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PostPosted: Tue May 11, 2004 5:19 am 
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Joined: Thu Aug 15, 2002 5:53 am
Posts: 4235
Location: Sussex, UK
This post is quite old. Much has changed since it was written.
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This tutorial is aimed at people taking their first steps with php.

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Install a local server:

A local development server is essential to test out your work. GNU/Linux & BSD (except mac) usually have a web server already set up. For others, there are lots of options with php/mysql/apache in a single, easy to install packages:

http://www.hotscripts.com/PHP/Software_ ... tion_Kits/

php.ini settings

Once you've installed php/mysql/apache, I'd recommend checking the following in your php.ini file:

error_reporting = E_ALL
display_errors = On
register globals off (it's off by default for php v4.2+)
magic_quotes_gpc - see notes, below
magic_quotes_runtime - off

Mac users may find that they don't have a php.ini to edit. See these forum topics:

.


Note that you should turn the error reporting level down on a live site to avoid giving out information about your scripts or db structure which a hacker might try to exploit.

Register globals on can potentially create a security risk. If you have any undefined vars/indexes in the script, a site visitor can set them to any value they like (more ). However if you develop with E_ALL you will (presumably) have identified any such and dealt with them, so register globals on would not create any security issues.

Many hosts keep reg globals on for backwards compatibility. Scripts developed with reg globals off will work OK in a reg globals on environment - but not vice versa. So, quite apart from possible security issues, it's better to develop with reg globals off. One day your host will upgrade and your old scripts won't work.

Magic quotes on might be viewed as a useful safety net for inexperienced programmers. Personally, I think that Magic Quotes are Evil. It's your call.

Unlike register globals, a script which works with magic_quotes_gpc off won't work perfectly with it on. The "pro" way is to always set magic quotes off - local and live (if you can) - as well as applying the fix (see above link) to distributed programs which might be run in other environments.

Database Managers

You probably got the excellent phpMyadmin with one of the php/mysql/apache packages above. If not see http://www.phpmyadmin.net/. Other db managers worth a look are , and .


Manuals

You can view the online manual at . There are also for those of us who still don't have broadband. I'd recommend the version with user comments. Essential reading - but note that user comments are not always correct. The ones that aren't will usually be picked up on.

Apache info: http://www.apache.org/
- as with php.net, online and downloadable manuals here.
Of course php works with all kinds of databases, including http://www.postgresql.org/ .

Script editors

A proper script editor with syntax highlighting, cliptext, find in files, etc makes life much easier. is an inexpensive favourite for many. is free. for the mac and for linux are other popular choices. If your bank balance is up to it, take a look at .
Discussions around this is also available in and in .

Php Tutorials

The internet is a fantastic resource for php tutorials. might be a good place to start.

Many good tutorials on these sites: and

A variety of internet related tutorials as well as php here:

And check out the links on .

If all that was too basic try this:

Database Tutorials

Database design is often neglected but it's the essential foundation of a php web site. Table joins, normal forms: you've got to know it all.
DevShed and (pdf document)

For a general and hands-on excellent SQL-tutorial: http://sqlzoo.net/

Phpcomplete.com http://www.phpcomplete.com has several PostgreSql tutorials.

Coding Styles

Coding styles are a matter of personal preference but it's best to follow common practices as far as possible. One day you might be working in a team or at the very least you're going to be asking for help on the forums. Other people will have to figure out what you're code is doing so a consistent style is a good habit to get into from the start.

might be a good place to start reading.

Regex

You may find regular expressions (regex) to be a mind-bendingly frustrating experience. Don't worry: that's normal. Regex'ing was invented by evil madmen for that very purpose. The good news is that you can often use one of the string functions - eg str_replace(), substr() etc - instead. These are preferred since they are slightly faster. You'll rarely need the extra power of regex.

The posix (), () functions are marginally slower than perl-style , etc and so the latter are preferred. The syntax is explained in the

And here's a useful little tool to test expressions: http://www.weitz.de/regex-coach/#install

Php Scripts & Programs

There are thousands of php programs available for free at .

One day, when you start mucking about with OOP (object orientated programming), you might want to take a look at another phpdn site: . Also, is an excellent source for OOP design.

Help

If you've got a problem the first step is to get the manual out. is your best friend. Love it, cherish it and, above all, read it. Next try a ; there's a wealth of information in here and there's a good chance your problem has been dealt with before.

If that doesn't work, pick the appropriate forum and post a message.

The art of asking good questions: http://www.catb.org/~esr/faqs/smart-questions.html

On our discussion boards, the focus is more on helping people to learn rather than simply handing out working scripts. Someone who is making a real effort to tackle a problem is much more likely to receive help than a "please can anyone give me a file upload script" type of post.

If you post code, don't forget to use the [syntax="php"] BB code tags: syntax highlighting & proper indentation makes it much easier to read - and so more likely that you'll get a response.

( JAM | Last edited. Removed EW.com aswell as fixing links, syntax's and smaller adjustments. )
( Weirdan | Removed/fixed several links, changed syntax advice, removed hosting section (tripod is dead), added note about outdated content)


Last edited by Celauran on Thu Dec 04, 2014 7:47 am, edited 7 times in total.
Removed dead DevShed link


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PostPosted: Tue May 11, 2004 5:22 am 
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DevNet Master
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Joined: Thu Aug 15, 2002 5:53 am
Posts: 4235
Location: Sussex, UK
To make suggestions or comments please go to .

For direct changes (ie. urls not working, spelling aso aso), messaging any mod directly will work aswell.


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