| 3,7 → 3,7 |
|---|
| /* |
| * fixed_length_microtime() for PHP |
| * Copyright 2022 Daniel Marschall, ViaThinkSoft |
| * Version 2022-03-03 |
| * Version 2022-03-08 |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| 18,21 → 18,17 |
|---|
| * limitations under the License. |
| */ |
| |
| function fixed_length_microtime() { |
| function fixed_length_microtime($unique=true) { |
| // This function outputs a fixed-length microtime (can be used for sorting) |
| // Additionally, it ensures that the output is always different by waiting 1 microsecond |
| // Optionally, it ensures that the output is always different by waiting 1 microsecond |
| |
| $ary = explode('.', (string)microtime(true)); |
| if (!isset($ary[1])) $ary[1] = 0; |
| $ret = $ary[0].'_'.str_pad($ary[1], 4, '0', STR_PAD_RIGHT); |
| |
| while (true) { |
| $ary = explode('.', (string)microtime(true)); |
| if (!isset($ary[1])) $ary[1] = 0; |
| $ret2 = $ary[0].'_'.str_pad($ary[1], 4, '0', STR_PAD_RIGHT); |
| // Wait until the value changes. This ensures that the microtime will never be the same |
| // sleep(0.1) does not work for some reason. |
| if ($ret != $ret2) break; |
| if ($unique) { |
| // Make sure value changes by waiting 1 microsecond. |
| usleep(1); |
| } |
| |
| return $ret; |