Run »
<!DOCTYPE html> <html> <body> <?php echo(cosh(3) . "<br>"); echo(cosh(-3) . "<br>"); echo(cosh(0) . "<br>"); echo(cosh(M_PI) . "<br>"); echo(cosh(2*M_PI)); ?> </body> </html>
10.067661995778
10.067661995778
1
11.591953275522
267.74676148375