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run code in 300+ PHP versions simultaneously
<?php $str = 'Hello World!'; var_dump(\unpack('A16', \pack('A16', $str))[1]); // Decoding "space padded string" strips added spaces var_dump(\unpack('a16', \pack('A16', $str))[1]); // Decoding "null padded string" leaves them there
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(12) "Hello World!" string(16) "Hello World! "

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84.78 ms | 1390 KiB | 4 Q