2 Questions

[Corey 0]

i have 2 questions about PHP...please don't answer like "use google"...or something...because i tried and didn't find anything..so1.example..i have a varible called $var and it contains 50 characters..so how can i write only part of them (1,2,3,20)?2.example like the one before... i have a varible called $var with 50 characters..how can i write the first /second /third.. charachter from the $vartnx;)

[OpaQue 15]

The substr function of PHP will allow you to get part of the variable.The access particular characters, you will have to use a Curly braces.Suppose, you have $var="tommy";So, $var{1} will give you "o" as output. This is a rough idea since I haven't used this function for a long time.However, you can search for substr directly now :-) instead of searching everything.

[Tyssen 0]

You can also specify the number of characters and count from the begining or end of the string. PHP.net has some good examples of how that works.

But I think you can only use substr if the characters run in succession, e.g. 1-3, 4-8 etc. If you want to extract characters at random e.g. 1,3,7,9,12, you might have to create an array of different characters and work with that instead.

[OpaQue 15]

An Array of diffrent characters is not needed. Strings are stored as arrays internally. All you have to do is access the diffrent characters using the following syntax,$variable_name{index};index will be the character postion from 0. Try it out :-).

[Mike 0]

Like OpaQue said, you would use the substr() function. The only thing that I am not sure about in what OpaQue posted, is the $variable{n}. Unless that is another way to use the substr function, quickly of course. Basically the substr() function works like substr($variable, nlettertostartat);

 

<?php$string = 'Testing';$substr = substr($string,3);echo $substr; // Result: 'ting'?>

Actually, if you want to just get a certain character/characters, do what OpaQue said. $variable{n characetr [1,2,3,4,etc]}.

[Tyssen 0]

Sorry, I was thinking about a single function to extract a set of characters rather than a series concatenated together.

[Corey 0]

tnx everyone ..btw..do you know some simple script that can write the content of some folder..example- Downloads -1.rar -3.rar -5.jpg...

[Tyssen 0]

Here's a stripped down version of one I use on a site I'm developing for a friend:

if ($handle = opendir($PathtoYourDirectory)) {          while (false !== ($file =     	readdir($handle))) {              if ($file != "." && $file != "..") {                  $file_array[] = $file;              }          }      }           closedir($handle);      $result=array_unique($file_array);      natcasesort($result);      reset($file_array);      foreach($result as $file){  	echo $file."<br />";  	}    unset($file_array);