You might be able to pass them as a cookie. Bruce Karstedt President Technology Consulting Associates, Ltd. Tel: 847-735-9488 Fax: 847-735-9474
-----Original Message----- From: Jed Verity [mailto:[EMAIL PROTECTED]] Sent: Saturday, June 29, 2002 2:59 PM To: Chris Shiflett Cc: [EMAIL PROTECTED] Subject: Re: [PHP] Javascript to PHP? Importance: Low Hello, Chris, Many thanks for the thorough description. It does make sense, of course...I was just hoping that there was some kind of funky loophole that small brains like mine couldn't comprehend. Thanks again! Jed I liked it when Chris Shiflett wrote this to me: > Jed Verity wrote: > >> I can't find any information on passing JavaScript variables to PHP on the >> same page (i.e. not through the POST information of a submitted form). Is >> this because it's not possible? >> > Basically, this is not possible. > > A common area of confusion to those new to Web programming is the > distinction between client-side and server-side code. PHP is an example > of a server-side scripting language, while JavaScript is client-side. To > PHP, anything that is not PHP is simply output. It doesn't matter if the > output is HTML, JavaScript, XML, an image, etc. - it's all "not PHP." > > When a user requests a PHP script, the PHP part of the script is > executed prior to the output being sent to the client. Remember, the > output may contain JavaScript. Once the output reaches the browser, the > browser will attempt to render the HTML, execute the JavaScript, and > whatever else is appropriate. So, to get back to your question, you are > wanting to know how to have the browser (which is executing the > JavaScript) be able to send a JavaScript variable to PHP (which could be > thousands of miles away on whatever Web server the page was obtained > from) "on the same page," which means you want to be able to do this > without communicating back to the Web server. > > So, your question can be summarized into: > > "How can my browser send data back to the Web server without any further > communication with the Web server?" > > Hopefully that explains how it is impossible. > > The terms server-side and client-side are ignored by most people, > understandably, because this industry is littered with useless terms > that do little to describe what is really happening (in the case of "Web > services," the term is actually misleading in my opinion). However, > these terms are very descriptive, and once you can begin to understand > which code is executed on the server-side (by the Web server prior to > sending the response to the Web client) and which code is executed on > the client-side (by the Web client after receiving the response from the > Web server), all of these types of questions will make more sense to you. > > Hope that gives a good description of the difference and can help you > solve whatever problem you're currently working on. > > Chris > > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
