3 var_dump(preg_match());
4 var_dump(preg_match_all());
5 var_dump(preg_match_all('//', '', $dummy, 0xdead));
7 var_dump(preg_quote());
8 var_dump(preg_quote(''));
10 var_dump(preg_replace('/(.)/', '${1}${1', 'abc'));
11 var_dump(preg_replace('/.++\d*+[/', 'for ($', 'abc'));
12 var_dump(preg_replace('/(.)/e', 'for ($', 'abc'));