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UUIDv7 in PHP
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| <?php | |
| // uuidv7 see https://www.rfc-editor.org/rfc/rfc9562#name-uuid-version-7 | |
| function uuidv7() { | |
| // current timestamp in ms | |
| $timestamp = intval(microtime(true) * 1000); | |
| return sprintf( | |
| '%02x%02x%02x%02x-%02x%02x-%04x-%04x-%012x', | |
| // first 48 bits are timestamp based | |
| ($timestamp >> 40) & 0xFF, | |
| ($timestamp >> 32) & 0xFF, | |
| ($timestamp >> 24) & 0xFF, | |
| ($timestamp >> 16) & 0xFF, | |
| ($timestamp >> 8) & 0xFF, | |
| $timestamp & 0xFF, | |
| // 16 bits: 4 bits for version (7) and 12 bits for rand_a | |
| random_int(0, 0x0FFF) | 0x7000, | |
| // 16 bits: 4 bits for variant where 2 bits are fixed 10 and next 2 are random to get (8-9, a-b) | |
| // next 12 are random | |
| random_int(0, 0x3FFF) | 0x8000, | |
| // random 48 bits | |
| random_int(0, 0xFFFFFFFFFFFF), | |
| ); | |
| } | |
| for ($i = 0; $i < 10; $i++) { | |
| $uuid = uuidv7(); | |
| // echo $uuid . PHP_EOL; | |
| if (!preg_match("/^[0-9a-f]{8}-[0-9a-f]{4}-7[0-9a-f]{3}-[8-9a-b][0-9a-f]{3}-[0-9a-f]{12}$/m", $uuid)) { | |
| echo $uuid . ' not valid uuidv7'; | |
| } | |
| } |
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@grrinch done! also updates the test online link.
Thanks for the catch.
Currently working from PHP 7.3.0 to current (at this time) PHP 8.3.21