admin-editprofile-square-crop.php

<?php
// square cropping logic on lines 56-70

// header has the authentication, DB connection and doctype!
require('admin-header.php'); 

//begin upload parser
if($_POST['did_upload']){
	//the folder where uploads will be saved
	$upload_directory = '../uploads';
	//what sizes do we need to generate?
	$sizes = array(
		'thumbnail' => 150,
		'medium' 	=> 300, 
		);
	//get the uploaded file
	$uploadedfile = $_FILES['uploadedfile']['tmp_name'];

	if($uploadedfile){
		//validate: make sure this is an image
		list( $width, $height ) = getimagesize($uploadedfile);
	}

	
	if( $width > 0 AND $height > 0 ){
		//what type of image is it?
		$filetype = $_FILES['uploadedfile']['type'];


		switch($filetype){
			case 'image/gif':
			$source = imagecreatefromgif($uploadedfile);
			break;
			
			case 'image/jpg':
			case 'image/jpeg':
			case 'image/pjpeg':
			$source = imagecreatefromjpeg($uploadedfile);
			break;

			case 'image/png':
				//temporarily increase the server memory
			ini_set( 'memory_limit', '16M' );
				//process the png
			$source = imagecreatefrompng($uploadedfile);
			ini_restore('memory_limit');
			break;
			default:
			$feedback = 'The only valid filetypes are .gif, .jpg, and .png';
		}//end of switch

		//resize and save each image size
		$uniquestring = sha1(microtime());

		foreach ($sizes AS $size_name => $size) {

			/*SQUARE CROP CALCULATIONS*/
			if ($width > $height) {
				$crop_y = 0;
				$crop_x = ($width - $height) / 2;
				$smallestSide = $height;
			} else {
				$crop_x = 0;
				$crop_y = ($height - $width) / 2;
				$smallestSide = $width;
			}

			//resize the image - make a new blank canvas of the desired size
			$tmp_canvas = imagecreatetruecolor($size, $size);
			//copy the original image onto this canvas and resize
			imagecopyresampled($tmp_canvas, $source, 0, 0, $crop_x, $crop_y, $size, $size, $smallestSide, $smallestSide);

			//path will be like: ../uploads/dfgjdfhngkhf_thumbnail.jpg
			$filepath = $upload_directory . '/' . $uniquestring . '_' . $size_name . '.jpg';
			
			//save the image into the directory!
			$did_save = imagejpeg($tmp_canvas, $filepath, 75);		
		}//end foreach

		//if it worked, save the file name in the DB for the logged in user
		if($did_save){
			//delete the old avatar
			$query_old = "SELECT userpic FROM users 
			WHERE user_id = " . USER_ID  
			. " LIMIT 1";
			$result_old = $db->query($query_old);
			if($result_old->num_rows == 1){
				$row_old = $result_old->fetch_assoc();

				foreach ($sizes as $size_name => $size) {
					$old_filepath = ROOT_PATH . '/uploads/' . $row_old['userpic'] . '_' 
					. $size_name . '.jpg';
					//DELETE
					@unlink($old_filepath);
				}

			}
			//END DELETE old file

			$query = "UPDATE users
			SET userpic = '$uniquestring'
			WHERE user_id = " . USER_ID ;
			$result = $db->query($query);
			if($db->affected_rows >= 1){
				$feedback = 'success';
			}else{
				$feedback = 'db error';
			}		

		}else{
			$feedback = 'The file did not save';
		}			


	}else{
		$feedback = 'That file is not an image. try again';
	}

} //end of upload parser
?>

<section class="panel important">
	<h2>Edit your Profile </h2>

	<?php show_userpic( USER_ID, 'thumbnail'); ?>	

	<?php form_feedback($feedback, array()); ?>

	<form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="post" 
		enctype="multipart/form-data">

		<label>Change your User Picture</label>
		<input type="file" name="uploadedfile">

		<input type="submit" value="Save User Picture">

		<input type="hidden" name="did_upload" value="1">				
	</form>
</section>


<?php 
//has close main, close body & html
include('admin-footer.php'); ?>