vt7 - PHP7 Fatal Error

Fatal error: Uncaught Error: Call to undefined function mysql_pconnect() in /Applications/MAMP/htdocs/vt7/libraries/adodb/drivers/adodb-mysql.inc.php:480 Stack trace: #0 /Applications/MAMP/htdocs/vt7/libraries/adodb/adodb.inc.php(748): ADODB_mysql->_pconnect('localhost:3306', 'root', 'root', 'vt7') #1 (closed) /Applications/MAMP/htdocs/vt7/include/database/PearDatabase.php(815): ADOConnection->PConnect('localhost:3306', 'root', 'root', 'vt7') #2 (closed) /Applications/MAMP/htdocs/vt7/include/database/PearDatabase.php(1086): PearDatabase->connect() #3 (closed) /Applications/MAMP/htdocs/vt7/include/utils/UserInfoUtil.php(12): require_once('/Applications/M...') #4 /Applications/MAMP/htdocs/vt7/vtlib/Vtiger/Access.php(10): include_once('/Applications/M...') #5 (closed) /Applications/MAMP/htdocs/vt7/vtlib/Vtiger/ModuleBasic.php(10): include_once('/Applications/M...') #6 (closed) /Applications/MAMP/htdocs/vt7/vtlib/Vtiger/Module.php(12): include_once('/Applications/M...') #7 (closed) /Applications/MAMP/htdocs/vt7/index.php(16): include_once('/Applications/M...') #8 (closed) {main} thrown in /Applications/MAMP/htdocs/vt7/libraries/adodb/drivers/adodb-mysql.inc.php on line 480