[SOLVED] Getting a Part of a string?

[Lamez]

ok so I am working on my avatar system, and it encrypts the name, then it add the username with a hyphen at the end.

 

Well that is not the problem I stored it in the database with a path, like this: user/userava/fc60f5d7abc2e080599bb6dc465db54d-JamesLittle.jpg, I was wondering how do I take out the user/userava/ so I just have fc60f5d7abc2e080599bb6dc465db54d-JamesLittle.jpg?

 

-Thanks Guys!

[akitchin]

have a look at strrchr(), using '/' as the delimiter.  keep in mind that the return from strrchr() will contain the delimiter, so you'll need to substr() to remove the first character.

 

the manual should have the details you need to get it up and running.

[Lamez]

wait, so I will need to use substr() first, then strchr()?

[akitchin]

no, you'll want to use strrchr() first to strip the last portion off of the string.  then use substr() to get rid of that starting forward slash.

[Lamez]

ok, I am going to make a sandwich, and then I will get started on it.

 

Thanks for pointing me in the right direction, also I will want to delete the image later on, do I use unlink() or imagedestory()?

[akitchin]

unlink().  imagedestroy(), as it says in the manual, destroys any memory associated with an image.  that implies (and it says in the manual) that this is for use with dynamically created images.

[Lamez]

well see that is what I am asking, I did read the manual, but is unlink the best one?

 

[akitchin]

unlink is the only one.  imagedestroy() is only for use with dynamically-created images, the likes of which are generated by the built-in image functions in PHP.  assuming your avatars are uploaded (which i believe is a safe assumption) means that unlink() must be used to nix them off of the filesystem.

[Lamez]

Oh thank you. I understand that now.

 

Now back to the main topic, I did use strchar, and I get a output like: /fc60f5d7abc2e080599bb6dc465db54d-JamesLittle.jpg

Then I read the manual on substr, like you said, and it was talking about removing parts of the string, but from the example, it looks like you have to know how long the string is, but I don't know how long it is, it can change depending on the username and other randoms.

 

<?php
        $q = mysql_query("SELECT * FROM `users` WHERE `username` = '".$user_."'");
        $qimg = mysql_fetch_array($q);
  $qimg = $qimg['avatar'];
  echo $qimg;
  echo "<br>";
  $out = strrchr($qimg, "/");
  echo $out;
?>

[akitchin]

you don't need to know how long the string is, as you can simply specify a starting point and chopping length:

 

echo substr('abcdef', 1);     // bcdef

 

that chops off the first character and returns the rest.

[Lamez]

oh I get it! Let me see!

[Lamez]

Thank You! You are very helpful!

 

Final code:

    
<?php    
        $q = mysql_query("SELECT * FROM `users` WHERE `username` = '".$user_."'");
        $qimg = mysql_fetch_array($q);
  $qimg = $qimg['avatar'];
  echo $qimg;
  echo "<br>";
  $out = substr(strrchr($qimg, "/"), 1);
  echo $out;
?>