将PHP 5.6代码转换为5.4 - 意外的'。'

Question

i have prestashop module that is compatible only with PHP 5.6+, but my site is running PHP 5.4, so i am converting the code to PHP 5.4

I have this problem i cant figure out. Its: syntax error, unexpected '.', expecting ')'

public static $files = array (
    '15527491986d870fa01b8ac01c3aae85' => __DIR__ . '/../..' . '/src/GdprCustomScript.php',
);

I suppose the problem is the dot after DIR, should i change the dot for comma?

Answer 1

PHP 5.4 and 5.6 have both reached end-of-life. You should be migrating your code to PHP 7.1 or later, not to an older version.

Regardless -- constant expressions were a new feature in PHP 5.6. There is no way to declare a static class variable using an expression in PHP 5.4.

In theory, you could initialize the variable in code following the class, e.g.

class Whatever {
    …
    public static $files;
    …
}

Whatever::$files = array( … );

However, I'll reiterate that you need to migrate to a supported version of PHP. PHP 5.4 has been end-of-life since September 2015. If your web host does not support any newer versions, you need to find a better web host.