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Help needed with image width height and crop

Posted: Tue Jan 15, 2008 7:13 am
by theCro
Hello everyone i've been using this php code to resize image 'on the fly' and it really rocks!

here's the code:

Code: Select all

<?php
header ("Content-type: image/jpeg");
/*
JPEG / PNG Image Resizer
Parameters (passed via URL):
 
img = path / url of jpeg or png image file
 
percent = if this is defined, image is resized by it's
          value in percent (i.e. 50 to divide by 50 percent)
 
w = image width
 
h = image height
 
constrain = if this is parameter is passed and w and h are set
            to a size value then the size of the resulting image
            is constrained by whichever dimension is smaller
 
Requires the PHP GD Extension
 
Outputs the resulting image in JPEG Format
 
By: Michael John G. Lopez - http://www.sydel.net
Filename : imgsize.php
*/
 
$img = $_GET['img'];
$percent = $_GET['percent'];
$constrain = $_GET['constrain'];
$w = $_GET['w'];
$h = $_GET['h'];
 
// get image size of img
$x = @getimagesize($img);
// image width
$sw = $x[0];
// image height
$sh = $x[1];
 
if ($percent > 0) {
    // calculate resized height and width if percent is defined
    $percent = $percent * 0.01;
    $w = $sw * $percent;
    $h = $sh * $percent;
} else {
    if (isset ($w) AND !isset ($h)) {
        // autocompute height if only width is set
        $h = (100 / ($sw / $w)) * .01;
        $h = @round ($sh * $h);
    } elseif (isset ($h) AND !isset ($w)) {
        // autocompute width if only height is set
        $w = (100 / ($sh / $h)) * .01;
        $w = @round ($sw * $w);
    } elseif (isset ($h) AND isset ($w) AND isset ($constrain)) {
        // get the smaller resulting image dimension if both height
        // and width are set and $constrain is also set
        $hx = (100 / ($sw / $w)) * .01;
        $hx = @round ($sh * $hx);
 
        $wx = (100 / ($sh / $h)) * .01;
        $wx = @round ($sw * $wx);
 
        if ($hx < $h) {
            $h = (100 / ($sw / $w)) * .01;
            $h = @round ($sh * $h);
        } else {
            $w = (100 / ($sh / $h)) * .01;
            $w = @round ($sw * $w);
        }
    }
}
 
$im = @ImageCreateFromJPEG ($img) or // Read JPEG Image
$im = @ImageCreateFromPNG ($img) or // or PNG Image
$im = @ImageCreateFromGIF ($img) or // or GIF Image
$im = false; // If image is not JPEG, PNG, or GIF
 
if (!$im) {
    // We get errors from PHP's ImageCreate functions...
    // So let's echo back the contents of the actual image.
    readfile ($img);
} else {
    // Create the resized image destination
    $thumb = @ImageCreateTrueColor ($w, $h);
    // Copy from image source, resize it, and paste to image destination
    @ImageCopyResampled ($thumb, $im, 0, 0, 0, 0, $w, $h, $sw, $sh);
    // Output resized image
    @ImageJPEG ($thumb);
}
?>
[SAVE FILE AS 'imgsize.php']

BUT, i wanted to add new function so when, for example if the image is 600x500 and i want it to be 300x120 ... now it crops and STRETCHES the image and it's unproportional.. what i want is to make it proportional even if it's needed to cut the edges to fit the 300x120 pixels size... hopefully you understood what i wanted.. anyway the code for view image is

http://www.yourwebsite.com/imgsize.php? ... nghrv2.jpg

Re: Help needed with image width height and crop

Posted: Tue Jan 15, 2008 7:18 am
by VladSun
Resize proportionally and then use http://bg2.php.net/imagecopy to crop the image as desired.

Re: Help needed with image width height and crop

Posted: Tue Jan 15, 2008 7:36 am
by theCro
VladSun wrote:Resize proportionally and then use http://bg2.php.net/imagecopy to crop the image as desired.
i was thinking can this be done on thy fly... same as http://www.zadarsport.com/imgsize.php?w ... bicic2.jpg for example can i add some code to code posted above and then add something extra to http://www.zadarsport.com/imgsize.php?w ... bicic2.jpg so it does not stretch the image but cuts it...

a good example is http://www.index.hr/thumbnail.ashx?o=c& ... Z_IL_v.jpg

thanks and please help :)

Re: Help needed with image width height and crop

Posted: Tue Jan 15, 2008 6:07 pm
by theCro
i still havent finished this please anyone help i'm begging now!!! :)

:banghead:

Re: Help needed with image width height and crop

Posted: Tue Jan 15, 2008 6:22 pm
by VladSun
Post you code attempt and we will help ...

Re: Help needed with image width height and crop

Posted: Tue Jan 15, 2008 6:23 pm
by theCro
VladSun wrote:Post you code attempt and we will help ...
i'm total newbie ... i do it for my son and his football team website.. if you can please try to help us we would appreciate it alot! Thanks in advance and please give us a hand. :cry:

Re: Help needed with image width height and crop

Posted: Tue Jan 15, 2008 6:28 pm
by theCro
to return you favor if you can help us we can create some logos and graphics things for you.
fair enough? 8)