Jump to content

Help needed with image width height and crop


theCro

Recommended Posts

Hello everyone i've been using this php code to resize image 'on the fly' and it really rocks!

 

here's the code:

 

<?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 - 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?w=200&h=100&img=foto/enghrv2.jpg

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.