1  <?php
 2  do {
 3  	$user_choice = readline("Choose rock, paper, or scissors: ");
 4  	$user_choice = strtolower($user_choice);
 5  
 6  	$choices = array('rock', 'paper', 'scissors');
 7  	while (!in_array($user_choice, $choices)) {
 8  		$user_choice = readline("Choose rock, paper, or scissors: ");
 9  		$user_choice = strtolower($user_choice);
10  	}
11  	$play_again = true;
12  	$computer_choice = $choices[array_rand($choices)];
13  
14  	if ($user_choice == $computer_choice) {
15  		echo "It's a tie!\n";
16  	} elseif (($user_choice == 'rock' && $computer_choice == 'scissors') || 
17  			  ($user_choice == 'paper' && $computer_choice == 'rock') || 
18  			  ($user_choice == 'scissors' && $computer_choice == 'paper')) {
19  		echo "Congratulations! You won! The computer chose $computer_choice.\n";
20  		$play_again = false;
21  	} else {
22  		echo "Sorry, you lost. The computer chose $computer_choice.\n";
23  		$play_again = false;
24  	}
25  } while ($play_again == true);
26  ?>