tempnam
(PHP 4, PHP 5, PHP 7, PHP 8)
tempnam — Create file with unique file name
Description
$directory, string $prefix): string|falseCreates a file with a unique filename, with access permission set to 0600, in the specified directory. If the directory does not exist or is not writable, tempnam() may generate a file in the system's temporary directory, and return the full path to that file, including its name.
Parameters
-
directory -
The directory where the temporary filename will be created.
-
prefix -
The prefix of the generated temporary filename.
Note: Only the first 63 characters of the prefix are used, the rest are ignored. Windows uses only the first three characters of the prefix.
Return Values
Returns the new temporary filename (with path), or false on
failure.
Changelog
| Version | Description |
|---|---|
| 7.1.0 | tempnam() now emits a notice when falling back to the temp directory of the system. |
Examples
Example #1 tempnam() example
<?php
$tmpfname = tempnam("/tmp", "FOO");
$handle = fopen($tmpfname, "w");
fwrite($handle, "writing to tempfile");
fclose($handle);
// do here something
unlink($tmpfname);
?>
Notes
Note: If PHP cannot create a file in the specified
directoryparameter, it falls back on the system default. On NTFS this also happens if the specifieddirectorycontains more than 65534 files.
See Also
- tmpfile() - Creates a temporary file
- sys_get_temp_dir() - Returns directory path used for temporary files
- unlink() - Deletes a file
