从字符串文件大小

问题描述

如何从php中的字符串获取文件大小"?

how can i get the "filesize" from a string in php?

我将字符串作为blob放在mysql数据库中，我需要存储blob的大小.我的解决方案是创建一个临时文件，并将字符串放入临时文件.现在我可以从字符串"中获取文件大小.但这解决方案不好...

I put the string in a mysql database as a blob and i need to store the size of the blob. My solution was to create a temp file and put the string into the temp file. now i can get the filesize from the "string". but that solution is not good...

问候

推荐答案

这要视情况而定.如果您启用了 mbstring函数重载，则唯一有效的调用将是mb_strlen($string, '8bit');.如果未启用，strlen($string)也可以正常工作.

It depends. If you have mbstring function overloading enabled, the only call that will work will be mb_strlen($string, '8bit');. If it's not enabled, strlen($string) will work fine as well.

因此，您可以处理以下两种情况:

So, you can handle both cases like this:

if (function_exists('mb_strlen')) {
    $size = mb_strlen($string, '8bit');
} else {
    $size = strlen($string);
}

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