PHP function to convert Arabic numerals to Chinese numerals_PHP tutorial

function ch_num($num,$mode=true) {
$char = array("zero","一","二","三","四","五" ,"鲁","旒","八","玖");
$dw = array("","十","百","千","","万","千亿" ","mega");
$dec = "point";
$retval = "";

if($mode)
preg_match_all("/^0*(d* ).?(d*)/",$num, $ar);
else
preg_match_all("/(d*).?(d*)/",$num, $ar);

if($ar[2][0] != "")
$retval = $dec . ch_num($ar[2][0],false); //If there are decimals, recurse first Processing decimals
if($ar[1][0] != "") {
$str = strrev($ar[1][0]);
for($i=0;$ i$out[$i] = $char[$str[$i]];
if($mode) {
$out[$i ] .= $str[$i] != "0"? $dw[$i%4] : "";
if($str[$i]+$str[$i-1] == 0 )
$out[$i] = "";
if($i%4 == 0)
$out[$i] .= $dw[4+floor($i/4) ];
}
}
$retval = join("",array_reverse($out)) . $retval;
}
return $retval;
}

//echo ch_num("12345006789001.123");
//echo ch_num("880079.1234");
echo ch_num("300045.0123");

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