我在网上找到了这个功能，它对我很有帮助。

function formatcurrency($floatcurr, $curr = "USD"){

$currencies['ARS'] = array(2,',','.'); // Argentine Peso

$currencies['AMD'] = array(2,'.',','); // Armenian Dram

$currencies['AWG'] = array(2,'.',','); // Aruban Guilder

$currencies['AUD'] = array(2,'.',' '); // Australian Dollar

$currencies['BSD'] = array(2,'.',','); // Bahamian Dollar

$currencies['BHD'] = array(3,'.',','); // Bahraini Dinar

$currencies['BDT'] = array(2,'.',','); // Bangladesh, Taka

$currencies['BZD'] = array(2,'.',','); // Belize Dollar

$currencies['BMD'] = array(2,'.',','); // Bermudian Dollar

$currencies['BOB'] = array(2,'.',','); // Bolivia, Boliviano

$currencies['BAM'] = array(2,'.',','); // Bosnia and Herzegovina, Convertible Marks

$currencies['BWP'] = array(2,'.',','); // Botswana, Pula

$currencies['BRL'] = array(2,',','.'); // Brazilian Real

$currencies['BND'] = array(2,'.',','); // Brunei Dollar

$currencies['CAD'] = array(2,'.',','); // Canadian Dollar

$currencies['KYD'] = array(2,'.',','); // Cayman Islands Dollar

$currencies['CLP'] = array(0,'','.'); // Chilean Peso

$currencies['CNY'] = array(2,'.',','); // China Yuan Renminbi

$currencies['COP'] = array(2,',','.'); // Colombian Peso

$currencies['CRC'] = array(2,',','.'); // Costa Rican Colon

$currencies['HRK'] = array(2,',','.'); // Croatian Kuna

$currencies['CUC'] = array(2,'.',','); // Cuban Convertible Peso

$currencies['CUP'] = array(2,'.',','); // Cuban Peso

$currencies['CYP'] = array(2,'.',','); // Cyprus Pound

$currencies['CZK'] = array(2,'.',','); // Czech Koruna

$currencies['DKK'] = array(2,',','.'); // Danish Krone

$currencies['DOP'] = array(2,'.',','); // Dominican Peso

$currencies['XCD'] = array(2,'.',','); // East Caribbean Dollar

$currencies['EGP'] = array(2,'.',','); // Egyptian Pound

$currencies['SVC'] = array(2,'.',','); // El Salvador Colon

$currencies['ATS'] = array(2,',','.'); // Euro

$currencies['BEF'] = array(2,',','.'); // Euro

$currencies['DEM'] = array(2,',','.'); // Euro

$currencies['EEK'] = array(2,',','.'); // Euro

$currencies['ESP'] = array(2,',','.'); // Euro

$currencies['EUR'] = array(2,',','.'); // Euro

$currencies['FIM'] = array(2,',','.'); // Euro

$currencies['FRF'] = array(2,',','.'); // Euro

$currencies['GRD'] = array(2,',','.'); // Euro

$currencies['IEP'] = array(2,',','.'); // Euro

$currencies['ITL'] = array(2,',','.'); // Euro

$currencies['LUF'] = array(2,',','.'); // Euro

$currencies['NLG'] = array(2,',','.'); // Euro

$currencies['PTE'] = array(2,',','.'); // Euro

$currencies['GHC'] = array(2,'.',','); // Ghana, Cedi

$currencies['GIP'] = array(2,'.',','); // Gibraltar Pound

$currencies['GTQ'] = array(2,'.',','); // Guatemala, Quetzal

$currencies['HNL'] = array(2,'.',','); // Honduras, Lempira

$currencies['HKD'] = array(2,'.',','); // Hong Kong Dollar

$currencies['HUF'] = array(0,'','.'); // Hungary, Forint

$currencies['ISK'] = array(0,'','.'); // Iceland Krona

$currencies['INR'] = array(2,'.',','); // Indian Rupee

$currencies['IDR'] = array(2,',','.'); // Indonesia, Rupiah

$currencies['IRR'] = array(2,'.',','); // Iranian Rial

$currencies['JMD'] = array(2,'.',','); // Jamaican Dollar

$currencies['JPY'] = array(0,'',','); // Japan, Yen

$currencies['JOD'] = array(3,'.',','); // Jordanian Dinar

$currencies['KES'] = array(2,'.',','); // Kenyan Shilling

$currencies['KWD'] = array(3,'.',','); // Kuwaiti Dinar

$currencies['LVL'] = array(2,'.',','); // Latvian Lats

$currencies['LBP'] = array(0,'',' '); // Lebanese Pound

$currencies['LTL'] = array(2,',',' '); // Lithuanian Litas

$currencies['MKD'] = array(2,'.',','); // Macedonia, Denar

$currencies['MYR'] = array(2,'.',','); // Malaysian Ringgit

$currencies['MTL'] = array(2,'.',','); // Maltese Lira

$currencies['MUR'] = array(0,'',','); // Mauritius Rupee

$currencies['MXN'] = array(2,'.',','); // Mexican Peso

$currencies['MZM'] = array(2,',','.'); // Mozambique Metical

$currencies['NPR'] = array(2,'.',','); // Nepalese Rupee

$currencies['ANG'] = array(2,'.',','); // Netherlands Antillian Guilder

$currencies['ILS'] = array(2,'.',','); // New Israeli Shekel

$currencies['TRY'] = array(2,'.',','); // New Turkish Lira

$currencies['NZD'] = array(2,'.',','); // New Zealand Dollar

$currencies['NOK'] = array(2,',','.'); // Norwegian Krone

$currencies['PKR'] = array(2,'.',','); // Pakistan Rupee

$currencies['PEN'] = array(2,'.',','); // Peru, Nuevo Sol

$currencies['UYU'] = array(2,',','.'); // Peso Uruguayo

$currencies['PHP'] = array(2,'.',','); // Philippine Peso

$currencies['PLN'] = array(2,'.',' '); // Poland, Zloty

$currencies['GBP'] = array(2,'.',','); // Pound Sterling

$currencies['OMR'] = array(3,'.',','); // Rial Omani

$currencies['RON'] = array(2,',','.'); // Romania, New Leu

$currencies['ROL'] = array(2,',','.'); // Romania, Old Leu

$currencies['RUB'] = array(2,',','.'); // Russian Ruble

$currencies['SAR'] = array(2,'.',','); // Saudi Riyal

$currencies['SGD'] = array(2,'.',','); // Singapore Dollar

$currencies['SKK'] = array(2,',',' '); // Slovak Koruna

$currencies['SIT'] = array(2,',','.'); // Slovenia, Tolar

$currencies['ZAR'] = array(2,'.',' '); // South Africa, Rand

$currencies['KRW'] = array(0,'',','); // South Korea, Won

$currencies['SZL'] = array(2,'.',', '); // Swaziland, Lilangeni

$currencies['SEK'] = array(2,',','.'); // Swedish Krona

$currencies['CHF'] = array(2,'.','\''); // Swiss Franc

$currencies['TZS'] = array(2,'.',','); // Tanzanian Shilling

$currencies['THB'] = array(2,'.',','); // Thailand, Baht

$currencies['TOP'] = array(2,'.',','); // Tonga, Paanga

$currencies['AED'] = array(2,'.',','); // UAE Dirham

$currencies['UAH'] = array(2,',',' '); // Ukraine, Hryvnia

$currencies['USD'] = array(2,'.',','); // US Dollar

$currencies['VUV'] = array(0,'',','); // Vanuatu, Vatu

$currencies['VEF'] = array(2,',','.'); // Venezuela Bolivares Fuertes

$currencies['VEB'] = array(2,',','.'); // Venezuela, Bolivar

$currencies['VND'] = array(0,'','.'); // Viet Nam, Dong

$currencies['ZWD'] = array(2,'.',' '); // Zimbabwe Dollar

function formatinr($input){

//CUSTOM FUNCTION TO GENERATE ##,##,###.##

$dec = "";

$pos = strpos($input, ".");

if ($pos === false){

//no decimals

} else {

//decimals

$dec = substr(round(substr($input,$pos),2),1);

$input = substr($input,0,$pos);

}

$num = substr($input,-3); //get the last 3 digits

$input = substr($input,0, -3); //omit the last 3 digits already stored in $num

while(strlen($input) > 0) //loop the process - further get digits 2 by 2

{

$num = substr($input,-2).",".$num;

$input = substr($input,0,-2);

}

return $num . $dec;

}

if ($curr == "INR"){

return formatinr($floatcurr);

} else {

return number_format($floatcurr,$currencies[$curr][0],$currencies[$curr][1],$currencies[$curr][2]);

}

}

echo formatcurrency(39174.00000000001); //1,000,045.25 (USD)

/*formatcurrency(1000045.25, "CHF"); //1'000'045.25

formatcurrency(1000045.25, "EUR"); //1.000.045,25

formatcurrency(1000045, "JPY"); //1,000,045

formatcurrency(1000045, "LBP"); //1 000 045

formatcurrency(1000045.25, "INR"); //10,00,045.25

*/

?>