PHP IF语句和循环

Question

我有这个PHP代码：

<?php
if(isset($_POST['gen'])){              

$genapi = "http://domain.com/api.php";
$result5 = htmlentities(file_get_contents($genapi));

list($first, $last) = explode(':', $result5);

header('Location: minecraft.php?line='.$result5);

}
?>

如果“$ result5”返回“no”然后等待2秒然后再试一次但是如果“$ result5”没有返回“no”则会运行标题行。

Answer 1

if(isset($_POST['gen'])){ 

$loop = true;

  while($loop){
    $genapi = "http://domain.com/api.php";
    $result5 = htmlentities(file_get_contents($genapi));

    if($result5 !== 'no'){ // check your $result5 based on the value it returns
       $loop = false;
       list($first, $last) = explode(':', $result5);
       header('Location: minecraft.php?line='.$result5);
    }
    else{
      sleep(2);
    }

  }
}