SplFileInfo::openFile
(PHP 5 >= 5.1.2, PHP 7, PHP 8)
SplFileInfo::openFile — Gets an SplFileObject object for the file
说明
public SplFileInfo::openFile(string$mode = "r", bool $useIncludePath = false, ?resource $context = null): SplFileObject
Creates 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.
参数
mode
The mode for opening the file. See the fopen() documentation for descriptions of possible modes. The default is read only.
useIncludePath
值 设为 true 时, 也会在
include_path搜索文件名。
context
上下文（context）的说明请参考手册中的 上下文（context）章节.
返回值
The opened file as an SplFileObject object.
错误／异常
A RuntimeException if the file cannot be opened (e.g. insufficient access rights).
更新日志
context is now nullable.
范例
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");
}
?>
参见
SplFileObject stream_context_create() - 创建资源流上下文 fopen() - 打开文件或者 URL
User Contributed Notes
There are no user contributed notes for this page.官方地址：https://www.php.net/manual/en/splfileinfo.openfile.php