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<?php function gdr_encode($val) { $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!='; $base = strlen($chars); $str = ''; while ($val > 0) { $str .= $chars[$val % $base]; $val = (int)($val / $chars); } return $str; } function gdr_decode($val) { return base_convert(strval($val), 16, 10); } $vals = array(0, 1, 99, 100, 255, 256, 999, 1000, 9999, 10000, 65535, 65536, 99999, 100000, 999999, 1000000, 4294967295, 4294967296); foreach ($vals as $val) { $enc = json_encode(gdr_encode($val)); $dec = json_encode(gdr_decode($enc)); $val = json_encode($val); if (strlen($enc) > strlen($val)) { echo "$enc $val WORSE\n"; } else if (strlen($enc) == strlen($val)) { echo "$enc $val EQUAL\n"; } else { echo "$enc $val\n"; } }
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Invalid characters passed for attempted conversion, these have been ignored in /in/Nd5k8 on line 15 "" 0 WORSE Fatal error: Uncaught TypeError: Unsupported operand types: int / string in /in/Nd5k8:9 Stack trace: #0 /in/Nd5k8(20): gdr_encode(1) #1 {main} thrown in /in/Nd5k8 on line 9
Process exited with code 255.

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