Latest PHP recipes

print qrcode to usb termal RP80 printer from web base app (PHP)

2014-09-09T09:35:32-07:00

PHP recipe 578930 by imam ferianto (php, printing, qrcode).

this script will print qrcode from php script. the printer is attached on webserver usb port, see my other article here: http://code.activestate.com/recipes/578925-print-directly-from-web-application-to-poseps-ther/

and python escpos references: https://code.google.com/p/python-escpos/wiki/Usage

Print Directly from web application to POS/EPS thermal printer (PHP)

2014-09-01T14:55:56-07:00

PHP recipe 578925 by imam ferianto (kasir, network, over, php, pos, printer, tiketing). Revision 2.

this php script will printout barcode label directly from the web by phpscript

Detect what browser your website is being accessed from using php (PHP)

2013-06-19T20:09:55-07:00

PHP recipe 578571 by Captain DeadBones (browser, php, server).

This is a short hack on how to figure out what OS you site is being accessed from. This is useful if you want to redirect to different versions of your site through php.

php backwards compatibility porting tips (PHP)

2013-02-10T00:40:26-08:00

PHP recipe 578452 by imam ferianto (backwards, compatibility, old, php4, php5).

Hello again, on december 2012, I was porting my old php code (php4) to new php 5.4.3. There are to many errors within code, especially for session, eregi, global variables and others. This some pieces step for compatibility porting:

add global variable definiton on some function that need outside variable <code> function getuser(){ global $loginid,$password; } </code>
replace eregi(/find/,str) with preg_match(//,str)
add function exists for function that not exists in php5.4.3. for example: <code> if(!function_exists("session_is_registered")){ function session_is_registered($var){ return isset($_SESSION[$var]); } } if(!function_exists("session_register")){ function session_register($var){ $_SESSION[$var]=$_GLOBALS[$var]; } } </code>

Ok there is my tips, how about you?

Benchmark (PHP)

2015-06-26T04:30:14-07:00

PHP recipe 578235 by Roger Mbiama Assogo (perl, ppi, scripts, vim). Revision 6.

perl [ -sTtuUWX ] [ -hv ] [ -V[:configvar] ] [ -cw ] [ -d[t][:debugger] ] [ -D[number/list] ] [ -pna ] [ -Fpattern ] [ -l[octal] ] [ -0[octal/hexadecimal] ] [ -Idir ] [ -m[-]module ] [ -M[-]'module...' ] [ -f ] [ -C [number/list] ] [ -S ] [ -x[dir] ] [ -i[extension] ] [ [-e|-E] 'command' ] [ -- ] [ programfile ] [ argument ] [stap -L 'kernel.trace("*")'|sort] [feature]... BEGIN { my $b__dir = (-d '/home/angosson/perl'?'/var/www/cgi-bin/perl':( getpwuid($>) )[7].'/perl');

unshift @INC,$b__dir.'5/lib/perl5',$b__dir.'5/lib/perl5/x86_64-linux-thread-multi',map { $b__dir . $_ } @INC;

} require LWP::UserAgent;

my $ua = LWP::UserAgent->new; $ua->timeout(10); $ua->env_proxy;

Web based Query Browser (PHP)

2011-06-15T03:54:02-07:00

PHP recipe 577753 by Jonathan Fenech (based, browser, php, query, web).

Query browser works

add password to this part of the code if you require a password for mysql

Code =

// Connect to the database $conn = mysql_connect('localhost', 'root' 'PASSWORD GOES HERE");

YouTube-like primary key generation (PHP)

2011-02-24T21:43:55-08:00

PHP recipe 577571 by Slava Yanson (activerecord, database, php, unique). Revision 4.

If you have more then 1 primary database servers - you have probably experienced the pain of primary key overlapping... Here is a super simple solution that will generate a hash of random letters and numbers.

Included is a sample ActiveRecord class (MyTable.php).

Validating Emails (PHP)

2011-06-13T15:10:47-07:00

PHP recipe 577198 by Jonathan Fenech (emails, validating). Revision 2.

a small script that can be used for Validating Emails on

Login pages
forums

changed to preg_match from eregi function. now scripted validates everything typed in input boxes

Old Code =

       foreach($Email as $Emails)
   { // checks Emails - .net , .com , .au  & etc
   if(eregi("[a-zA-Z0-9]@+[a-z].{1,}com$",trim($Emails))|| eregi(            
       "[a-zA-Z0-9]@+[a-z].{1,}net$",trim($Emails)))

New Code =

       foreach($Email as $Emails)
   { // checks Emails - .net , .com , .au  & etc
   if(!preg_match("/^[_\.0-9a-zA-Z-]+@([0-9a-zA-Z]
   [0-9a-zA-Z-]+\.)+[a-zA-Z]{2,6}$/i", $Emails))

i changed from eregi function to preg_match function because eregi was taking out of PHP version 5.3.0 and 5.3.5.

PHP 'Struct' port (PHP)

2010-03-28T01:22:31-07:00

PHP recipe 577160 by Jeff Griffiths (iterator, iterators, oop). Revision 2.

In Ruby, the Struct class is a convenient way to create a hash-like object on the fly and use it for your nefarious purposes. PHP 5+ can be convinced to do this type of things as well, it just doesn't have it out of the box. Here is a simple class that implements iterator and allows you to populate the internal data structure similar to how Ruby's Struct works. Syntactic sugar? Probably.

Note: I haven't bothered to implement the Ruby Struct API per se, Instead I just got something similar by implementing the Iterator interface and keeping things very PHP-like.

Generate an alpha-numeric password salt (PHP)

2010-02-25T14:07:08-08:00

PHP recipe 577071 by Jayesh Sheth (md5, password, random_number, salt).

Generate an alpha-numeric password salt (with a default of 32 characters)

Generate a salt (PHP)

2012-07-10T19:52:17-07:00

PHP recipe 576894 by Xavier L. (crypt, generation, generator, hash, pass, password, salt, secure, security, string). Revision 6.

This function will generate a salt for use with passwords ranging using characters in range a to z, A to Z, 0 to 9 and !@#$%&?. The characters are sorted in a random value and can appear more than one time in the string. This way, this function is more powerful than the *shuffle() function. This means that the salt could also be longer than the character list.

Hash text simply (PHP)

2012-04-30T21:43:00-07:00

PHP recipe 576893 by Xavier L. (crypt, extensible, generator, hash, php, secure, security, simple). Revision 5.

This is a simply and extensible script that can be used to rapidly has any amount of text using PHP's hash() built-in function.

It recognizes when the page is loaded for the first time and displays a form with options. Afterward, it display the selected hash(es), with a link at the bottom to start again.

PHP Login page (PHP)

2010-04-17T13:31:03-07:00

PHP recipe 576680 by Jonathan Fenech (login, page). Revision 2.

this is a small php login script.

PHP - Background Colour Changer (PHP)

2009-03-05T05:22:31-08:00

PHP recipe 576679 by Jonathan Fenech (background, changer, colour). Revision 2.

this is a script that changes the colour of the background to the day of the week, the code uses if and elseif...

a more reliable DOCUMENT_ROOT (PHP)

2008-12-25T18:55:33-08:00

PHP recipe 576595 by Gui R (web).

$_SERVER['DOCUMENT_ROOT'] has been known to be broken on some servers. This is a bit of logic to retrieve the document root more reliably.

Youtube Downloader (PHP)

2008-12-03T17:37:28-08:00

PHP recipe 576579 by yeni setiawan (download, php, youtube, youtube_downloader).

This is a series of function that you can use to download video(s) from Youtube.com

Converting MySQL queries to XML (PHP)

2008-09-11T13:16:40-07:00

PHP recipe 576499 by sameer borate (mysql, php, xml).

Converting MySQL queries to XML

Implementation of a single linked list in PHP (PHP)

2008-09-11T12:44:41-07:00

PHP recipe 576498 by sameer borate (linked_list, php).

Implementation of a single linked list in PHP with Unit Test

SPICE for PHP (PHP)

2008-04-30T17:30:49-07:00

PHP recipe 572178 by Stephen Chappell (security).

SPICE has been in development since 2002. The first version was implemented on a graphing calculator, designed to work with base 27 numbers, and used hard coded keys. The program was ported to Java and later redesigned in Python. This implementation was ported directly from the standard code base.

Bass class for PDO abstraction (PHP)

2010-03-28T01:16:30-07:00

PHP recipe 522993 by Jeff Griffiths (database). Revision 2.

This is a simple base class that extends PDO and provides some useful helper functions such as _getRows and _getAsRow()