Opcache does not handle class hoisting with @opcache_compile_file

[zavierboyd]

Description

The following code:

// test.php
<?php

$x = new HelloWorld();

class HelloWorld {}

// exec.php
<?php
@opcache_compile_file(__DIR__.'/test.php');
require_once __DIR__.'/test.php';

When I ran php exec.php it
Resulted in this output:

[30-May-2025 08:10:33 UTC] PHP Fatal error:  Uncaught Error: Class "HelloWorld" not found in /usr/src/wordpress/wp-includes/SimplePie/test.php:3
Stack trace:
#0 /usr/src/wordpress/wp-includes/SimplePie/exec.php(3): require_once()
#1 {main}
  thrown in /usr/src/wordpress/wp-includes/SimplePie/test.php on line 3

But I expected this output instead:

empty as it does not return anything

When just running test.php it runs successfully.

This causes an error in Wordpress file /usr/src/wordpress/wp-includes/SimplePie/autoloader.php when we use Opcache preloading preventing it from working properly.

PHP Version

PHP 8.1.32 (cli) (built: Apr 29 2025 20:07:59) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.1.32, Copyright (c) Zend Technologies
    with Zend OPcache v8.1.32, Copyright (c), by Zend Technologies

Operating System

No response

[nielsdos]

Can confirm this happens on 8.3+ too.
Strangely, zend_accel_do_delayed_early_binding() does appear to get called for test.php. I'll take a look.

[nielsdos]

zend_accel_do_delayed_early_binding() only performs early binding if the class is linked or has a parent that's registered.
Because zend_compile_class_decl() skips setting ZEND_ACC_LINKED for opcache_compile_file(), the class is therefore not early bound.
To solve this, simple classes should get their ZEND_ACC_LINKED flag set when trying to early bind with execution enabled.