<?php
mysql_("SELECT * FROM `shop` WHERE `email` regexp '^[a-z]+@[a-z]+\\\.ru$';");
mysql_("SELECT * FROM `shop` WHERE `email` regexp '^[a-z]+@[a-z]+\\\\.ru$';");
mysql_("SELECT * FROM `shop` WHERE `email` regexp '^[a-z]+@[a-z]+\\\\\.ru$';");
Fatal error: Uncaught Error: Call to undefined function mysql_() in /in/cq7sB:3
Stack trace:
#0 {main}
thrown in /in/cq7sB on line 3
Process exited with code 255.