很多人建议 mb_detect_encoding 检测,可是不知为何我这不成功,什么都没输出、
看到有人写了个增强版,用 BOM 判断的,我果断就无视了,这东西完全不靠谱、
最终根据PHP手册里 mb_detect_encoding 函数下方的例子,自己写了一个检测函数,
还包括自动检测编码并按指点编码读取文件的函数、
源码献上,不喜勿喷。
网上的方法我试过没用才写的,说不定环境不一样导致的。
所以万一没用,也别喷我,我只是共享想思路而已、、
<span 1</span> <?<span php
</span><span 2</span> <span /*</span><span *
</span><span 3</span> <span * 检测文件编码
</span><span 4</span> <span * @param string $file 文件路径
</span><span 5</span> <span * @return string|null 返回 编码名 或 null
</span><span 6</span> <span */</span>
<span 7</span> <span function</span> detect_encoding(<span $file</span><span ) {
</span><span 8</span> <span $list</span> = <span array</span>('GBK', 'UTF-8', 'UTF-16LE', 'UTF-16BE', 'ISO-8859-1'<span );
</span><span 9</span> <span $str</span> = <span file_get_contents</span>(<span $file</span><span );
</span><span 10</span> <span foreach</span> (<span $list</span> <span as</span> <span $item</span><span ) {
</span><span 11</span> <span $tmp</span> = mb_convert_encoding(<span $str</span>, <span $item</span>, <span $item</span><span );
</span><span 12</span> <span if</span> (<span md5</span>(<span $tmp</span>) == <span md5</span>(<span $str</span><span )) {
</span><span 13</span> <span return</span> <span $item</span><span ;
</span><span 14</span> <span }
</span><span 15</span> <span }
</span><span 16</span> <span return</span> <span null</span><span ;
</span><span 17</span> <span }
</span><span 18</span>
<span 19</span> <span /*</span><span *
</span><span 20</span> <span * 自动解析编码读入文件
</span><span 21</span> <span * @param string $file 文件路径
</span><span 22</span> <span * @param string $charset 读取编码
</span><span 23</span> <span * @return string 返回读取内容
</span><span 24</span> <span */</span>
<span 25</span> <span function</span> auto_read(<span $file</span>, <span $charset</span>='UTF-8'<span ) {
</span><span 26</span> <span $list</span> = <span array</span>('GBK', 'UTF-8', 'UTF-16LE', 'UTF-16BE', 'ISO-8859-1'<span );
</span><span 27</span> <span $str</span> = <span file_get_contents</span>(<span $file</span><span );
</span><span 28</span> <span foreach</span> (<span $list</span> <span as</span> <span $item</span><span ) {
</span><span 29</span> <span $tmp</span> = mb_convert_encoding(<span $str</span>, <span $item</span>, <span $item</span><span );
</span><span 30</span> <span if</span> (<span md5</span>(<span $tmp</span>) == <span md5</span>(<span $str</span><span )) {
</span><span 31</span> <span return</span> mb_convert_encoding(<span $str</span>, <span $charset</span>, <span $item</span><span );
</span><span 32</span> <span }
</span><span 33</span> <span }
</span><span 34</span> <span return</span> ""<span ;
</span><span 35</span> }
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