php - i edit my file in localhost it perfectly worked.but after up my site it shows error and not working properly -


i'm working in php codeigniter. when edit file on localhost works perfectly.

but after having uploaded site, showing error (as shown below) , not working properly.

severity: warning

message: cannot modify header information - headers sent (output started @ /home/innofeast014/public_html/caremykiddie.com/demo/hospital/controllers/patient_register.php:664)

filename: libraries/session.php

line number: 688

a php error encountered

severity: warning

message: cannot modify header information - headers sent (output started @ /home/innofeast014/public_html/caremykiddie.com/demo/hospital/controllers/patient_register.php:664)

filename: helpers/url_helper.php

line number: 542

any idea concerning error please?

this error might come if have spaces before first php tag. can post index.php file or whatever works entry file


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