Guessing game in php.

guess-what.php

<?php

$play_count = 0;
$correct_guesses = 0;
$guess_high = 0;
$guess_low = 0;

echo "I'm going to think of numbers between 1 and 10 (inclusive). Do you think you can guess correctly?\n";

function guessNumber() {
  
  global $guess_high, $guess_low, $correct_guesses, $play_count;
  
  $play_count++;
  $num = rand(1, 10);
  echo "\nMake your guess...\n";
  
  $guess = readline(">> ");
  $guess = intval($guess);
  echo "Round: $play_count\nMy Number: $num\nYour guess: $guess";
  
  if ($guess === $num){
      $correct_guesses++; 
  }
  if ($guess > $num){
      $guess_high++;
  }
  if ($guess < $num){
      $guess_low++;
  }
  
}

guessNumber();
guessNumber();
guessNumber();
guessNumber();
guessNumber();
guessNumber();
guessNumber();
guessNumber();
guessNumber();
guessNumber();

$percent_correct = $correct_guesses/$play_count * 100;
echo "\nAfter $play_count rounds, here are some facts about your guessing:\nYou guessed the number correctly $percent_correct% of the time.\n";

if ($guess_high > $guess_low){
    echo "When you guessed wrong, you tended to guess high";
} else if ($guess_high < $guess_low) {
    echo "When you guessed wrong, you tended to guess low";
}