SplFileInfo::openFile()
(PHP 5 >= 5.1.2, PHP 7)
Gets an SplFileObject object for the file
说明
public SplFileInfo::openFile([string $open_mode= "r"[,bool $use_include_path=FALSE
[,resource $context=NULL
]]]): SplFileObject
Creates an SplFileObjectobject 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
- $open_mode
The mode for opening the file. See the fopen() documentation for descriptions of possible modes. The default is read only.
- $use_include_path
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 SplFileObjectobject.
错误/异常
A RuntimeException if the file cannot be opened(e.g. insufficient access rights).
范例
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