Question

我认为我编写的代码本身试图使其工作是非常自我解释的。我第一次使用while循环时，我确实搜索了其他类似的问题，还here但我无法解决这个问题。

现在，代码只出于某种原因运行一次，如果对于某些随机机会，array_rand中的数字为6则返回是，否则它甚至不会回显否什么时候应该，因为它在while循环中，但显然我错了。

/**
* Check if param number is between 5 and 7
* @param {int} $number - number
*/
function check($number){
  if($number >= 5 && $number <= 7){
    return array('message' => 'Number is between the min and the max');
  }

  return false;
}

// Random numbers for testing 
$info = array(1,2,3,4,5,6,7,8,9,10);

// Get a random number from the array
$info_rand = $info[array_rand($info)];

// run function by passing a random number from the array
$run_loop = check($info_rand);

// here we should keep running the function until it returns true then break, otherwise just echo no so we know it's running
while(true){
  if($run_loop){
    echo 'Yes';
    break;
  } else {
    echo 'no';
  }
}

https://eval.in/953478

Answer 1

看看以下变化：

/**
* Check if param number is between 5 and 7
* @param {int} $number - number
*/
function check($number){
  if($number >= 5 && $number <= 7){
  return array('message' => 'Number is between the min and the max');
 }

 return false;
}


// Random numbers for testing 
$info = array(1,2,3,4,5,6,7,8,9,10);
// here we should keep running the function until it returns true then 
// break, otherwise just echo no so we know it's running
while(true){

   // Get a random number from the array
   $info_rand = $info[array_rand($info)];

   // run function by passing a random number from the array
   $run_loop = check($info_rand);
   if($run_loop){
     echo 'Yes';
     break;
   } else {
    echo 'no';
   }
}

Answer 2

什么都没有改变$ run_loop变量

/**
* Check if param number is between 5 and 7
* @param {int} $number - number
*/
function check($number){
  if($number >= 5 && $number <= 7){
    return array('message' => 'Number is between the min and the max');
  }

  return false;
}

// Random numbers for testing 
$info = array(1,2,3,4,5,6,7,8,9,10);

// here we should keep running the function until it returns true then break, otherwise just echo no so we know it's running
while(true){
  //this will randomize each time
  //before it would never change
  if(check($info[rand(0,count($info))])){
    echo 'Yes';
    break;
  } else {
    echo 'no';
  }
}

如何在while循环中运行函数，直到它返回true？

2 个答案: