3v4l.org

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<?php $input = ''; var_dump(bin2hex($input)); var_dump( $input ); var_dump( iconv(mb_detect_encoding($input, mb_detect_order(), true), "UTF-8", $input) );
Output for 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 - 7.2.33, 7.3.0 - 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
string(8) "01030304" string(4) "" string(4) ""
Output for 7.3.32 - 7.3.33, 7.4.33, 8.0.13
string(8) "01030304" string(4) "" Fatal error: Uncaught Error: Call to undefined function iconv() in /in/mZ4so:7 Stack trace: #0 {main} thrown in /in/mZ4so on line 7
Process exited with code 255.
Output for 5.4.0 - 5.4.45
string(8) "01030304" string(4) "" Fatal error: Call to undefined function iconv() in /in/mZ4so on line 7
Process exited with code 255.
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300.04 ms | 401 KiB | 381 Q