Show Output
<!DOCTYPE html> <html lang="en"> <head> <title>PHP Get Square Root of a Number</title> </head> <body> <?php echo sqrt(9) . "<br>"; // 0utputs: 3 echo sqrt(25) . "<br>"; // 0utputs: 5 echo sqrt(10) . "<br>"; // 0utputs: 3.1622776601684 echo sqrt(-16) . "<br>"; // 0utputs: NAN ?> </body> </html>
