Adds PHP 8.4

[nickschuch]

#162

[jmjoy]

1. You can add #[allow(static_mut_refs)] to solve the warning first

   error: creating a mutable reference to mutable static is discouraged
      --> phper/src/errors.rs:487:31
       |
   487 |                 .push(replace(&mut eg!(exception), null_mut()));
       |                               ^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static
   

2. You can try to add these functions to the blocklist of phper-sys/build.rs

   error: `extern` block uses type `u128`, which is not FFI-safe
       --> /Users/runner/work/phper/phper/target/release/build/phper-sys-2fa65f16eaf39386/out/php_bindings.rs:9760:44
        |
   9760 |     pub fn zend_startup(utility_functions: *mut zend_utility_functions);
        |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
   

[nickschuch]

Down to zend_random_bytes_insecure. I'm not sure how to handle that.

[jmjoy]

Maybe you should block all functions that not FFI-safe.

[nickschuch]

I tried zend_random_bytes_insecure but it didn't work. I'm sorry. I'm still quite new to rust.

[jmjoy]

Let me try try.