我使用sha256进行散列并以二进制形式输出，并将其存储在Mysql的BINARY（32）中。
echo $testsha256 = hash( 'sha256', "aKyAmNsb", true );
但是，当我从数据库中检索此值时，它是不同的
print_r(str_split($returnedpassword));
echo "<br>";
print_r(str_split($testsha256));
echo "<br>";
数组（[0] =＆gt;ú[1] =＆gt;È[2] =＆gt; c [3] =＆gt; [4] =＆gt; u [5] =＆gt; k [6] = ＆gt;ë[7] =＆gt; a [8] =＆gt;Ð[9] =＆gt;‰[10] =＆gt; V [11] =＆gt;û[12] =＆gt; E [13] =＆gt; ; [[14] =＆gt; [15] =＆gt;Ø[16] =＆gt;Ý[17] =＆gt; Q [18] =＆gt;â[19] =＆gt;ž[20] =＆gt;？ [21] =＆gt; [22] =＆gt;¾[23] =＆gt;¨[24] =＆gt;÷[25] =＆gt; 9 [26] =＆gt;í[27] =＆gt;Ž[28 ] =＆gt; [29] =＆gt; 5 [30] =＆gt; [31] =＆gt;）
数组（[0] =＆gt;ú[1] =＆gt;È[2] =＆gt; c [3] =＆gt; [4] =＆gt; u [5] =＆gt; k [6] = ＆gt;ë[7] =＆gt; \ [8] =＆gt; a [9] =＆gt;Ð[10] =＆gt;‰[11] =＆gt; V [12] =＆gt;û[13] =＆gt; ; E [14] =＆gt; [[15] =＆gt; [16] =＆gt;Ø[17] =＆gt;Ý[18] =＆gt; Q [19] =＆gt;â[20] =＆gt;ž [21] =＆gt;？[22] =＆gt; [23] =＆gt;¾[24] =＆gt;¨[25] =＆gt;÷[26] =＆gt; 9 [27] =＆gt;í[28 ] =＆gt;Ž[29] =＆gt; [30] =＆gt; 5 [31] =＆gt;）
正如你所看到的，从Mysql返回的二进制文件在索引8上的'a'之前缺少'\'。索引8应该保持'\'，就像它在$ testsha256中一样，但'\'不是那里有$ returnresult