wp-admin/includes/class-ftp.php:524$pathname function file_exists($pathname) { $exists=true; if(!$this->_exec("RNFR ".$pathname, "rename")) $exists=FALSE; else { if(!$this->_checkCode()) $exists=FALSE; $this->abort(); } if($exists) $this->SendMSG("Remote file ".$pathname." exists"); else $this->SendMSG("Remote file ".$pathname." does not exist"); return $exists; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-ftp.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.