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Closed 4 years ago.

i have a deprecated function in my plugin code :

static function vksort(&$arr, $valuekey) {
    $valuekey = sustr::preg_filter('A-Za-z0-9 ', $valuekey);
    uasort($arr, create_function('$a,$b', 'return strcasecmp($a["'.$valuekey.'"], $b["'.$valuekey.'"]);'));
}

how i can change the create_function to function.

Your question should be specific to WordPress. Generic PHP/JS/SQL/HTML/CSS questions might be better asked at Stack Overflow or another appropriate Stack Exchange network site. Third-party plugins and themes are off-topic for this site; they are better asked about at their developers' support routes.

Closed 4 years ago.

i have a deprecated function in my plugin code :

static function vksort(&$arr, $valuekey) {
    $valuekey = sustr::preg_filter('A-Za-z0-9 ', $valuekey);
    uasort($arr, create_function('$a,$b', 'return strcasecmp($a["'.$valuekey.'"], $b["'.$valuekey.'"]);'));
}

how i can change the create_function to function.

• php

• 3rd party plugin dev support is off topic on this stack, you should ask the Ultimate SEO plugin support – Tom J Nowell ♦ Commented Feb 4, 2021 at 15:04

1 Answer 1

Your server runs with a PHP version that doesn't support create_function.

From the PHP manual about create function

Warning This function has been DEPRECATED as of PHP 7.2.0, and REMOVED as of PHP 8.0.0. Relying on this function is highly discouraged.

If you are using PHP 5.3.0 or newer a native anonymous function should be used instead.

If the plugin is yours I would suggest just that, replace the create_function with anonymous function.

If the plugin is not yours and its a paid plugin, contact the plugin author and alert him of the error, ask him to give you the updated version.

If the plugin is free, you can update the code manually (If you know how), but that can be problematic. When the plugin will be updated your changes will be removed. If this is the only option, make sure to save the plugin with the changes somewhere safe so if the plugin will be updated you will have the previous plugin version with your fix for quick re-apply.

EDIT

Same code but with anonymous function

static function vksort(&$arr, $valuekey) {
    $valuekey = sustr::preg_filter('A-Za-z0-9 ', $valuekey);
    uasort($arr, function ($a, $b) use($valuekey) {
        return strcasecmp($a[$valuekey], $b[$valuekey]);
    });
}