reset() - “Strict Standards: Only variables should be passed by reference” [duplicate]

问题

I am currently moving a website over for a client. Their old host must be using an old version of PHP from what I can gather. The site is currently working on their current host. I am working to move this to a new host for them and I am getting the following error:

PHP Strict Standards: Only variables should be passed by reference in /home/parcelt2/core/public_html/loader.php on line 17

Below is a section of code with line 17 marked out

$uri = parse_url($_SERVER['REQUEST_URI']);
if (substr($uri['path'], -1, 1) == '/' && !sizeof($_POST)) {
$new_uri = substr($uri['path'], 0, -1);
if (strlen($new_uri) > 0) {
    $page = reset(explode('/', $new_uri));  //line 17
    if (!in_array($page, $exempt_requests)) {
        if (isset($uri['query']) && strlen($uri['query']) > 0) {
            $new_uri .= '?' . $uri['query'];
        }
        header('HTTP/1.1 301 Moved Permanently');
        header('Location: ' . $new_uri, true, 301);
        exit;
    }
}
}

Would anyone be able to provide a fix or some suggestion on how to fix this? I have tried reading other SO posts about this error but have found them hard to understand.

Thank you

回答1:

reset() takes a reference to an array (variable) so it will not work with the result of a function call.

You need to do something like this:

$arr = explode('/', $new_uri);
$page = reset($arr);

However, the array returned by explode() will already have its internal pointer set to the first element. You shouldn't need to call reset at all.

来源：https://stackoverflow.com/questions/24438708/reset-strict-standards-only-variables-should-be-passed-by-reference

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php

reference

strict