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<?php var_dump( @iconv_strlen("\xc3\x28", "UTF-8")); #echo mb_strlen("\xc3\x28", "UTF-8");
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.34, 5.6.0 - 5.6.20, 5.6.28, 7.0.0 - 7.0.5, 7.0.14 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(false)
Output for 7.0.6 - 7.0.11, 7.3.32 - 7.3.33, 7.4.33, 8.0.13
Fatal error: Uncaught Error: Call to undefined function iconv_strlen() in /in/l3gO7:4 Stack trace: #0 {main} thrown in /in/l3gO7 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.5.35 - 5.5.38, 5.6.21 - 5.6.26

Process exited with code 255.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/l3gO7 on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1

preferences:
222.94 ms | 401 KiB | 355 Q