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Php how-to for starters
Taking web design to the next extreme
By Red Squirrel

Slashes, quotes and stuff
In a typical script that POSTs data, if there is any quotes or slashes that are typed, they will be formatted for php. For example, " will end up like \" and \ will end up like \\ and same with single quotes. To fix that problem, you need to use the stripslashes() function to the variable.

To do this, you simply need to go like this:

$myvariable = stripslashes("this is data with \"quotes\" and slashes\\ and \'single quotes\'");

That string of text could be a variable as well. A $_POST variable that has posted data will always end up like that. This is because in order to write a string with quotes, it has to be in that format. For example, this:

Echo("this is data with \"quotes\" and slashes\\ and \'single quotes\'");

Would show up as this:

this is data with "quotes" and slashes\ and 'single quotes'

If you did not type it that way in the echo function, you'd get a parse error. A parse error is whenever there is a problem with the script. Thankfully, it usually gives you good information and what line it's on, so you can go fix it. Something as simple as a missing semi colon can result in a parse error.

From here, you should be ready to start making simple scripts with php, and move on to more advanced functions.

Red Squirrel / Ryan
Owner, IceTeks.com

395481 Hits Pages: [1] [2] [3] [4] [5] 28 Comments

Latest comments (newest first)
Posted by halojoy on June 06th 2005 (22:36)
Yes, it is nice with scripts that does note produce notices.
isset is a good way to avoid this,
if you do not want to add a lot of code that sets 'empty' values for variables

Another way is to TURN OFF reporting of NOTICE
you add this, at top (beginning) of your php pages:

// Report ALL, but not NOTICE
error_reporting ( E_ALL & ~E_NOTICE );

// You will still get WARNINGS and other real ERRORS
// Notice is not an error, just a note
// To not have to add it in all your pages you can make it a line in 'config.php' ,
//  if you have such a file, that is included by php pages
I use E_ALL = reporting with notices only when working with my code
When I am finished and put my code on website, I Turn Notice OFF, using that line.
I do not want to scare my visitors laugh.gif

Posted by Red Squirrel on November 11th 2004 (14:13)
You need to run it off a webserver that has php installed.

So you would type http://serverhost/script.php

Posted by Red Squirrel on October 10th 2004 (16:32)
It means you have a syntax error in your mysql query, unfortunatly mysql is not very helpful at telling WHAT the error is, so you'll have to figure that part out. Post the query and maybe I can look at it and find the problem.
Posted by jewboy419 on October 10th 2004 (15:34)
pressanykey.gif i am doing a php on euoropean lycos and i get an error when using this code: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near" the first line of the code... can' anyone help!!!
Posted by sintekk on October 10th 2004 (11:18)
QUOTE (Red Squirrel @ Jul 6 2004, 08:41 PM)
Tripod actually has php amd mysql? That's cool, I did not know that.

Only the European lycos, the US one still believes that everybody that wants a website with them just wants to make a Hillary Duff fan page laugh.gif

...now only if there was a free ColdFusion host out there sad.gif...

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