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<?php var_dump(mb_regex_set_options('ixmsplne')); var_dump(mb_ereg_replace('(h)', 'strtoupper("\\1")', 'hello', null));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
Fatal error: Uncaught ValueError: Option "e" is not supported in /in/pXd41G:3 Stack trace: #0 /in/pXd41G(3): mb_regex_set_options('ixmsplne') #1 {main} thrown in /in/pXd41G on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
string(6) "ixplnr" string(19) "strtoupper("h")ello"
Output for 4.3.4 - 4.3.11, 4.4.0 - 4.4.9
string(1) "p" string(19) "strtoupper("h")ello"
Output for 4.3.2 - 4.3.3
Fatal error: Call to undefined function: mb_regex_set_options() in /in/pXd41G on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: mb_regex_set_options() in /in/pXd41G on line 3

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