PHP：通过插入逗号来格式化数字字符串

问题描述：

I need a way to convert a number into formatted way by inserting comma at suitable places. Can it be done using regex?

Example:

12345 => 12,345
1234567 =>1,234,567

我需要一种方法，通过在适当的位置插入逗号将数字转换为格式化方式。是否可以使用正则表达式完成？ p>

示例： p>

  12345 =＆gt;  12,345 
1234567 =＆gt; 1,234,567 
  code>  pre> 
  div>

答

There is no need go for regex , you can easily do it using the number_format() function.

echo number_format(12345); // prints 12,345
echo number_format(1234567); // prints 1,234,567

$arr = array(
        1234567890,
        123456789,
        12345678,
        1234567,
        123456,
        12345,
        1234,
        123,
    );

foreach($arr as $num) {
    echo number_format($num)."
";
}

Output:

1,234,567,890
123,456,789
12,345,678
1,234,567
123,456
12,345
1,234
123

答

For Integer value

$intVal=2151;

echo number_format((string)$intVal); // output -> 2,151

PHP：通过插入逗号来格式化数字字符串

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