源代码:
<HTML> <HEAD></HEAD> <FONT FACE="'Courier New',Verdana, Arial, Helvetica" SIZE=2> <!DOCTYPE html> <html> <body> <FONT COLOR=#ff0000><?php $number = 123; $txt = vsprintf("With 2 decimals: %1\$.2f With no decimals: %1\$u",array($number)); echo $txt; ?></FONT> </body> </html> </HTML>
运行结果：
<HTML> <HEAD></HEAD> <FONT FACE="'Courier New',Verdana, Arial, Helvetica" SIZE=2> <!DOCTYPE html> <html> <body> <FONT COLOR=#ff0000>With 2 decimals: 123.00 With no decimals: 123</FONT> </body> </html> </HTML>