wp-admin/includes/class-ftp.php:268$pasvoptionalNULL function Passive($pasv=NULL) { if(is_null($pasv)) $this->_passive=!$this->_passive; else $this->_passive=$pasv; if(!$this->_port_available and !$this->_passive) { $this->SendMSG("Only passive connections available!"); $this->_passive=TRUE; return FALSE; } $this->SendMSG("Passive mode ".($this->_passive?"on":"off")); return TRUE; }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.