Builtin.php
3 years ago
CRC32.php
3 years ago
CRCInterface.php
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CRCTrait.php
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Google.php
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PHP.php
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Table.php
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CRCInterface.php
60 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Copyright 2019 Google LLC |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | namespace Google\CRC32; |
| 19 | |
| 20 | /** |
| 21 | * CRC calculation interface. |
| 22 | * |
| 23 | * Lots of great info on the different algorithms used: |
| 24 | * https://create.stephan-brumme.com/crc32/ |
| 25 | */ |
| 26 | interface CRCInterface |
| 27 | { |
| 28 | /** |
| 29 | * Updates the CRC calculation with the supplied data. |
| 30 | * |
| 31 | * @param string $data The data |
| 32 | */ |
| 33 | public function update($data); |
| 34 | |
| 35 | /** |
| 36 | * Resets the CRC calculation. |
| 37 | */ |
| 38 | public function reset(); |
| 39 | |
| 40 | /** |
| 41 | * Return the current calculated CRC hash. |
| 42 | * |
| 43 | * @param boolean $raw_output When set to TRUE, outputs raw binary data. |
| 44 | * FALSE outputs lowercase hexits. |
| 45 | * |
| 46 | * @return string Returns a string containing the calculated CRC as |
| 47 | * lowercase hexits unless raw_output is set to true in |
| 48 | * which case the raw binary representation of the CRC is |
| 49 | * returned. |
| 50 | */ |
| 51 | public function hash($raw_output = null); |
| 52 | |
| 53 | /** |
| 54 | * Returns information about the CRC implementation and polynomial. |
| 55 | * |
| 56 | * @return string |
| 57 | */ |
| 58 | public function version(); |
| 59 | } |
| 60 |