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<?php $map = ['O'=>'W', 'I'=>'X', '1'=>'Y', '0'=>'Z']; $testNumber = 99999; $enc = str_pad( str_replace( array_keys($map), array_values($map), base_convert($testNumber, 10, 32) ), 6, // Just for demo '0', STR_PAD_LEFT, ); $dec = (int)base_convert( str_replace( array_values($map), array_keys($map), ltrim($enc, '0') ), 32, 10 ); echo $enc, PHP_EOL, $dec; assert($testNumber === $dec);
Output for git.master_jit, git.master, rfc.property-hooks
003Ykv 99999

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