PHP fwrite()用于将大字符串写入文件 [英] PHP fwrite() for writing a large string to file

问题描述

我必须写一个大字符串 10MB 到文件中，我正在使用此行来实现:

I have to write a large string 10MB to file, and I am using this line to achieve that:

fwrite($file, $content);

问题是:不是整个字符串都写入文件，而是限制为特定的限制.

the problem is: not the whole string is written to the file, and limited to a specific limit.

和 fwrite 始终返回7933594.

推荐答案

是的，fwrite函数的长度受到限制，对于大文件，您可以将文件分割成较小的部分，如下所示:

Yes, fwrite function is limited to length, and for a large files you may split the file to a smaller pieces like the following:

    $file   = fopen("file.json", "w");

    $pieces = str_split($content, 1024 * 4);
    foreach ($pieces as $piece) {
        fwrite($file, $piece, strlen($piece));
    }

    fclose($file);

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