将12345678.9输出成12,345,678.90

将12345678.9输出成12,345,678.90

PHP中有个函数number_format,函数原型:

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string number_format

(

float number,

int decimals,

string dec_point,

string thousands_sep

)

举个例子:

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<?

$num = 12345678.9;

echo number_format($num).'<br>'; //会4舍5入

echo number_format($num,2).'<br>';

echo number_format($num,2,':').'<br>'; //这种写法是错误的

echo number_format($num,2,':','-').'<br>';

?>

输出结果为:

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12,345,679

12,345,678,90

Warning: Wrong parameter count for number_format() in /data/homepage/test/number_format.php on line 5

12-345-678:90