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                ## number_format 以千位分隔符方式格式化一個數字 ~~~ string number_format ( float $number [, int $decimals = 0 ] ) string number_format ( float $number , int $decimals = 0 , string $dec_point = "." , string $thousands_sep = "," ) ~~~ 本函數可以接受1個、2個或者4個參數(注意:不能是3個): 如果只提供第一個參數,`number`的小數部分會被去掉 并且每個千位分隔符都是英文小寫逗號"," 如果提供兩個參數,`number`將保留小數點后的位數到你設定的值,其余同樓上 如果提供了四個參數,`number` 將保留decimals個長度的小數部分, 小數點被替換為`dec_point`,千位分隔符替換為`thousands_sep` > number 你要格式化的數字 > decimals 要保留的小數位數 > dec_point 指定小數點顯示的字符 > thousands_sep 指定千位分隔符顯示的字符 **eg** ~~~ <?php $number = 1234.56; // english notation (default) $english_format_number = number_format($number); // 1,235 // French notation $nombre_format_francais = number_format($number, 2, ',', ' '); // 1 234,56 $number = 1234.5678; // english notation without thousands separator $english_format_number = number_format($number, 2, '.', ''); // 1234.57 ?> ~~~
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