源代码:
<HTML> <HEAD></HEAD> <FONT FACE="'Courier New',Verdana, Arial, Helvetica" SIZE=2> <!DOCTYPE html> <html> <body> <FONT COLOR=#ff0000><?php $arr = array('Hello','World!','Beautiful','Day!'); echo join(" ",$arr)." "; echo join("+",$arr)." "; echo join("-",$arr)." "; echo join("X",$arr); ?></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>Hello World! Beautiful Day! Hello+World!+Beautiful+Day! Hello-World!-Beautiful-Day! HelloXWorld!XBeautifulXDay!</FONT> </body> </html> </HTML>