PHP Header redirect not working

Question

include  header php      name     POST  name     score     POST  score     dept     POST  dept      MyDB- gt prep  INSERT INTO demo   id   name   score   dept    date   VALUES       name    score    dept    date         Bind a value to our  id hook    Produces  SELECT   FROM demo table WHERE id    23   MyDB- gt bind   date    date      Run the query  MyDB- gt run     header  Location index php        exit    The above code keeps giving me an issue with the redirect  The error is the following       Warning  Cannot modify header information - headers already sent by  output       started at  Applications MAMP htdocs testygubbins OO test header php 15  in        Applications MAMP htdocs testygubbins OO test form php on line 16    I am totally flummoxed by this  Does anyone know what I should be doing to make it work   EDIT  header php code    lt  php include  class user php    include  class Connection php      date   date  Y-m-j       gt   lt html gt   lt head gt       lt link rel StyleSheet href  css style css  type  text css  media screen gt       lt title gt Test lt  title gt   lt  head gt   lt body gt   lt div id  page  gt

User · Answer

Alternatively  not to think about a newline or space somewhere in the file  you can buffer the output  Basically  you call ob start   at the very beginning of the file and ob end flush   at the end  You can find more details at php net ob-start function description   Edit  If you use buffering  you can output HTML before and after header   function - buffering will then ignore the output and return only the redirection header

User · Answer

Also see your php file text encoding  Mine was UTF-8 with BOM and it prevented the script to work  But now works flawlessly after removing the BOM

User · Answer

If I understand correctly  something has already sent out from header php  maybe some HTML  so the headers have been set  You may need to recheck your header php file for any part that may output HTML or spaces before your first   EDIT  I am now sure that it is caused from header php since you have those HTML output  You can fix this by remove the  include  header php     line and copy the following code to your file instead   include  class user php    include  class Connection php              date   date  Y-m-j

User · Answer

also try include once   instead of include   that can also work

User · Answer

Don t include header php  You should not output HTML when you are going to redirect   Make a new file  eg   pre php   Put this in it    lt  php include  class user php    include  class Connection php      gt    Then in header php  include that  in stead of including the two other files  In form php  include pre php in stead of header php

User · Answer

Try redirection with JavaScript    lt script type  text javascript  gt    window location href  index php    lt  script gt

User · Answer

Your include produces output  thereby making it impossible to send a http header later  Two option    Move the output somewhere after the include  Use output buffering  i e  at the very start of your script  put ob start    and at the end  put ob flush    This enables PHP to first wait for all the output to be gathered  determine in what order to render it  and outputs it    I would recommend you learn the second option  as it makes you far more flexible

User · Answer

You may have some  plain text  somewhere in php files that is interpreted as script output  It may be even a newline before or after the php script tag specifier  less-than   question mark    php     Besides  if I remember correctly  according to http specification  the  Location  header accepts only full URLs  not relative locations  Have that in mind too

User · Answer

COMMON PROBLEMS   1  There should be NO output  i e  echo    or HTML parts  before the header       command   2  After header       you must use exit       3  Remove any white-space or newline  before  lt  php and after   gt  tags   4   Check that php file  and also other  php files  that are included  -  they should have UTF8 without BOM encoding  and not just UTF-8    Because default UTF8 adds invisible character in the start of file  called  BOM    so you should avoid that               5  Use 301 or 302 reference   header  location  http   example com    true   301     exit    6  Turn on error reporting  And tell the error   7  If none of above helps  use JAVASCRIPT redirection  however  discouraged method   may be the last chance in custom cases       echo   lt script type  text javascript  gt window top location  http   website com    lt  script gt    exit

User · Answer

Alternatively  not to think about a newline or space somewhere in the file  you can buffer the output  Basically  you call ob start   at the very beginning of the file and ob end flush   at the end  You can find more details at php net ob-start function description   Edit  If you use buffering  you can output HTML before and after header   function - buffering will then ignore the output and return only the redirection header

User · Answer

Look at  Applications MAMP htdocs testygubbins OO test header php line 15   At that position  it makes some output  Fix it

User · Answer

Also see your php file text encoding  Mine was UTF-8 with BOM and it prevented the script to work  But now works flawlessly after removing the BOM

User · Answer

Look carefully at your includes - perhaps you have a blank line after a closing       This will cause some literal whitespace to be sent as output  preventing you from making subsequent header calls    Note that it is legal to leave the close    off the include file  which is a useful idiom for avoiding this problem    EDIT  looking at your header  you need to avoid doing any HTML output if you want to output headers  or use output buffering to capture it    Finally  as the PHP manual page for header points out  you should really use full URLs to redirect      Note  HTTP 1 1 requires an absolute   URI as argument to Location     including the scheme  hostname and   absolute path  but some clients accept   relative URIs  You can usually use     SERVER  HTTP HOST        SERVER  PHP SELF    and dirname   to   make an absolute URI from a relative   one yourself

User · Answer

also try include once   instead of include   that can also work

User · Answer

Alternatively  not to think about a newline or space somewhere in the file  you can buffer the output  Basically  you call ob start   at the very beginning of the file and ob end flush   at the end  You can find more details at php net ob-start function description   Edit  If you use buffering  you can output HTML before and after header   function - buffering will then ignore the output and return only the redirection header

User · Answer

If I understand correctly  something has already sent out from header php  maybe some HTML  so the headers have been set  You may need to recheck your header php file for any part that may output HTML or spaces before your first   EDIT  I am now sure that it is caused from header php since you have those HTML output  You can fix this by remove the  include  header php     line and copy the following code to your file instead   include  class user php    include  class Connection php              date   date  Y-m-j

User · Answer

You may have some  plain text  somewhere in php files that is interpreted as script output  It may be even a newline before or after the php script tag specifier  less-than   question mark    php     Besides  if I remember correctly  according to http specification  the  Location  header accepts only full URLs  not relative locations  Have that in mind too

User · Answer

Don t include header php  You should not output HTML when you are going to redirect   Make a new file  eg   pre php   Put this in it    lt  php include  class user php    include  class Connection php      gt    Then in header php  include that  in stead of including the two other files  In form php  include pre php in stead of header php

User · Answer

If I understand correctly  something has already sent out from header php  maybe some HTML  so the headers have been set  You may need to recheck your header php file for any part that may output HTML or spaces before your first   EDIT  I am now sure that it is caused from header php since you have those HTML output  You can fix this by remove the  include  header php     line and copy the following code to your file instead   include  class user php    include  class Connection php              date   date  Y-m-j

User · Answer

You may have some  plain text  somewhere in php files that is interpreted as script output  It may be even a newline before or after the php script tag specifier  less-than   question mark    php     Besides  if I remember correctly  according to http specification  the  Location  header accepts only full URLs  not relative locations  Have that in mind too

User · Answer

Try This       ob start       include  header php      name     POST  name     score     POST  score     dept     POST  dept      MyDB- gt prep  INSERT INTO demo   id   name   score   dept    date   VALUES       name    score    dept    date         Bind a value to our  id hook    Produces  SELECT   FROM demo table WHERE id    23   MyDB- gt bind   date    date      Run the query  MyDB- gt run     header  Location index php       ob end flush           exit

User · Answer

Look carefully at your includes - perhaps you have a blank line after a closing       This will cause some literal whitespace to be sent as output  preventing you from making subsequent header calls    Note that it is legal to leave the close    off the include file  which is a useful idiom for avoiding this problem    EDIT  looking at your header  you need to avoid doing any HTML output if you want to output headers  or use output buffering to capture it    Finally  as the PHP manual page for header points out  you should really use full URLs to redirect      Note  HTTP 1 1 requires an absolute   URI as argument to Location     including the scheme  hostname and   absolute path  but some clients accept   relative URIs  You can usually use     SERVER  HTTP HOST        SERVER  PHP SELF    and dirname   to   make an absolute URI from a relative   one yourself

User · Answer

Try This       ob start       include  header php      name     POST  name     score     POST  score     dept     POST  dept      MyDB- gt prep  INSERT INTO demo   id   name   score   dept    date   VALUES       name    score    dept    date         Bind a value to our  id hook    Produces  SELECT   FROM demo table WHERE id    23   MyDB- gt bind   date    date      Run the query  MyDB- gt run     header  Location index php       ob end flush           exit

User · Answer

Alternatively  not to think about a newline or space somewhere in the file  you can buffer the output  Basically  you call ob start   at the very beginning of the file and ob end flush   at the end  You can find more details at php net ob-start function description   Edit  If you use buffering  you can output HTML before and after header   function - buffering will then ignore the output and return only the redirection header

User · Answer

You may have some  plain text  somewhere in php files that is interpreted as script output  It may be even a newline before or after the php script tag specifier  less-than   question mark    php     Besides  if I remember correctly  according to http specification  the  Location  header accepts only full URLs  not relative locations  Have that in mind too

User · Answer

Look at  Applications MAMP htdocs testygubbins OO test header php line 15   At that position  it makes some output  Fix it

User · Answer

Look at  Applications MAMP htdocs testygubbins OO test header php line 15   At that position  it makes some output  Fix it

User · Answer

If I understand correctly  something has already sent out from header php  maybe some HTML  so the headers have been set  You may need to recheck your header php file for any part that may output HTML or spaces before your first   EDIT  I am now sure that it is caused from header php since you have those HTML output  You can fix this by remove the  include  header php     line and copy the following code to your file instead   include  class user php    include  class Connection php              date   date  Y-m-j

User · Answer

Your include produces output  thereby making it impossible to send a http header later  Two option    Move the output somewhere after the include  Use output buffering  i e  at the very start of your script  put ob start    and at the end  put ob flush    This enables PHP to first wait for all the output to be gathered  determine in what order to render it  and outputs it    I would recommend you learn the second option  as it makes you far more flexible

User · Answer

Look carefully at your includes - perhaps you have a blank line after a closing       This will cause some literal whitespace to be sent as output  preventing you from making subsequent header calls    Note that it is legal to leave the close    off the include file  which is a useful idiom for avoiding this problem    EDIT  looking at your header  you need to avoid doing any HTML output if you want to output headers  or use output buffering to capture it    Finally  as the PHP manual page for header points out  you should really use full URLs to redirect      Note  HTTP 1 1 requires an absolute   URI as argument to Location     including the scheme  hostname and   absolute path  but some clients accept   relative URIs  You can usually use     SERVER  HTTP HOST        SERVER  PHP SELF    and dirname   to   make an absolute URI from a relative   one yourself

User · Answer

Look carefully at your includes - perhaps you have a blank line after a closing       This will cause some literal whitespace to be sent as output  preventing you from making subsequent header calls    Note that it is legal to leave the close    off the include file  which is a useful idiom for avoiding this problem    EDIT  looking at your header  you need to avoid doing any HTML output if you want to output headers  or use output buffering to capture it    Finally  as the PHP manual page for header points out  you should really use full URLs to redirect      Note  HTTP 1 1 requires an absolute   URI as argument to Location     including the scheme  hostname and   absolute path  but some clients accept   relative URIs  You can usually use     SERVER  HTTP HOST        SERVER  PHP SELF    and dirname   to   make an absolute URI from a relative   one yourself

User · Answer

COMMON PROBLEMS   1  There should be NO output  i e  echo    or HTML parts  before the header       command   2  After header       you must use exit       3  Remove any white-space or newline  before  lt  php and after   gt  tags   4   Check that php file  and also other  php files  that are included  -  they should have UTF8 without BOM encoding  and not just UTF-8    Because default UTF8 adds invisible character in the start of file  called  BOM    so you should avoid that               5  Use 301 or 302 reference   header  location  http   example com    true   301     exit    6  Turn on error reporting  And tell the error   7  If none of above helps  use JAVASCRIPT redirection  however  discouraged method   may be the last chance in custom cases       echo   lt script type  text javascript  gt window top location  http   website com    lt  script gt    exit

User · Answer

Don t include header php  You should not output HTML when you are going to redirect   Make a new file  eg   pre php   Put this in it    lt  php include  class user php    include  class Connection php      gt    Then in header php  include that  in stead of including the two other files  In form php  include pre php in stead of header php

User · Answer

Try redirection with JavaScript    lt script type  text javascript  gt    window location href  index php    lt  script gt

User · Answer

Look at  Applications MAMP htdocs testygubbins OO test header php line 15   At that position  it makes some output  Fix it

User · Answer

Don t include header php  You should not output HTML when you are going to redirect   Make a new file  eg   pre php   Put this in it    lt  php include  class user php    include  class Connection php      gt    Then in header php  include that  in stead of including the two other files  In form php  include pre php in stead of header php

[php] PHP Header redirect not working

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