functions.php 8.2 KB

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  1. <?php
  2. namespace Qiniu;
  3. use Qiniu\Config;
  4. if (!defined('QINIU_FUNCTIONS_VERSION')) {
  5. define('QINIU_FUNCTIONS_VERSION', Config::SDK_VER);
  6. /**
  7. * 计算文件的crc32检验码:
  8. *
  9. * @param $file string 待计算校验码的文件路径
  10. *
  11. * @return string 文件内容的crc32校验码
  12. */
  13. function crc32_file($file)
  14. {
  15. $hash = hash_file('crc32b', $file);
  16. $array = unpack('N', pack('H*', $hash));
  17. return sprintf('%u', $array[1]);
  18. }
  19. /**
  20. * 计算输入流的crc32检验码
  21. *
  22. * @param $data 待计算校验码的字符串
  23. *
  24. * @return string 输入字符串的crc32校验码
  25. */
  26. function crc32_data($data)
  27. {
  28. $hash = hash('crc32b', $data);
  29. $array = unpack('N', pack('H*', $hash));
  30. return sprintf('%u', $array[1]);
  31. }
  32. /**
  33. * 对提供的数据进行urlsafe的base64编码。
  34. *
  35. * @param string $data 待编码的数据,一般为字符串
  36. *
  37. * @return string 编码后的字符串
  38. * @link http://developer.qiniu.com/docs/v6/api/overview/appendix.html#urlsafe-base64
  39. */
  40. function base64_urlSafeEncode($data)
  41. {
  42. $find = array('+', '/');
  43. $replace = array('-', '_');
  44. return str_replace($find, $replace, base64_encode($data));
  45. }
  46. /**
  47. * 对提供的urlsafe的base64编码的数据进行解码
  48. *
  49. * @param string $str 待解码的数据,一般为字符串
  50. *
  51. * @return string 解码后的字符串
  52. */
  53. function base64_urlSafeDecode($str)
  54. {
  55. $find = array('-', '_');
  56. $replace = array('+', '/');
  57. return base64_decode(str_replace($find, $replace, $str));
  58. }
  59. /**
  60. * 二维数组根据某个字段排序
  61. * @param array $array 要排序的数组
  62. * @param string $key 要排序的键
  63. * @param string $sort 排序类型 SORT_ASC SORT_DESC
  64. * return array 排序后的数组
  65. */
  66. function arraySort($array, $key, $sort = SORT_ASC)
  67. {
  68. $keysValue = array();
  69. foreach ($array as $k => $v) {
  70. $keysValue[$k] = $v[$key];
  71. }
  72. array_multisort($keysValue, $sort, $array);
  73. return $array;
  74. }
  75. /**
  76. * Wrapper for JSON decode that implements error detection with helpful
  77. * error messages.
  78. *
  79. * @param string $json JSON data to parse
  80. * @param bool $assoc When true, returned objects will be converted
  81. * into associative arrays.
  82. * @param int $depth User specified recursion depth.
  83. *
  84. * @return mixed
  85. * @throws \InvalidArgumentException if the JSON cannot be parsed.
  86. * @link http://www.php.net/manual/en/function.json-decode.php
  87. */
  88. function json_decode($json, $assoc = false, $depth = 512)
  89. {
  90. static $jsonErrors = array(
  91. JSON_ERROR_DEPTH => 'JSON_ERROR_DEPTH - Maximum stack depth exceeded',
  92. JSON_ERROR_STATE_MISMATCH => 'JSON_ERROR_STATE_MISMATCH - Underflow or the modes mismatch',
  93. JSON_ERROR_CTRL_CHAR => 'JSON_ERROR_CTRL_CHAR - Unexpected control character found',
  94. JSON_ERROR_SYNTAX => 'JSON_ERROR_SYNTAX - Syntax error, malformed JSON',
  95. JSON_ERROR_UTF8 => 'JSON_ERROR_UTF8 - Malformed UTF-8 characters, possibly incorrectly encoded'
  96. );
  97. if (empty($json)) {
  98. return null;
  99. }
  100. $data = \json_decode($json, $assoc, $depth);
  101. if (JSON_ERROR_NONE !== json_last_error()) {
  102. $last = json_last_error();
  103. throw new \InvalidArgumentException(
  104. 'Unable to parse JSON data: '
  105. . (isset($jsonErrors[$last])
  106. ? $jsonErrors[$last]
  107. : 'Unknown error')
  108. );
  109. }
  110. return $data;
  111. }
  112. /**
  113. * 计算七牛API中的数据格式
  114. *
  115. * @param string $bucket 待操作的空间名
  116. * @param string $key 待操作的文件名
  117. *
  118. * @return string 符合七牛API规格的数据格式
  119. * @link http://developer.qiniu.com/docs/v6/api/reference/data-formats.html
  120. */
  121. function entry($bucket, $key)
  122. {
  123. $en = $bucket;
  124. if (!empty($key)) {
  125. $en = $bucket . ':' . $key;
  126. }
  127. return base64_urlSafeEncode($en);
  128. }
  129. /**
  130. * array 辅助方法,无值时不set
  131. *
  132. * @param array $array 待操作array
  133. * @param string $key key
  134. * @param string $value value 为null时 不设置
  135. *
  136. * @return array 原来的array,便于连续操作
  137. */
  138. function setWithoutEmpty(&$array, $key, $value)
  139. {
  140. if (!empty($value)) {
  141. $array[$key] = $value;
  142. }
  143. return $array;
  144. }
  145. /**
  146. * 缩略图链接拼接
  147. *
  148. * @param string $url 图片链接
  149. * @param int $mode 缩略模式
  150. * @param int $width 宽度
  151. * @param int $height 长度
  152. * @param string $format 输出类型
  153. * @param int $quality 图片质量
  154. * @param int $interlace 是否支持渐进显示
  155. * @param int $ignoreError 忽略结果
  156. * @return string
  157. * @link http://developer.qiniu.com/code/v6/api/kodo-api/image/imageview2.html
  158. * @author Sherlock Ren <sherlock_ren@icloud.com>
  159. */
  160. function thumbnail(
  161. $url,
  162. $mode,
  163. $width,
  164. $height,
  165. $format = null,
  166. $quality = null,
  167. $interlace = null,
  168. $ignoreError = 1
  169. ) {
  170. static $imageUrlBuilder = null;
  171. if (is_null($imageUrlBuilder)) {
  172. $imageUrlBuilder = new \Qiniu\Processing\ImageUrlBuilder;
  173. }
  174. return call_user_func_array(array($imageUrlBuilder, 'thumbnail'), func_get_args());
  175. }
  176. /**
  177. * 图片水印
  178. *
  179. * @param string $url 图片链接
  180. * @param string $image 水印图片链接
  181. * @param numeric $dissolve 透明度
  182. * @param string $gravity 水印位置
  183. * @param numeric $dx 横轴边距
  184. * @param numeric $dy 纵轴边距
  185. * @param numeric $watermarkScale 自适应原图的短边比例
  186. * @link http://developer.qiniu.com/code/v6/api/kodo-api/image/watermark.html
  187. * @return string
  188. * @author Sherlock Ren <sherlock_ren@icloud.com>
  189. */
  190. function waterImg(
  191. $url,
  192. $image,
  193. $dissolve = 100,
  194. $gravity = 'SouthEast',
  195. $dx = null,
  196. $dy = null,
  197. $watermarkScale = null
  198. ) {
  199. static $imageUrlBuilder = null;
  200. if (is_null($imageUrlBuilder)) {
  201. $imageUrlBuilder = new \Qiniu\Processing\ImageUrlBuilder;
  202. }
  203. return call_user_func_array(array($imageUrlBuilder, 'waterImg'), func_get_args());
  204. }
  205. /**
  206. * 文字水印
  207. *
  208. * @param string $url 图片链接
  209. * @param string $text 文字
  210. * @param string $font 文字字体
  211. * @param string $fontSize 文字字号
  212. * @param string $fontColor 文字颜色
  213. * @param numeric $dissolve 透明度
  214. * @param string $gravity 水印位置
  215. * @param numeric $dx 横轴边距
  216. * @param numeric $dy 纵轴边距
  217. * @link http://developer.qiniu.com/code/v6/api/kodo-api/image/watermark.html#text-watermark
  218. * @return string
  219. * @author Sherlock Ren <sherlock_ren@icloud.com>
  220. */
  221. function waterText(
  222. $url,
  223. $text,
  224. $font = '黑体',
  225. $fontSize = 0,
  226. $fontColor = null,
  227. $dissolve = 100,
  228. $gravity = 'SouthEast',
  229. $dx = null,
  230. $dy = null
  231. ) {
  232. static $imageUrlBuilder = null;
  233. if (is_null($imageUrlBuilder)) {
  234. $imageUrlBuilder = new \Qiniu\Processing\ImageUrlBuilder;
  235. }
  236. return call_user_func_array(array($imageUrlBuilder, 'waterText'), func_get_args());
  237. }
  238. /**
  239. * 从uptoken解析accessKey和bucket
  240. *
  241. * @param $upToken
  242. * @return array(ak,bucket,err=null)
  243. */
  244. function explodeUpToken($upToken)
  245. {
  246. $items = explode(':', $upToken);
  247. if (count($items) != 3) {
  248. return array(null, null, "invalid uptoken");
  249. }
  250. $accessKey = $items[0];
  251. $putPolicy = json_decode(base64_urlSafeDecode($items[2]));
  252. $scope = $putPolicy->scope;
  253. $scopeItems = explode(':', $scope);
  254. $bucket = $scopeItems[0];
  255. return array($accessKey, $bucket, null);
  256. }
  257. }