get_temp_dir()

Determine a writable directory for temporary files.


Description

Function’s preference is the return value of sys_get_temp_dir(), followed by your PHP temporary upload directory, followed by WP_CONTENT_DIR, before finally defaulting to /tmp/

In the event that this function does not find a writable location, It may be overridden by the WP_TEMP_DIR constant in your wp-config.php file.


Return

(string) Writable temporary directory.


Source

File: wp-includes/functions.php

function get_temp_dir() {
	static $temp = '';
	if ( defined('WP_TEMP_DIR') )
		return trailingslashit(WP_TEMP_DIR);

	if ( $temp )
		return trailingslashit( $temp );

	if ( function_exists('sys_get_temp_dir') ) {
		$temp = sys_get_temp_dir();
		if ( @is_dir( $temp ) && wp_is_writable( $temp ) )
			return trailingslashit( $temp );
	}

	$temp = ini_get('upload_tmp_dir');
	if ( @is_dir( $temp ) && wp_is_writable( $temp ) )
		return trailingslashit( $temp );

	$temp = WP_CONTENT_DIR . '/';
	if ( is_dir( $temp ) && wp_is_writable( $temp ) )
		return $temp;

	return '/tmp/';
}


Changelog

Changelog
Version Description
WP-2.5.0 Introduced.