(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
       When set to true, the filename is also
searched for within the include_path
      
context
       Refer to the context
section of the manual for a description of contexts.
      
The opened file as an SplFileObject object.
A RuntimeException if the file cannot be opened (e.g. insufficient access rights).
| Version | Description | 
|---|---|
| 8.0.0 | contextis now nullable. | 
Example #1 SplFileInfo::openFile() example
<?php
$fileinfo = new SplFileInfo('/tmp/foo.txt');
if ($fileinfo->isWritable()) {
    $fileobj = $fileinfo->openFile('a');
    $fileobj->fwrite("appended this sample text");
}
?>