WordPress at a glance
function is not described

Text_Diff::_getTempDir() public WP 1.0

Determines the location of the system temporary directory.

{} It's a method of the class: Text_Diff{}

No Hooks.

Return

String. A directory name which can be used for temp files. Returns false if one could not be found.

Usage

$Text_Diff = new Text_Diff();
$Text_Diff->_getTempDir();

Code of Text_Diff::_getTempDir() WP 5.5.1

<?php
function _getTempDir()
{
    $tmp_locations = array('/tmp', '/var/tmp', 'c:\WUTemp', 'c:\temp',
                           'c:\windows\temp', 'c:\winnt\temp');

    /* Try PHP's upload_tmp_dir directive. */
    $tmp = ini_get('upload_tmp_dir');

    /* Otherwise, try to determine the TMPDIR environment variable. */
    if (!strlen($tmp)) {
        $tmp = getenv('TMPDIR');
    }

    /* If we still cannot determine a value, then cycle through a list of
     * preset possibilities. */
    while (!strlen($tmp) && count($tmp_locations)) {
        $tmp_check = array_shift($tmp_locations);
        if (@is_dir($tmp_check)) {
            $tmp = $tmp_check;
        }
    }

    /* If it is still empty, we have failed, so return false; otherwise
     * return the directory determined. */
    return strlen($tmp) ? $tmp : false;
}