(PHP 5 >= 5.1.2, PHP 7, PHP 8)
SplFileInfo::openFile — Gets an SplFileObject object for the file
$mode = "r", bool $useIncludePath = false, ?resource $context = null): SplFileObjectCreates an SplFileObject object of the file. This is useful because SplFileObject contains additional methods for manipulating the file whereas SplFileInfo is only useful for gaining information, like whether the file is writable.
modeThe mode for opening the file. See the fopen() documentation for descriptions of possible modes. The default is read only.
useIncludePath
值 設(shè)為 true 時, 也會在
include_path搜索文件名。
context
上下文（context）的說明請參考手冊中的 上下文（context）章節(jié).
The opened file as an SplFileObject object.
A RuntimeException if the file cannot be opened (e.g. insufficient access rights).
| 版本 | 說明 |
|---|---|
| 8.0.0 |
context is now nullable.
|
示例 #1 SplFileInfo::openFile() example
<?php
$fileinfo = new SplFileInfo('/tmp/foo.txt');
if ($fileinfo->isWritable()) {
$fileobj = $fileinfo->openFile('a');
$fileobj->fwrite("appended this sample text");
}
?>