ReadFile

ReadFile () fetches the data ( complete XML file ) that we want to encrypt .

ReadFile（）取得我们希望加密的数据（整个XML文件）。

The readfile function dumps the entire contents of a file or Web page to the default output buffer .

readfile函数将把文件或Web页面的全部内容转储到默认的输出缓冲区。

As with fopen , file_get_contents , file , and readfile , all return False on failure to open or process the file .

如fopen函数一样，filegetcontents、file和readfile函数都在打开失败或处理文件失败时返回False。

In contrast , if you 're simply echoing a large amount of text with little modification , file , file_get_contents , or readfile might make more sense .

相反，如果要回显只做了少许修改的大量文本，则使用file、filegetcontents或readfile可能更合适。

Classic functions such as fread might serve you best much of the time or you might find yourself drawn more to the simplicity of readfile when it 's just right for the task .

诸如fread之类的典型函数可能在大多数时候都是最佳的选择，或者当readfile刚好能满足任务需要时，您可能会发现自己更为readfile的简单所吸引。