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<?php mb_internal_encoding('UTF-16'); var_dump(mb_strrpos("abc abc abc", "abc", "UTF-8"));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught TypeError: mb_strrpos(): Argument #3 ($offset) must be of type int, string given in /in/LsC9u:3 Stack trace: #0 /in/LsC9u(3): mb_strrpos('abc abc abc', 'abc', 'UTF-8') #1 {main} thrown in /in/LsC9u on line 3
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Deprecated: mb_strrpos(): Passing the encoding as third parameter is deprecated. Use an explicit zero offset in /in/LsC9u on line 3 int(8)
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, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.31, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
int(8)

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