Cropping an Uploaded Image

[avario]

I have a script that uploads an image using a form. It creates a preview version of image (width of 500px) and a thumbnail version of the image (width of 100px). But I want all of the thumbnails created be the script to be square, but not distorted, so I need to scale the image so that it maximum dimension is 100 (which I can do) but then I need to crop the other dimension to 100 to make it square (which I can't do). mean?

 

Does anyone know a script that I can add to my upload script that will crop the image?

 

Any help is much appreciated, Thanks.

 

This is my upload script if it helps:

$imagename = $_FILES['new_image']['name'];
$source = $_FILES['new_image']['tmp_name'];
$target = "Images/Photos/".$imagename;
move_uploaded_file($source, $target);

$imagepath = $imagename;
$save = "Images/Photos/Previews/" . $imagepath; //This is the new file you saving
$file = "Images/Photos/" . $imagepath; //This is the original file

list($width, $height) = getimagesize($file) ; 

$modwidth = 500; 

$diff = $width / $modwidth;

$modheight = $height / $diff; 
$tn = imagecreatetruecolor($modwidth, $modheight) ; 
$image = imagecreatefromjpeg($file) ; 
imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ; 

imagejpeg($tn, $save, 100) ; 

$save = "Images/Photos/Thumbnails/" . $imagepath; //This is the new file you saving
$file = "Images/Photos/" . $imagepath; //This is the original file

list($width, $height) = getimagesize($file) ; 

$modwidth = 100; 

$diff = $width / $modwidth;

$modheight = $height / $diff; 
$tn = imagecreatetruecolor($modwidth, $modheight) ; 
$image = imagecreatefromjpeg($file) ; 
imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ; 

imagejpeg($tn, $save, 100) ; 

[Kieran Menor]

I created this function at some point. It may be of use.

 

<?php

function createThumbnail($src_file, $dst_file, $dst_width, $dst_height, $dst_quality = 75) {
if(!file_exists($src_file)) {
	// Source file does not exist
	return false;
}
if(file_exists($dst_file)) {
	// Destination file already exists
	return false;
}
if(!is_writable(dirname($dst_file))) {
	// Destinaton directory is not writable
	return false;
}

list($src_width, $src_height, $src_type) = getimagesize($src_file);

switch($src_type) {
	case IMAGETYPE_GIF:
		$src_image = imagecreatefromgif($src_file);
		break;
	case IMAGETYPE_JPEG:
		$src_image = imagecreatefromjpeg($src_file);
		break;
	case IMAGETYPE_PNG:
		$src_image = imagecreatefrompng($src_file);
		break;
	default:
		// Unsupported image type
		return false;
}

$dst_image = imagecreatetruecolor($dst_width, $dst_height);

if($src_width > $src_height) {
	$x_offset = floor( ( $src_width - $src_height ) / 2 );
	imagecopyresampled($dst_image, $src_image, 0, 0, $x_offset, 0, $dst_width, $dst_height, $src_height, $src_height);
}
elseif($src_width < $src_height) {
	$y_offset = floor( ( $src_height - $src_width ) / 2 );
	imagecopyresampled($dst_image, $src_image, 0, 0, 0, $y_offset, $dst_width, $dst_height, $src_width, $src_width);
}
else {
	imagecopyresampled($dst_image, $src_image, 0, 0, 0, 0, $dst_width, $dst_height, $src_width, $src_height);
}

imagejpeg($dst_image, $dst_file, $dst_quality);

imagedestroy($src_image);
imagedestroy($dst_image);

return true;
}

?>

[avario]

Thank you so much Boom.dk. The script is just what I was looking for and worked perfectly. Thank you.