[PHP] PHP inserting carriage returns into POST values?
Hey everyone. I ran into a really weird issue that I was hoping I could find some clarification on. In short, I have javascript functions that operate on hidden text values. Those values may be posted, in which case PHP then prints them back to the page via what comes in on $_POST. The weird thing is, I was no longer able to match substrings inside those hidden text values after posting via Javascript. I banged my head over this for a couple hours, until I realized that the string's length was being increased by one after posting (I found this out in javascript). Upon further investigation, I found that all instances of substring\n were being replaced by substring(carriage return)\n after post. For now, I'm simply doing str_replace(chr(13), , $_POST['value']) before re-inserting it into the HTML, but I was wondering why PHP is inserting those extra characters. Thanks! James -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] PHP inserting carriage returns into POST values?
On Fri, Sep 4, 2009 at 3:16 PM, James Colanninoja...@colannino.org wrote: Hey everyone. I ran into a really weird issue that I was hoping I could find some clarification on. In short, I have javascript functions that operate on hidden text values. Those values may be posted, in which case PHP then prints them back to the page via what comes in on $_POST. The weird thing is, I was no longer able to match substrings inside those hidden text values after posting via Javascript. I banged my head over this for a couple hours, until I realized that the string's length was being increased by one after posting (I found this out in javascript). Upon further investigation, I found that all instances of substring\n were being replaced by substring(carriage return)\n after post. For now, I'm simply doing str_replace(chr(13), , $_POST['value']) before re-inserting it into the HTML, but I was wondering why PHP is inserting those extra characters. Thanks! James Are you sure it is PHP? Just a couple ideas... Javascript interpolates \n as a newline character inside both double and single quotes unlike PHP that only interpolates inside double quotes. If the client browser is running under Windows, it may even be possible that the \n is recognized by the browser as a line terminator and converted to the Windows line terminator sequence (\r\n) either inside the form element itself or in the Javascript you are using to post back to the web server. Andrew -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] PHP inserting carriage returns into POST values?
Andrew Ballard wrote: Javascript interpolates \n as a newline character inside both double and single quotes unlike PHP that only interpolates inside double quotes. If the client browser is running under Windows, it may even be possible that the \n is recognized by the browser as a line terminator and converted to the Windows line terminator sequence (\r\n) either inside the form element itself or in the Javascript you are using to post back to the web server. Both the server and the client are Linux machines, so there are no issues with incompatible representations of newline. I only ever place \n's inside double quotes in PHP, and am aware of the fact that I don't have to do that in PHP. For the life of me, I just can't figure out what's happening. Anyway, for now, filtering \r's out in PHP seems to do the trick. James -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] PHP inserting carriage returns into POST values?
On Fri, Sep 04, 2009 at 12:16:47PM -0700, James Colannino wrote: Hey everyone. I ran into a really weird issue that I was hoping I could find some clarification on. In short, I have javascript functions that operate on hidden text values. Those values may be posted, in which case PHP then prints them back to the page via what comes in on $_POST. The weird thing is, I was no longer able to match substrings inside those hidden text values after posting via Javascript. I banged my head over this for a couple hours, until I realized that the string's length was being increased by one after posting (I found this out in javascript). Upon further investigation, I found that all instances of substring\n were being replaced by substring(carriage return)\n after post. For now, I'm simply doing str_replace(chr(13), , $_POST['value']) before re-inserting it into the HTML, but I was wondering why PHP is inserting those extra characters. I don't know that this will help, but maybe it will provide a clue. A textarea field will insert CRLF in its posted contents. You might expect this to be governed by the platform the browser is running on, but no. It inserts CRLF anyway. Like I said, just a clue. Paul -- Paul M. Foster -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
