php仅刷新一次页面

Question

I am using PHP for my website and clicked from say myfile.php I want the page to be refreshed only once: The code would be like:

<?php 
 if(called from myfile.php){
 header(refresh:0);
 }
Php code 1;
PHP code 2;
.
.
.
PHP code n;
?>

How to achieve this scenario?

Answer 1

I don't exactly understand what you are trying to do, but I think you will need something similar to this:

<?php
if( isset( $_GET["caller"] ) && $_GET["caller"] == "somevalue" ) {
    // I'm using Location because this will remove the get value
    header( "Location: index.php" );
    exit;
}
?>
<a href="index.php">just go to index</a><br/>
<a href="index.php?caller=somevalue">got to index and refresh?</a>

I just used index.php for testing.

Answer 2

You could do:

if(empty($_GET['status'])){
     header('Location:YourPagesPath.php?status=1');
     exit;
}

Which would reload the page and if the GET parameter isn't present.

Answer 3

In myfile.php set a session variable

session_start();
$_SESSION['calledFrom'] = 'myfile.php';

and check for it in this file

session_start();
if(isset($_SESSION['calledFrom'])) && 'myfile.php' == $_SESSION['calledFrom']) {
    $_SESSION['calledFrom'] = 'thisfile.php';
    header("Refresh:0");
} else {
    $_SESSION['calledFrom'] = 'thisfile.php';
}