=9;$i++) $fnum = str_replace($nums[$i],$fnums[$i],$fnum);
$fnum = ereg_replace(“[^0-9\.]|^0{1,}”,””,$fnum);
if($fnum==””) $fnum=0;
return $fnum;
}

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