<?php $value = 15; $highMap = 0xffffffff00000000; $lowMap = 0x00000000ffffffff; $higher = ($value & $highMap) >>32; $lower = $value & $lowMap; $packed = pack('NN@64', $higher, $lower); list($higher, $lower) = array_values(unpack('N2', $packed)); $originalValue = $higher << 32 | $lower; var_dump($originalValue); var_dump($originalValue == $value);
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