//把全角数字转为半角数字

functionGetAlabNum($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','.','-','+',':');

$fnlen=count($fnums);

for($i=0;$i<$fnlen;$i++)$fnum=str_replace($nums[$i],$fnums[$i],$fnum);

$slen=strlen($fnum);

$oknum='';

for($i=0;$i<$slen;$i++){

if(ord($fnum[$i])>0x80)$i++;

else$oknum.=$fnum[$i];

}

if($oknum=="")$oknum=0;

return$oknum;

}