<?php
// Everything you enter here will be executed by our servers. Try it!
$sql="SELECT * FROM table_name WHERE username= '{$_SESSION['user']}'" ;
echo $sql;
Warning: Undefined global variable $_SESSION in /in/5Zfk8 on line 4
Warning: Trying to access array offset on null in /in/5Zfk8 on line 4
SELECT * FROM table_name WHERE username= ''
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Warning: Undefined global variable $_SESSION in /in/5Zfk8 on line 4
Warning: Trying to access array offset on value of type null in /in/5Zfk8 on line 4
SELECT * FROM table_name WHERE username= ''
Output for 8.0.0 - 8.0.30
Warning: Undefined variable $_SESSION in /in/5Zfk8 on line 4
Warning: Trying to access array offset on value of type null in /in/5Zfk8 on line 4
SELECT * FROM table_name WHERE username= ''
Output for 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: _SESSION in /in/5Zfk8 on line 4
Notice: Trying to access array offset on value of type null in /in/5Zfk8 on line 4
SELECT * FROM table_name WHERE username= ''