[SOLVED] Need help with simple cropping in php . . .

[Styles2304]

I'm trying to crop the image: http://l.yimg.com/us.yimg.com/i/us/nws/weather/gr/33n.png down to 177 by 120. I would just do this in photoshop but the image changes (it's not always 33n.png) but always has the same dimensions and is always a png with transparency. I've tried a few of the functions but either couldn't get them to work or they just didn't function as promised. I've also searched these forums and the php manual and this just isn't something I can figure out on my own.

 

If it's a simple script, I would VERY much appreciate it if someone could write it out for me with just a few notes so that I can learn.

 

Thank You,

Styles

[Styles2304]

/bump

[.josh]

by crop do you mean snip the picture down to 177x120 or do you mean scale it down to 177x120?

 

crop means to ch

op it down.

 

scale means to make it smaller.

[Styles2304]

I definitely mean crop as in to chop it down. I need to remove a substantial part of the lower right of the picture. Take a look at the link and you'll see what I mean . . . it's just transparent nothing . . . I just want the actual weather image.

[dannyb785]

I just came across some code on php.net that works perfectly as I need it to. Here it is..

 

<?php
// Max height and width
$max_width = 100;
$max_height = 100;

// Path to your jpeg

$upfile '/path/to/file.jpg';
    Header("Content-type: image/jpeg");
   
    $size = GetImageSize($upfile); // Read the size
          $width = $size[0];
          $height = $size[1];
         
          // Proportionally resize the image to the
          // max sizes specified above
         
          $x_ratio = $max_width / $width;
          $y_ratio = $max_height / $height;

          if( ($width <= $max_width) && ($height <= $max_height) )
          {
               $tn_width = $width;
               $tn_height = $height;
          }
          elseif (($x_ratio * $height) < $max_height)
          {
               $tn_height = ceil($x_ratio * $height);
               $tn_width = $max_width;
          }
          else
          {
               $tn_width = ceil($y_ratio * $width);
               $tn_height = $max_height;
          }
     // Increase memory limit to support larger files
    
     ini_set('memory_limit', '32M');
    
     // Create the new image!
     $src = ImageCreateFromJpeg($upfile);
     $dst = ImageCreateTrueColor($tn_width, $tn_height);
     ImageCopyResized($dst, $src, 0, 0, 0, 0, $tn_width, $tn_height, $width, $height);
     ImageJpeg($dst);
// Destroy the images
ImageDestroy($src);
ImageDestroy($dst);
?>
mail at soylentgreens dot com
30-Mar-2005 06:37
How about this for cropping images...

<?php

$imgfile = "img.jpg";
$cropStartX = 300;
$cropStartY = 250;
$cropW   = 200;
$cropH   = 200;

// Create two images
$origimg = imagecreatefromjpeg($imgfile);
$cropimg = imagecreatetruecolor($cropW,$cropH);

// Get the original size
list($width, $height) = getimagesize($imgfile);

// Crop
imagecopyresized($cropimg, $origimg, 0, 0, $cropStartX, $cropStartY, $width, $height, $width, $height);

// TODO: write code to save new image
// or, just display it like this:
header("Content-type: image/jpeg");
imagejpeg($cropimg);

// destroy the images
imagedestroy($cropimg);
imagedestroy($origimg);

?>

 

You'd just need to modify some of the values to do what you need to do. It works perfectly for me

[Jabop]

http://www.php.net/gd

 

You are going to have to do some research on GD's functions.

[discomatt]

You're far better off finding ( stealing ) all of the weather images and doing it once, manually. Doing this on the fly makes no sense.

[Styles2304]

discomatt . . . I'm ashamed of myself lol. I suppose that's the most effective way since it's done once and for all.

[dannyb785]

wtf? the script I gave will do what you need perfectly. You don't have to manually do them all