[GD] Verkleinen

Hey,

Weet iemand een scriptje die met GD resized, zonder dat er pixels verloren gaan?

Groet,

Erik.

Moet je helaas teleurstellen: Pixels gaan altijd verloren. Ik zal zo even een script posten dat ik +-2 maanden geleden heb geschreven.

Ja dat weet ik, maar als je het met width en height doet bij de IMG tag, dan zie je helemaal niet meer hoe die er oorspronkelijk uitzag.

Hier is mn script:

[COLOR= #0000BB]<?php[/COLOR]
[URL="http://www.php.net/ob_start"]ob_start[/URL][COLOR= #007700]();[/COLOR]
[URL="http://www.php.net/error_reporting"]error_reporting[/URL][COLOR= #007700]([/COLOR]E_ALL [COLOR= #007700]|[/COLOR] E_STRICT[COLOR= #007700]);[/COLOR]

[COLOR= #FF8000]/**
 * @author LorenzPHP
 * @copyright 2009
 */

/**
 * Zet alle GETS
 */[/COLOR]
 
 [COLOR= #0000BB]$source[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]$_GET[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]url[/COLOR][COLOR= #007700]];[/COLOR]
 [COLOR= #0000BB]$resize[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]$_GET[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]resize[/COLOR][COLOR= #007700]];[/COLOR]

[URL="http://www.php.net/if"]if[/URL] [COLOR= #007700]([/COLOR][URL="http://www.php.net/empty"]empty[/URL][COLOR= #007700]([/COLOR][COLOR= #0000BB]$source[/COLOR][COLOR= #007700]) ||[/COLOR] [URL="http://www.php.net/empty"]empty[/URL][COLOR= #007700]([/COLOR][COLOR= #0000BB]$resize[/COLOR][COLOR= #007700]))[/COLOR] [URL="http://www.php.net/die"]die[/URL][COLOR= #007700]([/COLOR][COLOR= #DD0000]"Please use the GET methode url and resize"[/COLOR][COLOR= #007700]);[/COLOR]

[COLOR= #FF8000]/**
 * Pak headers van plaatje, zoek het content-type op en sla het op in een variabeel.
 */[/COLOR]
 
 [COLOR= #0000BB]$get[/COLOR] [COLOR= #007700]=[/COLOR] get_headers[COLOR= #007700]([/COLOR][COLOR= #0000BB]$source[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]1[/COLOR][COLOR= #007700]);[/COLOR]
 [COLOR= #0000BB]$type[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]$get[/COLOR][COLOR= #007700][[/COLOR][COLOR= #DD0000]Content-Type[/COLOR][COLOR= #007700]];[/COLOR]
 
 [URL="http://www.php.net/header"]header[/URL][COLOR= #007700]([/COLOR][COLOR= #DD0000]Content-type: $type[/COLOR][COLOR= #007700]);[/COLOR] 
 
[COLOR= #FF8000]/**
 * Pak hoogte en breedte en zet in variabeel
 */[/COLOR]
 
 [COLOR= #0000BB]$imagesize[/COLOR] [COLOR= #007700]=[/COLOR] [URL="http://www.php.net/getimagesize"]getimagesize[/URL][COLOR= #007700]([/COLOR][COLOR= #0000BB]$source[/COLOR][COLOR= #007700]);[/COLOR]
 
 [COLOR= #0000BB]$height[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]$imagesize[/COLOR][COLOR= #007700][[/COLOR][COLOR= #0000BB]1[/COLOR][COLOR= #007700]];[/COLOR]
 [COLOR= #0000BB]$width[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]$imagesize[/COLOR][COLOR= #007700][[/COLOR][COLOR= #0000BB]0[/COLOR][COLOR= #007700]];[/COLOR]
 
 [COLOR= #FF8000]/**
 * Nieuwe hoogte instellen en breedte instellen
 */[/COLOR]

     
     [COLOR= #0000BB]$ex[/COLOR] [COLOR= #007700]=[/COLOR] [URL="http://www.php.net/explode"]explode[/URL][COLOR= #007700]([/COLOR][COLOR= #DD0000]x[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]$resize[/COLOR][COLOR= #007700]);[/COLOR]
          [COLOR= #0000BB]$newwidth[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]$ex[/COLOR][COLOR= #007700][[/COLOR][COLOR= #0000BB]0[/COLOR][COLOR= #007700]];[/COLOR]
         [COLOR= #0000BB]$newheight[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]$ex[/COLOR][COLOR= #007700][[/COLOR][COLOR= #0000BB]1[/COLOR][COLOR= #007700]];[/COLOR]
    
    
 [COLOR= #FF8000]/**
 * PHP Gezeik met al die imagecreate-functies
 */[/COLOR]
 
 [URL="http://www.php.net/if"]if[/URL] [COLOR= #007700]([/COLOR][COLOR= #0000BB]$type[/COLOR] [COLOR= #007700]==[/COLOR] [COLOR= #DD0000]image/jpeg[/COLOR] [COLOR= #007700]||[/COLOR] [COLOR= #0000BB]$type[/COLOR] [COLOR= #007700]==[/COLOR] [COLOR= #DD0000]image/jpg[/COLOR][COLOR= #007700])
 {[/COLOR]
 [COLOR= #0000BB]$imagecreate[/COLOR] [COLOR= #007700]=[/COLOR]    imagecreatefromjpeg[COLOR= #007700]([/COLOR][COLOR= #0000BB]$source[/COLOR][COLOR= #007700]);
 }[/COLOR]
 [URL="http://www.php.net/else"]else[/URL] [URL="http://www.php.net/if"]if[/URL]  [COLOR= #007700]([/COLOR] [COLOR= #0000BB]$type[/COLOR] [COLOR= #007700]==[/COLOR] [COLOR= #DD0000]image/png[/COLOR] [COLOR= #007700])
 {[/COLOR]
 [COLOR= #0000BB]$imagecreate[/COLOR] [COLOR= #007700]=[/COLOR]    imagecreatefrompng[COLOR= #007700]([/COLOR][COLOR= #0000BB]$source[/COLOR][COLOR= #007700]);
 }[/COLOR]
 [URL="http://www.php.net/else"]else[/URL] [URL="http://www.php.net/if"]if[/URL] [COLOR= #007700]([/COLOR] [COLOR= #0000BB]$type[/COLOR] [COLOR= #007700]==[/COLOR] [COLOR= #DD0000]image/gif[/COLOR] [COLOR= #007700])
 {[/COLOR]
 [COLOR= #0000BB]$imagecreate[/COLOR] [COLOR= #007700]=[/COLOR]    imagecreatefromgif[COLOR= #007700]([/COLOR][COLOR= #0000BB]$source[/COLOR][COLOR= #007700]);
 }[/COLOR]
 
  [COLOR= #FF8000]/**
 * Maak het nieuwe plaatje en zet hem op transparant
 */[/COLOR]
 
     [COLOR= #0000BB]$newimage[/COLOR] [COLOR= #007700]=[/COLOR] imagecreatetruecolor[COLOR= #007700]([/COLOR][COLOR= #0000BB]$newwidth[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]$newheight[/COLOR][COLOR= #007700]);[/COLOR]
     imagealphablending[COLOR= #007700]([/COLOR][COLOR= #0000BB]$newimage[/COLOR][COLOR= #007700],[/COLOR] false[COLOR= #007700]);[/COLOR]
     imagesavealpha[COLOR= #007700]([/COLOR][COLOR= #0000BB]$newimage[/COLOR][COLOR= #007700],[/COLOR]true[COLOR= #007700]);[/COLOR]



  [COLOR= #FF8000]/**
 * Maak het nieuwe plaatje
 */[/COLOR]
 
  imagecopyresampled[COLOR= #007700]([/COLOR][COLOR= #0000BB]$newimage[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]$imagecreate[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]0[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]0[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]0[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]0[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]$newwidth[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]$newheight[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]$width[/COLOR][COLOR= #007700],[/COLOR] [COLOR= #0000BB]$height[/COLOR][COLOR= #007700]);[/COLOR]
  
  [COLOR= #FF8000]/**
 * Zelfde zooi
 */[/COLOR]
 
 [URL="http://www.php.net/if"]if[/URL] [COLOR= #007700]([/COLOR][COLOR= #0000BB]$type[/COLOR] [COLOR= #007700]==[/COLOR] [COLOR= #DD0000]image/jpeg[/COLOR] [COLOR= #007700]||[/COLOR] [COLOR= #0000BB]$type[/COLOR] [COLOR= #007700]==[/COLOR] [COLOR= #DD0000]image/jpg[/COLOR][COLOR= #007700])
 {[/COLOR]
    imagejpeg[COLOR= #007700]([/COLOR][COLOR= #0000BB]$newimage[/COLOR][COLOR= #007700]);
 }[/COLOR]
 [URL="http://www.php.net/else"]else[/URL] [URL="http://www.php.net/if"]if[/URL]  [COLOR= #007700]([/COLOR] [COLOR= #0000BB]$type[/COLOR] [COLOR= #007700]==[/COLOR] [COLOR= #DD0000]image/png[/COLOR] [COLOR= #007700])
 {[/COLOR]
    imagepng[COLOR= #007700]([/COLOR][COLOR= #0000BB]$newimage[/COLOR][COLOR= #007700]);
 }[/COLOR]
 [URL="http://www.php.net/else"]else[/URL] [URL="http://www.php.net/if"]if[/URL] [COLOR= #007700]([/COLOR] [COLOR= #0000BB]$type[/COLOR] [COLOR= #007700]==[/COLOR] [COLOR= #DD0000]image/gif[/COLOR] [COLOR= #007700])
 {[/COLOR]
     imagegif[COLOR= #007700]([/COLOR][COLOR= #0000BB]$newimage[/COLOR][COLOR= #007700]);
 }[/COLOR]
 
   [COLOR= #FF8000]/**
 * Buffers cleanen
 */[/COLOR]
     imagedestroy[COLOR= #007700]([/COLOR][COLOR= #0000BB]$imagesize[/COLOR][COLOR= #007700]);[/COLOR]
    imagedestroy[COLOR= #007700]([/COLOR][COLOR= #0000BB]$imagecreate[/COLOR][COLOR= #007700]);[/COLOR] 
    
 [COLOR= #FF8000]/**
 * Einde script
 */[/COLOR]
 
[URL="http://www.php.net/ob_end_flush"]ob_end_flush[/URL][COLOR= #007700]();[/COLOR]
?>

Werking: WEBSITELINK.EXTENTIE/resize.php?url=URLVANPLAATJE&resize=NIEUWEHOOGTExNIEUWEBREEDTE

Bedankt, en hoef je dan geen IMG tags meer te gebruiken?

Erik schreef:

Bedankt, en hoef je dan geen IMG tags meer te gebruiken?

Nop. Werking staat in de post boven mij. Voorbeeld:

Resize.php: http://lorenzo.dekamps.info/scripts/resize/resize.php
Resize.phps: http://lorenzo.dekamps.info/scripts/resize/resize.phps

Hij resized nu, alleen hij weergeeft alleen de link:
.(gegevens($row[lid_id], avatar) == 1 ? $link.resize?url=.$link.img/avatars/.strtolower(gegevens($row[lid_id], gebruikersnaam))...gegevens($row[lid_id], extensie).&resize=100x100 : Afbeelding niet beschikbaarDe oorspronkelijke afbeelding of link ontbreekt.).
Hoe kan ik dat oplossen?

toch image-tags gebruiken

Daar moet je wel IMG-tags omheen zetten, maar je hoeft hem niet te resizen IN de img-tags (height="blabla"), want dat doet het script al (resize=hxw)

Oke, bedankt!

Asjeblieft, als je nog vragen hebt hoor ik het