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<?php $str = " \begin{verbatim} dupa zbita \end \end{verbatim} I chuj!!! \end{verbatim}"; $str = preg_replace('/\\\\begin\s*\\{verbatim\\}.*\\\\end\s*\\{verbatim\\}/', 'VERBATIM', $str); echo $str;
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
\begin{verbatim} dupa zbita nd nd{verbatim} I chuj!!! nd{verbatim}
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
VERBATIM

preferences:
249.51 ms | 403 KiB | 362 Q