Re: Retrieving Image Location in PHP from MySQL

haliphax wrote:

On Mon, Mar 9, 2009 at 8:43 PM, Sashikanth Gurram <sashi34u@vt.edu> wrote:

Is there any way in which I can assign a variable to a query string? Like for example, Let us say that there are two php files a.php and b.php. I am currently using a image tag like <img src="imgtest.php?id=Williams Hall" /> in a.php and am passing the value to another variable using $build=$_GET['id']; in b.php. Now for this purpose, I am using the img tag in the html part of my first file which makes it kind of static. Now if I want to assign a variable (say $building) to 'id' in my first file, and retrieve it using the variable $build in the second file what is the best way to do it? Will the command (written inside the PHP tags) echo ' <img src="imgtest.php?id=$building />'; be of any help in performing the task. I have actually tried this out, but it did not work for me (May be my syntax is wrong although I have tried various combinations). So, is there a better way or correct way of doing this (If what I have done is wrong). I have tried to use $_session() command, but it is kind of yielding me a header error.

I'm not sure if this has been addressed in any of the other replies, but I felt it was worth mentioning: Be careful and pay attention to whether you are using single quotes ( ' ) or double quotes ( " ) in your echo statements! $var = 'asdf'; echo 'hey, $var'; // "hey, $var" echo "hey, $var"; // "hey, asdf" ...and if you're using single or double quotes elsewhere (i.e., assignment operations)... $var = 'asdf'; $othervar = 'blah$var'; // "blah$var" $anothervar = "blah$var"; // "blahasdf" $yetanothervar = "blah{$var}blah"; // "blahasdfblah" Double quotes, when not using "echo", can still parse variables for you. Thanks, Haliphax. I knew this stuff from janet valede's PHP for dummies.

-Sashi -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Sashikanth Gurram Graduate Research Assistant Department of Civil and Environmental Engineering Virginia Tech Blacksburg, VA 24060, USA