{"record":{"id":"466342cab4a2fdba","repo":"Seldaek/monolog","slug":"could-not-preg-split","errorCode":null,"errorMessage":"Could not preg_split: {} / {}","messagePattern":"Could not preg_split: (.+?) / (.+?)","errorType":"exception","errorClass":"RuntimeException","httpStatus":null,"severity":"error","filePath":"src/Monolog/Handler/SyslogUdpHandler.php","lineNumber":99,"sourceCode":"    {\n        $this->socket->close();\n    }\n\n    /**\n     * @param  string|string[] $message\n     * @return string[]\n     */\n    private function splitMessageIntoLines($message): array\n    {\n        if (\\is_array($message)) {\n            $message = implode(\"\\n\", $message);\n        }\n\n        $lines = preg_split('/$\\R?^/m', (string) $message, -1, PREG_SPLIT_NO_EMPTY);\n        if (false === $lines) {\n            $pcreErrorCode = preg_last_error();\n\n            throw new \\RuntimeException('Could not preg_split: ' . $pcreErrorCode . ' / ' . preg_last_error_msg());\n        }\n\n        return $lines;\n    }\n\n    /**\n     * Make common syslog header (see rfc5424 or rfc3164)\n     */\n    protected function makeCommonSyslogHeader(int $severity, DateTimeInterface $datetime): string\n    {\n        $priority = $severity + $this->facility;\n\n        $pid = getmypid();\n        if (false === $pid) {\n            $pid = '-';\n        }\n\n        $hostname = gethostname();","sourceCodeStart":81,"sourceCodeEnd":117,"githubUrl":"https://github.com/Seldaek/monolog/blob/57eb1028342134e701e77c617565d51b6e5a2a53/src/Monolog/Handler/SyslogUdpHandler.php#L81-L117","documentation":"Error \"Could not preg_split: {} / {}\" thrown in Seldaek/monolog.","triggerScenarios":"Thrown at src/Monolog/Handler/SyslogUdpHandler.php:99 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"57eb1028342134e701e77c617565d51b6e5a2a53","analyzedAt":"2026-08-17T02:36:30.259Z","schemaVersion":2},"datasetVersion":"2026-08-17T04:17:16.089Z"}