W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
<!DOCTYPE html> <html> <body> <?php echo(tanh(M_PI_4) . "<br>"); echo(tanh(0.50) . "<br>"); echo(tanh(-0.50) . "<br>"); echo(tanh(5) . "<br>"); echo(tanh(10) . "<br>"); echo(tanh(-5) . "<br>"); echo(tanh(-10)); ?> </body> </html>