PHP 4.0 Bug #3610: Header( ) Output requires echo after to flush output

From: tswan@ics.olemiss.edu Operating system: RedHat Linux 6.0 (2.2.14) PHP version: 4.0 Beta 4 Patch Level 1 PHP Bug Type: Scripting Engine problem Bug description: Header( ) Output requires echo after to flush output __*** PROBLEM ***___ I included the script and the important part of the output'd HTML. The problem was that the headers weren't output at the right time. I think it might be something with the scoping of the output lines in the if statement apparently it doesn't think output is happening until the return of this function. If I'm way out on limb, just cut it and let me fall. BTW, the compile options are included after the output section. This function was called from a different script file referencing it as require('common.php3'); This worked correctly under PHP 3.0.12-3.0.14. Also, this is one of my first scripts using PHP so I don't have a lot of style or effeciency in this one, and since it works, I haven't bothered to change it until now. Please note this code was inside a function that I called for a general purpose header... --***** SCRIPT *****__ header("Content-Type: text/html"); // Type of Content header("Expires: Mon, 20 Jul 1978 05:00:00 GMT"); // Date in the past header("Last-Modified:" . gmdate("D, d M Y H:i:s") . " GMT"); // always modified header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1 header("Pragma: no-cache"); // HTTP/1.0 echo "\n"; // REQUIRED TO OUTPUT... global $debug; global $background_color; if ($debug) { echo ("<HTML>\n<HEAD>\n<TITLE>\n</TITLE>\n"); echo "<LINK REL=FONTDEF SRC=/pfrs/Zurich.pfr>\n"; echo "<LINK REL=FONTDEF SRC=/pfrs/Rage_Italic_LET_Plain.pfr>\n"; echo "<LINK REL=STYLESHEET TYPE=text/css HREF=/stylesheets/normal.css TITLE=normal>\n"; echo ("</HEAD>\n"); if (empty($background_color)) { echo "<BODY STYLE=\"background-image: none;\" BGCOLOR=\"#DDDDDD\">\n"; } else { echo "<BODY STYLE=\"background-image: none;\" BGCOLOR=\"" . $background_color . "\">\n<P>\n"; } } else { virtual("includes/section_00.html"); virtual("includes/section_01.html"); switch ($section) { case "ICS Administration" : echo "<IMG SRC=\"../images/toolbar_image_01.gif\" NAME=\"main_top_middle\" WIDTH=224 HEIGHT=110 BORDER=0 VSPACE=0 HSPACE=0 VALIGN=TOP ALIGN=LEFT>"; break; default : echo "<IMG NAME=\"main_top_middle\" WIDTH=224 HEIGHT=11 BORDER=0 VSPACE=0 HSPACE=0 VALIGN=TOP ALIGN=LEFT>"; } virtual("includes/section_02.html"); echo $section . "\n"; virtual("includes/section_03.html"); echo $sub_section . "\n"; virtual("includes/section_05.html"); } --******************************************--- This produced the output... --******************************************--- <HTML> <HEAD> <TITLE>The Institute for Continuing Studies</TITLE> <META NAME="RATING" CONTENT="General"> <META NAME="AUTHOR" CONTENT="Thomas Swan, Amelia Rodgers, Britt Fitts"> <META NAME="DESIGN" CONTENT="Thomas Swan"> <META NAME="COPYRIGHT" CONTENT="Copyright 1999, University of Mississippi"> <META HTTP-EQUIV="REPLY-TO" CONTENT="webteam@tangent.ics.olemiss.edu%20(Comments)"> <META HTTP-EQUIV="PICS-Label" CONTENT='(PICS-1.1 "http://www.rsac.org/ratingsv01.html" l gen true comment "RSACi North America Server" for "http://www.ics.olemiss.edu" on "1999.09.07T16:42-0800" r (n 0 s 0 v 0 l 0))'> <META HTTP-EQUIV="PICS-Label" CONTENT='(PICS-1.1 "http://www.classify.org/safesurf/" l r (SS~~000 1))'> </HEAD> <LINK REL=FONTDEF SRC="/pfrs/Zurich.pfr"> <LINK REL=STYLESHEET TYPE="text/css" HREF="/stylesheets/normal.css" TITLE="normal"> <!-- start Bitstream TDServer.ocx support --> <SCRIPT LANGUAGE="JavaScript" SRC="http://www.ics.olemiss.edu/activex/tdserver.js"> </SCRIPT> <!-- end Bitstream TDServer.ocx support --> <!-- IE cannot used burned fonts due to a design flaw, therefore we need to add some usefulness to it... :) --> <SCRIPT LANGUAGE="Javascript"> var bannerColor="#000066"; var toolbar_offset = 0; function setBannerColor (newColor) { bannerColor=newColor; } </SCRIPT> <BODY BACKGROUND="../images/pinstripe_blue.jpg" BGCOLOR="#FFFFFF" TEXT="#000000" ALINK="#660000" VLINK="#005044" LINK="#005044" MARGINWIDTH=0 MARGINHEIGHT=0> <BASEFONT FACE="'Zurich BT', Helvetica, Arial, 'Sans Serif', SansSerif, sans-serif, sanserif" SIZE=2 PIXEL-SIZE="14px"> <TABLE BORDER=0 WIDTH=100% HEIGHT=110 CELLPADDING=0 CELLSPACING=0> <TR> <TD ROWSPAN=7 COLSPAN=1 WIDTH=37 HEIGHT=110 VALIGN=TOP ALIGN=LEFT BGCOLOR=WHITE BACKGROUND="../images/ics_toolbar_background_c.jpg" STYLE="background-repeat: no-repeat"> <IMG ALT="" SRC="../images/top_left_wedge.gif" NAME="main_top_left" WIDTH=37 HEIGHT=110 BORDER=0 VSPACE=0 HSPACE=0 VALIGN=TOP ALIGN=LEFT> </TD> <TD ROWSPAN=7 COLSPAN=1 WIDTH=224 HEIGHT=110 VALIGN=TOP ALIGN=LEFT BGCOLOR=WHITE BACKGROUND="../images/ics_toolbar_background_g.jpg" STYLE="background-repeat: no-repeat"> HTTP/1.1 200 OK Date: Thu, 24 Feb 2000 20:50:01 GMT Server: Apache/1.3.6 (Unix) (Red Hat/Linux) PHP/4.0b4pl1 X-Powered-By: PHP/4.0b4pl1 Expires: Mon, 20 Jul 1978 05:00:00 GMT Last-Modified: Thu, 24 Feb 2000 20:50:01 GMT Cache-Control: no-cache, must-revalidate Pragma: no-cache Connection: close Content-Type: text/html <IMG NAME="main_top_middle" WIDTH=224 HEIGHT=110 BORDER=0 VSPACE=0 HSPACE=0 VALIGN=TOP ALIGN=LEFT> </TD> <TD ROWSPAN=1 COLSPAN=1 WIDTH="95%" HEIGHT=11 VALIGN=TOP ALIGN=LEFT> <IMG ALT="" SRC="../images/clear_5x5.gif" WIDTH=5 HEIGHT=11 BORDER=0 VSPACE=0 HSPACE=0 VALIGN=TOP ALIGN=LEFT> __**** REST OMITTED FOR BREVITY ****____ __*** Compilied Options ***___ Configure command: ./configure '--prefix=/usr' '--localstatedir=/var' '--with-config-file-path=/etc/httpd' '--enable-magic-quotes' '--enable-trans-sid' '--enable-safe-mode' '--enable-shared' '--enable-static' '--disable-track-vars' '--enable-freetype-4bit-antialias-hack' '--with-x' '--with-apxs' '--with-cpdflib=/usr' '--with-pdflib=/usr' '--with-jpeg-dir=/usr' '--with-tiff-dir=/usr' '--with-gdbm' '--with-zlib-dir=/usr' '--with-imap=/usr/src/imap/c-client' '--with-ftp' '--with-gd=/usr' '--with-ttf=/usr' '--with-mysql=/usr' '--with-png-dir=/usr' '--with-regex=php' '--enable-sysvsem' '--enable-sysvshm' '--enable-versioning' '--enable-inline-optimization' '--with-gnu-dl' php.ini path: /etc/httpd ZEND_DEBUG=1 SAPI=Apache ZTS is undefined Compiled using gcc 1.1.3 (Whatever shipped with RH 6.0) Apache version 1.3.6 EXTRA_OPTS = '-march=pentiumpro -fexpensive-optimizations' __*** NOTES ***__ _ I'll be working on a smaller test case __ :)