PHP - I Can't Seem To Build A Pattern That Is Useable, Please Help!

Hey Guys. I am learning about the Enterprise pattern, and to me it seems like its the same as the MVC pattern (which I learned about) Do they work the same??   For those who know Martin Fowler's Patterns of Enterprise Application Structure, that is what I am referring to as the enterprise pattern
Edited by eldan88, 13 October 2014 - 10:24 AM.

(example I looked at: http://develturk.com/tags/selfinstance/)

I've looked into the singleton pattern and a few examples. I've understood most of its concept, but I still have a few things puzzling me. I noticed that you're not supposed to allow cloning (obviously) or the construction method as it shows in an example:


    //this object can not copy
    //except the getInstance() method.
    private function __clone() {}
   
    //prevent directly access
    //we want acces this only from getInstance method.
    private function __construct(){}


Do I also have to do this for child classes, or just the parent class?

This topic has been moved to PHP Regex.

http://www.phpfreaks.com/forums/index.php?topic=306005.0

I'm trying to preg_match $text for specific words, defined in an array.

$text = "PHP is a programming language of choice";
 

$text = "This is a function written in a programming language called PHP.";

$words = array("/java/", "/PHP/", "/html/");

for ($i = 0; $i < count($words); $i++)
{
   preg_match($words[$i], $text, $matches);
}
 

The problem with tis is that it returns 3 arrays, of which only the second one is a match, and the other 2 arrays are empty.
The result is that I get notice error on my echo page because the 1st and 3rd arrays are empty.

if I want the text to be searched for the first matching result, whether it is java, PHP or html, then stop (if possible) and echo/return the result, how will I do that? Perhaps preg_match is not to be used here but instead something like substr?

For example:
 

$text = preg_replace_callback( "/([@][a-zA-Z-0-9]+)/"    , "umentions", $text, 1); 

That 1 parameter means the maximum times it will iterate right? So If I'm doing:

@Nexus

@Cupcake

@George

it will return:




My problem is. I only want it to iterate over the last match in my function:
 

function umentions($matches){
vdump($matches);
    return "(here you would replace: ".$matches[0]." with something)";
}

How is it possible to use limit, and only iterate the last match not the first?
Edited by Monkuar, 22 January 2015 - 08:46 AM.

Hi all

I have this simple gd code to produce a filled rectangle with a solid color.

Code: [Select]
<?php
        
header('Content-Type: image/png');

$im = imagecreatetruecolor(1000, 200);

$gray = imagecolorallocate($im, 240, 240, 240);
imagefilledrectangle($im, 0, 0, 1000, 199, $gray);
    

imagepng($im);

imagedestroy($im);

?>

Is it possible to create a rectangle with a pattern such as a lined background.

I am trying to find the last word before a search pattern.  I tried preg_match without any luck.  I found something close online but it does a match for the first match for the pattern.

I know that I will always see , some # pressure.  I want that # right before the word pressure but there are a lot of , in the page.

Thanks in advance.

Code: [Select]
function get_string_between($string, $start, $end){
$string = " ".$string;
$ini = strpos($string,$start);
if ($ini == 0) return "";
$ini += strlen($start);
$len = strpos($string,$end,$ini) - $ini;
return substr($string,$ini,$len);
}

$fullstring = "today, Sat, 750 pressure";
$parsed = get_string_between($fullstring, ", ", "pressure");

GD Library Pattern Background ?

Hi all

I have a simple page here that uses the GD Library
to display text in a selected font and size etc.

http://www.ttmt.org.uk/forum/

At moment the stripped background goes from the code.
Is there a way to have an image as the background instead
of the stripped background.

PHP code

Code: [Select]
<?php
        
header('Content-Type: image/png');

$im = imagecreatetruecolor(900, 215);

$w = imagecolorallocate($im, 255, 255, 255);
$c = imagecolorallocate($im, 220, 220, 220);
$black = imagecolorallocatealpha($im, 0, 0, 0, 20);
$style = array($w,$w,$w,$c,$c,$c);
ImageSetStyle($im, $style);

ImageLine($image, 100, 0, 50, 50, IMG_COLOR_STYLED);
imagefilledrectangle($im, 0, 0, 900, 214, IMG_COLOR_STYLED);
    
  $text = $_GET['text'];
$textSize = $_GET['size'];
$font = $_GET['font'];
  
  imagefttext($im, $textSize, 0, 15, 165, $black, $font, $text);

imagepng($im);

imagedestroy($im);

?>

In the below example, we match 0 or more alphanumeric characters in the beginning and 0 or more alphanumeric characters in the end. Then we create 4 groups. Each group has "?=" which means "the next text must be like this". Now in first group we match any character 8 or more times. The next group we match 0 or more characters and a digit. In the next group we match 0 or more characters and a lowercase letter. In the next group we match 0 or more characters and an uppercase letter.

<?php
$password = "Fyfjk34sdfjfsjq7";

if (preg_match("/^.*(?=.{8,})(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).*$/", $password)) {
    echo "Your passwords is strong.";
} else {
    echo "Your password is weak.";
}
?>

My question is do these four groups impact each other? That is, the fact that the first group has 8 or more characters means that all the groups must have 8 or more characters. The fact that the second group has a digit means that all the groups must have a digit. Or do they work exclusively meaning that a 4 character word with a single digit would match this pattern, even though first group says it must have 8 characters.

Hello,   I have a file to display

$file_content = file_get_contents("test.php");

This file is encoded.... In this file there is a specific tag call change_me

<change_me> 
&quot;&lt;code&gt; &lt;strong&gt;Example Element&lt;/strong&gt; &lt;/code&gt;&quot;
 </change_me>

I want to use htmlspecialchars_decode function for <change_me> tag only... <change_me> tag is used two times in file.     Thanks
Edited by arunpatal, 10 July 2014 - 04:15 PM.

Hello   I hear alot of talk about reusing a database connection and attempts to solve this.   I came across this post on stackoverflow but am having difficulty understanding as to how this is any different than just creating a instance in a single file and including it via include, require or autoload wherever a db instance is needed.   The pattern talked about in the post is the factory pattern, it seems that the factory is responsible for creating the instance, something which I thought autoloading did without this additional code?   Another thing I am still confused by with all the reuse talk - If 2 seperate users request 2 different pages on our server(2nd user 0.1 second behind the other user) which both refer back to the same db file/factory, are 2 instances created? or is the previuos users instance somehow used aslong as there request has not finished? I thought that the server would make new fresh requests/variables/instantiation etc all over again for every user, perhaps I am wrong.   Thanks in advance.
Edited by RuleBritannia, 13 May 2014 - 05:15 PM.

 $pattern="/[+][0-9]+[^a-zA-Z*-+!|@#$%&*(){\/}]/"; //
 $subject="+3706*0805595";
 $ans=preg_match($pattern, $subject, $matches);
 print_r($matches);echo "ans=".$ans;

gives output

Array ( [0] => +3706 ) ans=1

Where is my mistake. How to formulate pattern which does not accept string which contains letters or special characters. String must start with +, contain digits.

This topic has been moved to Third Party PHP Scripts.

http://www.phpfreaks.com/forums/index.php?topic=347558.0

This topic has been moved to PHP Regex.

http://www.phpfreaks.com/forums/index.php?topic=322578.0

 
Hi Everyone,

I have just started using Simple HTML DOM today and I have spent 4 hours not getting what I want.

I want to be able to extract the following information:

Code: [Select]
<div class="listing_content">
<span class="serialNumb" style="line-height: 21px;">77777</span>
<br />
444 ASDF, Alpha, Tango, Beta
<br />
77777 Director:99999
              <div>
<img title='web' src='http://cpgimg.com/images/icon_sm_web.gif' alt='web'/>&nbsp;&nbsp;<a href='javascript:void(0)' onClick="window.open('/redir.jsp?p_url=http:%2f%2fwww.cnn.com&p_cid=2707304&p_hid=279E00&p_ct=3527&p_pr=KO&p_fr=U');" class='listing_link'>website</a>&nbsp;&nbsp;<img title='email' src='http://cpgimg.com/images/icon_sm_mail.gif' alt='email'/>&nbsp;&nbsp;<a class='listing_link' href="javascript:void(0)" onclick="popupEmail('/email.jsp?lang=0&p_cid=2707304');(new Image()).src='/redir.jsp?p_url=&p_cid=2707304&p_hid=279E00&p_ct=3527&p_pr=ON&p_fr=E&msec='+(new Date()).getMilliseconds()">E-mail</a>&nbsp;&nbsp;
               </div>
</div>                                  
The content I need to pull separately from above include:
1- serialNumb = 77777
2- 444 ASDF, Alpha, Tango, Beta
3- 77777 Director:99999
4- www.cnn.com

I want all the data to recorded to different variables so I can upload them to MySQL.

Any help with this is much appreciated. I don't have to use Simple DOM HTML but per my search it seems to be the best tool (however, I am not so lucky with it.)

***Not to forget that this page is full of <div>, <br />, <img>, and other tags. The quoted part is just one excerpt but this part is unique and used once in the page "style="line-height: 21px;". Also the "('/redir.jsp?p_url" is also unique for the URL portion.

Thanks again.