FUDforum: comp.lang.php » Names of URL Parameters

Home » Imported messages » comp.lang.php » Names of URL Parameters

Show: Today's Messages :: Polls :: Message Navigator

Re: Names of URL Parameters [message #175455 is a reply to message #175424]

Wed, 28 September 2011 18:46

tamouse
Messages: 5
Registered: September 2011

Karma:

Junior Member

Since the question seems directed to debugging, you should know about two functions: print_r and var_dump:

http://us2.php.net/manual/en/function.print-r.php
http://us2.php.net/manual/en/function.var-dump.php

In both of these cases, the standard behaviour is to dump the variable structure straight to the standard output (most likely your browser window/tab). This can be problematic for a few reasons, and can be a security risk if you're not careful.

print_r has a second paramter, which if set to TRUE, will return it's output as a string, which you can sanitize before sending to output thus:

echo "<pre>" . htmlentities(print_r($var,TRUE)) . "</pre>" . PHP_EOL;

This sort of thing will prove invaluable in debugging php code for the newbie.

If you're doing a fair bit of this, you might want to set up a function for debugging, and use a global to turn on/off debugging. Lots of these exist already, some very sophisticated, some very simple.

Extremely simple:

function dbg($var)
{
if ($GLOBALS['DEBUG'])
{
echo "<pre>".print_r($var,TRUE)."</pre>".PHP_EOL;
}
}

And you can set $GLOBALS['DEBUG'] in a number of ways, such as in a common configuration file that is included in your application, or by introducing a DEBUG parameter in the $_REQUEST hash.

Some people (*cough*) go so far as to write a debugger class with all sorts of fancy bells and whistles, such as including the file, function, and line number where the debugging call is made, among others.

Report message to a moderator

[Message index]

		Names of URL Parameters By: eBob.com on Wed, 21 September 2011 20:56
		Re: Names of URL Parameters By: The Natural Philosoph on Wed, 21 September 2011 21:06
		Re: Names of URL Parameters By: Thomas 'PointedEars' on Wed, 21 September 2011 21:46
		Re: Names of URL Parameters By: eBob.com on Thu, 22 September 2011 03:27
		Re: Names of URL Parameters By: Peter H. Coffin on Thu, 22 September 2011 12:43
		Re: Names of URL Parameters By: Richard Damon on Thu, 22 September 2011 17:36
		Re: Names of URL Parameters By: tamouse on Wed, 28 September 2011 18:46
		Re: Names of URL Parameters By: tamouse on Wed, 28 September 2011 19:18
		Re: Names of URL Parameters By: sheldonlg on Thu, 29 September 2011 13:15

Previous Topic:	best editor
Next Topic:	discussing LeBron 8 PS

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Fri Sep 20 04:33:40 GMT 2024

Total time taken to generate the page: 0.05146 seconds