tmpfile()

tmpfile() — Creates a temporary file.

Built-in function of PHP 8.5. The manual lists it as available in PHP 4, PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.

What it does

Creates a temporary file with a unique name in read-write-binary (w+b) mode and returns a file handle.

Signature

tmpfile(): resource|false

Parameters

This function takes no parameters.

Return value

Returns a file handle, similar to the one returned by fopen(), for the new file or false on failure.

Example

A runnable snippet:

$temp = tmpfile(); fwrite($temp, "writing to tempfile"); fseek($temp, 0); echo fread($temp, 1024); fclose($temp); // this removes the file

Output:

writing to tempfile

See also

tempnam(), sys_get_temp_dir()

All PHP 8.5 built-in functions

Reference card built from the PHP manual page tmpfile() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.