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<?php var_dump( mb_encode_numericentity( "\xf4\x90\x80\x80", array( 0x000000, 0x10FFFF, 0x000000, 0xFFFFFF ), 'UTF-8', true ) );
Output for 5.4.20 - 5.4.45, 5.5.2 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.6 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(4) "????"
Output for 5.4.0 - 5.4.19, 5.5.0 - 5.5.1, 8.1.0 - 8.1.5
string(3) "???"
Output for 5.3.0 - 5.3.29
Warning: mb_encode_numericentity() expects exactly 3 parameters, 4 given in /in/nYbbZ on line 5 NULL
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
Warning: Wrong parameter count for mb_encode_numericentity() in /in/nYbbZ on line 5 NULL

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233.74 ms | 402 KiB | 355 Q