How to delay for 5 sec and then use `file_get_contents` PHP ?

I use this code for get text from webpage using url.

index.php

```
<?PHP
$text = file_get_contents('https://www.othersite.com/test_1.php');
echo strip_tags($text); // If you only need text not html structure
?>

```

.

.

<https://www.othersite.com/test_1.php>

```
<meta http-equiv="refresh" content="5;url=https://www.othersite.com/test_2.php">

```

<https://www.othersite.com/test_2.php>

```
HELLO WORLD.

```

When i load mysite (index.php). how to delay for 5 sec then use `file_get_contents` and it's will show result `HELLO WORLD.`