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php md5_file()
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- 2016-06-23 13:32:061507browse
md5_file() 函数计算文件的 MD5 散列
在本例中，我们将检测 "test.txt" 是否已被更改（即是否 MD5 散列已被更改）：
<?php$md5file = file_get_contents("md5file.txt");if (md5_file("test.txt")== $md5file) { echo "The file is ok."; }else { echo "The file has been changed."; }?>
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