A simple example of PHP data flow application_PHP tutorial

1  2 $count = 5;
 3 start:
 4 if($count < 5) echo "You can try {$count} time, ";
 5 echo "Put Password: ";
 6 $handle = fopen ("php://stdin","r");
 7 $line = fgets($handle);
 8 if(trim($line) != '123456'){
 9     $count--;
10     if(!$count) goto error;
11     goto start;
12 }
13 goto success;
14 error:
15     echo "Please try after 1 hour! http://www.fanlishuqian.com";
16     goto out;
17 success:
18     echo "Logined!";
19 out:
20 ?>
执行结果：

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