Severity: Warning
Message: mb_substr() expects parameter 1 to be string, array given
Filename: controllers/student.php
Line Number: 47
Severity: Notice
Message: Array to string conversion
Filename: student/index.php
Line Number: 35
Line Number: 80
Line Number: 8
Line Number: 9
Message: trim() expects parameter 1 to be string, array given
Filename: include/header.php
Line Number: 10