PHP-Scripts Blog » PHP 4.x

Open source phpMyEdit

TDavid — Sun, 12 Nov 2006 14:08:29 +0000

generates PHP code for displaying/editing MySQL tables in HTML. All you need to do is to write a simple calling program (a utility to do this is included). It includes a huge set of table manipulation functions (record addition, change, view, copy, and removal), table sorting, filtering, table lookups, and more.

Download (gz).

Apache + PHP on Mac OS X

TDavid — Wed, 05 Apr 2006 18:40:50 +0000

Though the screenshots have changed the basic process is the same, Kevin Hemenway, takes readers through how to setup an Apache server on Mac OS X and then how to turn on PHP 4.

To edit the httpd.conf I needed to do the following:

1. start Terminal by going to Utilities/Terminal
2. type the following into the terminal:

sudo emacs /etc/http/httpd.conf

3. enter in your admin password
4. Inside emacs, uncomment the line

#LoadModule php4_module

to read:
LoadModule php4_module

and change:
# AddModule mod_php4.c

to read:
AddModule mod_php4.c

Then add the following in the AddType section:

AddType application/x-httpd-php .php
AddType application/x-httpd-php-source .phps

5. Save and exit from emacs
CTRL + x, CTRL +s = saves changes use the following keyboard combination
CTRL + x, CTRL +c = exit

6. I created a phpinfo() script using the freeware Taco editor.

< ?php
phpinfo();
?>

7. Want to install MySQL on OS X too? I’ll leave that one for readers (or come back and update this entry or add a new one).

8. I chose to download the MySQL 4.1 binary here. Once downloaded open the package and double click the appropriate package. I chose mysql-max-4.1.18-apple-darwin8.2.0-powerpc.pkg. It will vary based on what type of Mac you have.

9. After install I chose to startup the database manually using the Terminal shell commands:

shell> cd /usr/local/mysql
shell> sudo ./bin/mysqld_safe
(Enter your password, if necessary)
(Press Control-Z)
shell> bg
(Press Control-D or enter “exit” to exit the shell)

You should be able to connect to the MySQL server, for example, by
running `/usr/local/mysql/bin/mysql’.

10. Next, I added an alias for MySQL using bash so I could type “mysql” to get into the databases and “mysqladmin” to use the admin without having to CD to the full path

alias mysql=/usr/local/mysql/bin/mysql
alias mysqladmin=/usr/local/mysql/bin/mysqladmin

11. Voila — in! Now time to secure the MySQL database and enter in a root password

mysqladmin -u root password PASSWORD_HERE

Just change PASSWORD_HERE to the root password you want to use.

AJAX MyTop

TDavid — Tue, 31 Jan 2006 17:34:10 +0000

Man, how many clicks does it take to get the download these days at Sourceforge? Seems like it took me a half dozen to get to the AjaxMyTop project download.

MyTop creator Jeremy Zawodny writes:

Someone has built and AJAX powered version of mytop, the little console based MySQL monitoring tool I wrote years ago. I guess it’s now buzzword compliant.

mytop is a handy little program for monitoring MySQL queries that we’ve used in the past on a couple of our boxes so I decided to fire up this AJAX version and see how it fared. AjaxMyTop received 3.7 out of 5 rating at Ajaxian as of this writing.

Installation started at 8:38am PST. gunzip ajaxMyTop.tar.gz. tar -xvf ajaxMyTop.tar. Threw dom errors right away, documentation is non-existent. Error was result of PHP 5.x required for the program. Turns out Michael Kimsal hacked up processlist.php to work in PHP4. Here is the PHP 4 process.php source file you’ll need if you aren’t running PHP5. And no, I didn’t clean up the indenting. Total time spent on this project: 20 minutes.

Query results within last X days

TDavid — Wed, 05 Oct 2005 14:10:05 +0000

Sometimes it is necessary to query data from the last 7 days. Here’s how to create a dynamic query inside a script using PHP / MySQL to return a list of users who last visited within X number of days (7 by default):

$now = time(); // this is the current UNIX timestamp for the server
$days = 7; // change to number of days
$days_ago = date(“Y-m-d H:i:s”, ($now - (86400 * $days));
$query = “SELECT username FROM users WHERE lastvisited > ‘$days_ago’”;
$result = @mysql_query($query,$mysql_link);
if(@mysql_num_rows($result)) {
while($row = mysql_fetch_row($result)) {
print “$row[0]
”;
}
}
?>

Notes:
- $mysql_link contains the MySQL database connection link.
- 86400 is the number of seconds in a day: 60 seconds x 60 minutes x 24 hours = 86,400

Turck MMCache and PHP encoder

TDavid — Fri, 30 Sep 2005 13:59:20 +0000

I’m not sure how current or updated this is because I found some broken project links (all links below work) but these projects seem promising and worth closer inspection, especially if one is looking to make their PHP scripts run faster.

Turck MMcache:

… a free open source PHP accelerator, optimizer, encoder and dynamic content cache for PHP. It increases performance of PHP scripts by caching them in compiled state, so that the overhead of compiling is almost completely eliminated. Also it uses some optimizations to speed up execution of PHP scripts. Turck MMCache typically reduces server load and increases the speed of your PHP code by 1-10 times.

Jason Sheets created http://phpcoder.sourceforge.net/ - PHPCoder - which is a GUI front end to the Turck MMCache Encoder which allows encoding of PHP files and the following options: Expire scripts aftter a certain amount of time, restrict server IP, restrict server name and restrict visitor IP. PHP Coder is distributed under the BSD License.

Parsing names and numbers out of text

TDavid — Sat, 24 Sep 2005 04:51:28 +0000

At one of our sites we needed to parse out some names and numbers from a log file. The strings also contained comment text and the order would be mixed format. These types of regular expression parsing can be tricky.

Let’s take a look at the two possible formats of the strings:

FORMAT #1:
[00:02:18][jvastine]7.52..I agree with Rowdy, but they do have potential!

FORMAT #2:
[00:02:18][@Forser]My vote is 5

Can you see a pattern for extracting the name and numbers from the string? Let’s whip up the code to parse these two types of strings as a test:

$text = array(‘[00:02:18][jvastine]7.52..I agree with Rowdy, but they do have potential!’,
‘[00:02:18][@Forser]My vote is 5′
);
foreach($text as $string) {
print “

testing: “ . $string . ‘
’;
preg_match(“/\[([\@a-z]+)\]([a-z ]+([0-9\.]+)|([0-9\.]+))/i”,$string,$matched);
print “$matched[1]
”;
if($matched[3] != ”) {
print sprintf(“%02f”,$matched[3]);
} else {
print sprintf(“%02f”,$matched[2]);
}
// end for loop
}
?>

Note the use of the sprintf() to format the number because it might be a decimal. We can trim the decimal if it’s all zeroes, but in some cases we may want to include the decimal. Also as one of my smart tech friends pointed out a string that contains multiple numbers could screw this up.

FORMAT #3:
[00:02:18][jvastine]16 hot dogs…I vote is 7

Now how would we parse out the vote of 7 and ignore the 16? This one is a bit easier because we could analyze the numbers (by going to $match[4], $match[5], etc), since a valid rating is only 1-10 in the above example, but what if there was a format with multiple rating numbers?

FORMAT #4:
[00:02:18][jvastine]6 hot dogs…I vote is 7

How to determine which is the vote in this case? This is a trick question. And not as easy one. Thoughts?

Using header to redirect the browser

TDavid — Fri, 23 Sep 2005 02:16:31 +0000

The PHP header function allows redirection of the browser, among other cool things.

Example redirecting the browser to php-scripts.com homepage:

header(”Location: http://www.php-scripts.com/”);
?>

Using floor and time to calculate number of days elapsed from UNIX timestamp

TDavid — Wed, 21 Sep 2005 20:06:51 +0000

Finding out the number of days elapsed from a UNIX timestamp is actually pretty straightforward. If you only know two dates then first you’ll need to convert the date to a UNIX timestamps and then subtract the most recent timestamp from the older timestamp like this:

$old_timestamp = 1102971600;
$elapsed_seconds = time() - $old_timestamp;
print ‘Seconds elapsed since ‘ . date(“m-d-Y H:i:s”,$old_timestamp) . “: $elapsed_seconds”;
?>

Now, let’s convert those seconds to days using the floor() function, by just adding the following code to the code above:

/*
divide #seconds by 60 for minutes
divide #of minutes by 60 for hours
divide #of hours by 24 for days
use floor to get integer for day
*/
$elapsed_days = floor(($elapsed_seconds / 60) / 60 / 24);
print “
Number of days elapsed: $elapsed_days”;

How to use preg_replace to replace phrase between question marks

TDavid — Tue, 20 Sep 2005 18:03:52 +0000

$string = “?This is a test that should be in single quotes quotes?”;
$text = preg_replace(”/(\?([^\?]+)\?)/”,”‘\\2′”,$string);
?>

regular expression produces:

This is a test that should be in single quotes’

How to make an anniversary counter announcement script using ordinal numbers

TDavid — Mon, 19 Sep 2005 20:01:55 +0000

Today being it is our 16th wedding anniversary I decided it would be appropriate to build a small script to keep track and post a message automatically on our special day together. I wanted this program to remember what year of our anniversary it was without me having to remind it: a great use for a variable.

$anniversary_date = ‘0919′;
$start_year = 1989;
$the_suffix = ‘th’;
$number_years = (date(“Y”) - $start_year) . $the_suffix;
if(date(“md”) == $anniversary_date) {
print “Happy $number_years anniversary, Kara!”;
}
?>

Something worth noting is 16th, 17th, 18th, 19th and 20th will work with the $the_suffix … but what about 21st, 22nd, 23rd? Do we need to add filtering or does the date PHP function offer something to automatically provide this for us?

In fact it does! It’s called the ‘S’ suffix and works good as a date parameter for dealing with this situation. For example:

print “today is the “ . date(“dS”) . ‘of the month.’; // adds st, nd, rd, th
?>

This will output the proper 20th, 21st, 22nd, 23rd, 24th, etc format.

Now how can this be made to work on any number, not just a date because I’m optimistic that we’ll be together beyond 31 years. One solution is to create your own function, as robf did and posted to Zend in the way of an ordinal($number) function.

I remained curious, though if we could fake a date in years, and then strip the first part of the years off to cover any possible usage of anniversary numbers and not have to resort to using our own function? We can do this up until our 69th annivesary using mktime(), date and substr() functions using the following code:

$elapsed = date(“Y”) - $start_year + 2001; // add 2001
print “
Today ($elapsed) is our “ . substr(date(“YS”,mktime(0,0,0,0,0,$elapsed)),2,4) . ‘ anniversary.’; //
?>

Definitely not the most practical code on the planet, nor anything I’d ever use beyond just playing around aloud here, but I was trying to stretch my brain for other possible ways to do this using built-in PHP functions.

Have I missed a built-in PHP ordinal number function that works like the S suffix in date()?

I’m sure my wife would rather get flowers than flowery code. I better get on that!