W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
<!DOCTYPE html> <html> <body> <?php $str = "Welcome to Shanghai!"; echo $str."<br>"; echo addcslashes($str,'A..Z')."<br>"; echo addcslashes($str,'a..z')."<br>"; echo addcslashes($str,'a..g'); ?> </body> </html>