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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 中搜索文件名。

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

版本 说明
8.0.0 context is now nullable.

示例

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