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PHP UUID v4
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| function UUIDv4() | |
| { | |
| $data = openssl_random_pseudo_bytes(16); | |
| $data[6] = chr(ord($data[6]) & 0x0f | 0x40); // set version to 0100 | |
| $data[8] = chr(ord($data[8]) & 0x3f | 0x80); // set bits 6-7 to 10 | |
| return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4)); | |
| } |
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