En enkel lektion i PHP
I would highly recommend Aptana due to its ability to incorporate with other languages such as xhtml, javascript, and css, along with php. The included validation tools are a great plus. The basic version is free.
Din första PHP-sida
Skapa en fil och döp den till hello.php, lägg den sedan i din webbkatalog. Innehållet i filen ska vara följande:
Example#1 Vårt första PHP-script: hello.php
<html>
<head>
<title>PHP Test</title>
</head>
<body>
<?php echo "<p>Hello World</p>\n"; ?>
</body>
</html>
Utdatan från det här scriptet kommer bli:
<html> <head> <title>PHP Test</title> </head> <body> <p>Hello World</p> </body> </html>
Notera att PHP-scriptet inte fungerar på samma sätt som ett CGI-script. Filen behöver inte vara exekverbar eller skilja sig från vanliga HTML-filer på något sätt vad det gäller rättigheter eller ägarskap. Du kan tänka dig PHP-filen som en vanlig HTML-fil fast med ett antal specialtaggar med vilka du kan utföra massor av intressanta saker.
Det här programmet är egentligen så simpelt att du inte skulle behöva PHP för dess funktion. Allt scriptet gör är att visa texten Hello World genom att anropa PHP-funktionen echo().
Om du prövar det här exemplet och det inte skriver ut något, eller du blir tillfrågad om du vill ladda ner filen, eller om du helt enkelt ser hela filen som vanlig text finns det risk att din webbserver inte har PHP inlagt. Du kan då fråga din administratör om han kan installera det åt dig, vägledning finns i kapitlet som behandlar installation. Om du vill utveckla PHP-script lokalt behöver du » ladda ner PHP. Du kan utveckla dina script på vilket operativsystem som helst, om du installerar en webbserver som fungerar med PHP.
Poängen med scriptet ovan är att demonstrera hur PHP-taggar fungerar. I det här exemplet använde vi <?php för att inleda PHP-koden. Sedan skrev vi vår kod och avslutade med ?>. Du kan utan problem växla mellan HTML- och PHP-kod hur mycket du vill i ditt dokument.
add a note
User Contributed NotesDin första PHP-sida
anpnymous
09-Sep-2008 01:28
09-Sep-2008 01:28
schneider at georgia dot com
08-Jul-2008 11:30
08-Jul-2008 11:30
also I just started using HomeSite which is also a very good and simple to use editor. It compliments Dreamweaver quite well.
pld at dervey dot co dot uk
23-Jun-2008 09:14
23-Jun-2008 09:14
Always been happy with the facilities available in Dreamweaver (cur CS3), although the footprint on your PC can be high so notepad++ comes in second for little use of PC resources.
Anonymous
08-Jan-2008 07:30
08-Jan-2008 07:30
The most usefull editor for me is Eclipse PDT and the debugger provided by Zend to the open source community.
Please check: http://www.zend.com/en/community/pdt
http://www.eclipse.org/pdt/
It's not only an editor, but an IDE also.
Good luck!
BN
byroniac at aol dot com
01-Jan-2008 01:46
01-Jan-2008 01:46
For text editors, my current favorites are Bluefish on Linux, and Notepad++ on Windows. I believe you can't go wrong with these (and I believe Bluefish is available in many Linux distributions in pre-packaged form). I'm not affiliated with either of these; I'm just a satisfied user.
http://bluefish.openoffice.nl/
http://notepad-plus.sourceforge.net/uk/site.htm
Lori
09-Sep-2007 06:51
09-Sep-2007 06:51
Re: .txt extensions at the end of Notepad files
I am not a programmer, but I do know that when you ftp files to a server, not only is the real name of the file shown that you want to transfer, but you can change it to whatever you want on the other end. I know that can make uploading a lot of files a pain, but then, I have never had to upload that many files. I remember a long time ago having to change .htm to .html, but I have never encountered the problem of having a .txt added that I didn't want.
jt at fuw dot edu dot pl
19-May-2007 07:48
19-May-2007 07:48
Well, but PHP file ownership is important when server has safe_mode enabled - HTTP server checks it, uses it to set UID of process which executes it, or may even refuse to execute such a file - e.g. if one user is owner of main PHP file, and the main file includes another, owned by other user, this is considered to be security violation (quite reasonably).
tinscurv at Hotmail dot com
12-Apr-2007 01:29
12-Apr-2007 01:29
I noticed that it mentioned to add a "double quote" i.e "hello.php", when saving a php file when the drop down menu says txt. It is not necessary. You can type the whole name without quotes when the drown down menu is either txt or all. UNLESS, maybe for older windows? But for newer windows, it is not necessary. It works without a double quote. Anyway, if double quote is mentioned in the manual, then window versions needs to be stated.
Geoff
18-Mar-2007 06:56
18-Mar-2007 06:56
People with file extension woes on Win32 really just need a better text editor. Notepad2 is easy, very like notepad and supports syntax highlighting; quite a neat little thing:
http://www.flos-freeware.ch/notepad2.html
...and it won't mangle your file extensions. Of course there are lots of others, but I use this one at work and it's OK when you have to work on Windows toasters. Of course EMACS is also available on Win32 for those who like that sort of thing but Notepad2 is a neat, minimal, easy to use app for those who are generally comfortable in the Windows environment and might be intimidated by EMACS.
Stewart
05-Jan-2007 05:55
05-Jan-2007 05:55
No need to go through these contortions each time to make sure the file is properly saved with the .php extension. Just register .php as a file type in Windows, and then saving as hello.php without the quotes will work fine.
HobbyTech
09-Aug-2006 01:12
09-Aug-2006 01:12
On Windows, if file extensions can be hidden, you may not SEE that you have accidently saved a file as 'Text Documents' (and that the browser has added '.txt' to the end of your 'page.html', resulting in 'page.html.txt'.) You still see only 'page.html' even though it's really 'page.html.txt'. Also, if you try to rename it, it won't work because it's not overwriting the '.txt' part and not changing the filetype.
By the way, the hiding of file extensions is ALSO a way malicious crackers get you to click on an executable virus, fooling you into thinking it's an innocent document. You should always be able to view the extensions of all files on your system.
To view all extensions, open Windows Explorer. Click the 'Tools' menu, then 'Folder Options'. In the dialog box that appears, click the 'View' tab. In the 'Advanced Settings Box', scroll down to 'Hide extensions for known file types' and click the checkbox next to it to REMOVE THE CHECKMARK. Click the 'Apply to All Folders' button near the top of the dialog. This may or may not take a few minutes. Then click the 'OK' button to close the dialog.
Now, if something accidentally gets saved as the wrong filetype, resulting in another file extension automatically appended to the one you typed, you will see it and be able to rename it.
Of course, a badly-named file can be renamed simply by using 'Save As' and saving it as the proper filetype, but if you can't see the file extension, you may not know that is the problem. Also, renaming is easier than opening, resaving as a new filetype, and then deleting the old version!
c300501 at yahoo dot com
07-Jun-2006 09:26
07-Jun-2006 09:26
document_root variable is located in your web server configuration file
onebadscrivener at gmail dot com
17-Jan-2005 08:25
17-Jan-2005 08:25
OS X users editing in TextEdit will need to make sure their TextEdit preferences are set to allow plain text files. Under the TextEdit pull-down menu, choose PREFERENCES, then under NEW DOCUMENT ATTRIBUTES in the window that pops up, click PLAIN TEXT.
Then, in the section of that same window called "saving," DESELECT "append .txt extension to plain text files." This will allow you to save your files with a .php extension.
Then close the PREFERENCES window. You're good to go.
Curtis
10-Aug-2004 05:47
10-Aug-2004 05:47
Expansion on saving w/ notepad/wordpad: (tested on XP; but should work on 2000,NT, and 98)
You can associate the .php file extension w/ Windows w/o going into the registry.
Open up My Computer or MSIE in file mode. Go to folder options > File types tab. Now click new. Add the extension as PHP or php. If you can't find the PHP application in the dropdown list under advanced, just go OK, for now. At least the extension is in place.
Now, try and create a php file by using the directions from this page of the PHP tutorial (should save it with the rest of your HTML files, i.e. your DocumentRoot). If you go to view your php file listed in the directory, and you see that it's still a .txt file, right-click the icon to see if you can locate "open with." If so, you should be able to browse for the appropriate file, which should be at (may vary, depending on where you installed PHP):
C:\PHP\php.exe
Click that as the default program, and the PHP logo should appear on all your scripts, and no problems saving should occur w/ any program.
Good luck.
ryan420 at earthling dot net
03-Feb-2003 05:18
03-Feb-2003 05:18
Note on permissions of php files: You don't have to use 'chmod 0755' under UNIX or Linux; the permissions need not be set to executable. Again, this is more like a html file than a cgi script. The only mandatory requirement is that the web server process has read access to the php file(s). With many Linux systems, it is popular for Apache to run under the 'apache' account. Given that HTML and other web files, like php, are often owned by user 'root' and group 'web' (or another similar group name), acceptable permissions might be those achieved with 'chmod 664' or 'chmod 644'. The web server process, running under the 'apache' account, will inherit read only permissions. The 'apache' account is not root and is not a member of the 'web' group, so the "other" portion of the permissions (the last "4") applies.