[英]why isn't this base64 string decoding?
My code:我的代码:
<?php
$a = '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';
echo strlen(base64_decode($a)) . "\n\n";
echo strlen(sodium_base642bin($a, SODIUM_BASE64_VARIANT_ORIGINAL_NO_PADDING));
base64_decode
decodes that string just fine but sodium_base642bin
fails, regardless of what the $id
parameter is (SODIUM_BASE64_VARIANT_ORIGINAL, SODIUM_BASE64_VARIANT_ORIGINAL_NO_PADDING, SODIUM_BASE64_VARIANT_URLSAFE and SODIUM_BASE64_VARIANT_URLSAFE_NO_PADDING). base64_decode
可以很好地解码该字符串,但sodium_base642bin
失败,无论$id
参数是什么(SODIUM_BASE64_VARIANT_ORIGINAL、SODIUM_BASE64_VARIANT_ORIGINAL_NO_PADDING、SODIUM_BASE64_VARIANT_URLSAFE 和 SODIUM_BASE64_VARIANT_URLSAFE_NO_PADDING)。 More specifically, sodium_base642bin
throws the following (useless) exception:更具体地说, sodium_base642bin
抛出以下(无用的)异常:
Fatal error: Uncaught SodiumException: sodium_base642bin(): Argument #1 ($string) must be a valid base64 string
Any ideas?有任何想法吗?
As stated in a comment by @Rylee, your base64 string is malformed.正如@Rylee 在评论中所述,您的 base64 字符串格式不正确。 Since base64_decode
tends to ignore some errors by working in non-strict mode by default, it does'nt not fail.由于base64_decode
在默认情况下倾向于通过在非严格模式下工作来忽略一些错误,因此它不会失败。 But by setting the strict
parameter to true
, the function will return false
.但是通过将strict
参数设置为true
, function 将返回false
。
To check whats going wrong, you can use a tool like this base64 validator , it will say that it's invalid, and even propose you to repair it.要检查是什么问题,您可以使用base64 验证器之类的工具,它会说它无效,甚至建议您修复它。
Once repaired, if you diff char by char the result with your encoded string, you find out that the last character S
must be removed in order to get a fully valid base64 encoded string.修复后,如果您将结果与编码字符串逐个字符地进行比较,您会发现必须删除最后一个字符S
才能获得完全有效的 base64 编码字符串。
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