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run code in 300+ PHP versions simultaneously
<?php $body = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <META content="text/html; charset=windows-1251" http-equiv=Content-Type> <META name=GENERATOR content="MSHTML 11.00.9600.17105"> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <FONT size=2><DIV align=center> <TABLE borderColor=#0e0016 cellSpacing=2 borderColorDark=#ba0000 cellPadding=0 width=860 bgColor=#f5f5fa borderColorLight=#ba0000 border=0></TABLE> </BODY> </HTML>'; $body2 = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD><META content="text/html; charset=windows-1251" http-equiv=Content-Type><META name=GENERATOR content="MSHTML 11.00.9600.17105"><STYLE></STYLE></HEAD><BODY bgColor=#ffffff><FONT size=2><BODY>test<BODY>test2</BODY></BODY><DIV align=center><TABLE borderColor=#0e0016 cellSpacing=2 borderColorDark=#ba0000 cellPadding=0 width=860 bgColor=#f5f5fa borderColorLight=#ba0000 border=0></TABLE></BODY></HTML>'; $pattern = '#.*charset=?(.*)".*#is'; preg_match($pattern, $body2, $matches); var_dump($matches);

preferences:
42.9 ms | 402 KiB | 5 Q