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<?php // Source: https://bugs.php.net/bug.php?id=66182 class before_body_foo_filter extends php_user_filter { function filter($in, $out, &$consumed, $closing) { // this exit; causes a segfault exit; } } stream_filter_register('before_body_foo', 'before_body_foo_filter'); $fp = fopen('php://output', 'w'); stream_filter_append($fp, 'before_body_foo', STREAM_FILTER_WRITE, 'YES'); fwrite($fp, 'hello');
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Return type of before_body_foo_filter::filter($in, $out, &$consumed, $closing) should either be compatible with php_user_filter::filter($in, $out, &$consumed, bool $closing): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/c57Ls on line 6 Warning: fwrite(): Unprocessed filter buckets remaining on input brigade in /in/c57Ls on line 17
Output for 8.0.0 - 8.0.30
Warning: fwrite(): Unprocessed filter buckets remaining on input brigade in /in/c57Ls on line 17
Output for 5.4.28 - 5.4.45, 5.5.12 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Output for 5.0.1 - 5.0.5, 5.1.0 - 5.1.6, 5.2.7 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.27, 5.5.0 - 5.5.11

Process exited with code 139.
Output for 5.2.0 - 5.2.6
Warning: Unknown: failed to call filter function in Unknown on line 0
Output for 5.0.0

Process exited with code 132.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Class before_body_foo_filter: Cannot inherit from undefined class php_user_filter in /in/c57Ls on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Class before_body_foo_filter: Cannot inherit from undefined class php_user_filter in /in/c57Ls on line 4
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