n.打開文件

The fopen() function opens a file or URL. 函數(shù)的作用是：打開文件或URL。

Unfortunately that would not work because the fopen() call will fail if the remote file already exists. 如果遠(yuǎn)程文件已經(jīng)存在則fopen()函數(shù)的操作將會失敗。

Note: As of PHP 4.3.0, both source and dest may be URLs if the "fopen wrappers" have been enabled. 注:從PHP 4.

Opens for reading. If the file does not exist or cannot be found, the fopen call fails. 如果你不輸入全路徑，也可以，就默認(rèn)在當(dāng)前文件下！

Warning: fopen(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in ...... 當(dāng)然在服務(wù)器上手工訪問那個地址是沒有問題的，不是域名解析的問題。

As an example, the default implementation of streams is located in the file src/base/ftsystem.c and uses the ANSI fopen(), fseek(), and fread() calls. 舉例來說，流的缺省實現(xiàn)位于文件src/base/ftsystem.