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run code in 150+ php & hhvm versions
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<?php $string = 'test' . chr(0) . "\n" . 'test' . "\r\n" ; mb_ereg('(?!.*)[\0\r\n](?!.*)', $string, $matches); var_dump($matches);
based on fFk15
Output for 7.1.0
array(0) { }
Output for 4.3.4 - 7.0.14
NULL
Output for 4.3.2 - 4.3.3
Fatal error: Call to undefined function: mb_ereg() in /in/SoB2I on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: mb_ereg() in /in/SoB2I on line 7