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<?php set_error_handler(function ($_, $errstr) use ($pattern) { restore_error_handler(); echo 'handler:' . var_export($errstr, true) . \PHP_EOL; }); echo 'execution:' . \var_export(\preg_match('//u', "\xc3\x28"), true) . \PHP_EOL; echo 'error:' . var_export(\preg_last_error(), true) . \PHP_EOL; echo 'compilation:' . \var_export(\preg_match('/(/', 'a'), true) . \PHP_EOL; echo 'error:' . var_export(\preg_last_error(), true) . \PHP_EOL; \restore_error_handler(); echo 'ok:' . var_export(\preg_match('/./', 'a'), true) . \PHP_EOL; echo 'error:' . var_export(\preg_last_error(), true) . \PHP_EOL;
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $pattern in /in/2mqev on line 3 execution:false error:4 handler:'preg_match(): Compilation failed: missing closing parenthesis at offset 1' compilation:false error:1 ok:1 error:0

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