height of thumb

[runei]

Oy people.

 

I got the following script making thumbnails. It sets the width of the thumbnail but i also want a set height for the thumbnail. Need some help..

 

<?php
ob_start();
error_reporting (E_COMPILE_ERROR|E_ERROR|E_CORE_ERROR);
$final_width_of_image = 100;
$path_to_image_directory = 'images/fullsized/';
$path_to_thumbs_directory = 'images/thumbs/';

if (isset($_FILES['myphoto'])) {
    
    if (preg_match('/[.](jpg)|(JPG)|(JEPG)|(gif)|(png)$/', $_FILES['myphoto']['name'])) {
        
        $filename = $_FILES['myphoto']['name'];
        $source = $_FILES['myphoto']['tmp_name'];
        $target = $path_to_image_directory . $filename;

        move_uploaded_file($source, $target);

        if (preg_match('/[.](jpg)$/', $filename)) {
            $myimage = imagecreatefromjpeg($path_to_image_directory . $filename);
        } else
            if (preg_match('/[.](gif)$/', $filename)) {
                $myimage = imagecreatefromgif($path_to_image_directory . $filename);
            } else
                if (preg_match('/[.](png)$/', $filename)) {
                    $myimage = imagecreatefrompng($path_to_image_directory . $filename);
                }

	$width = imagesx($myimage);
        $height = imagesy($myimage);

        $finalwidth = $final_width_of_image;
        $newyvalue = floor($height * ($finalwidth / $width));
        $color = imagecreatetruecolor($finalwidth, $newyvalue);

        imagecopyresampled($color, $myimage, 0, 0, 0, 0, $finalwidth, $newyvalue, $width, $height);

        if (!file_exists($path_to_thumbs_directory)) {
            if (!mkdir($path_to_thumbs_directory)) {
                die("There was a problem. Please try again!");
                
            }
        }

        imagejpeg($color, $path_to_thumbs_directory . $filename);
        $thumb = '<img src="' . $path_to_thumbs_directory . $filename . '" alt="image" />';
        #$thumb .= '<br />Congratulations. Your file has been successfully uploaded, and a      thumbnail has been created.';
       # echo $thumb;
    }
} //isset


$con = mysql_connect("localhost", "root") or die(mysql_error());
$db = mysql_select_db("delmar", $con);

$name = $_POST['picname'];
$pic = ($_FILES['myphoto']['name']);

$date = date("m-d-y") . " at " . date("G:i:s");
$time = time();

if ($name && $pic) {
    $sql1 = mysql_query("INSERT INTO `mar_photo` (`name`,`photo`,`date`,`time`)VALUES ('$name','$pic','$date','$time')");
} else {
    echo "Error..............";
}//end if


header("Location: myphotos.php");
ob_end_flush();
?>

 

thx

runei

[jackpf]

What a coincidence- I was just reading this post http://www.phpfreaks.com/forums/index.php/topic,241827.msg1128334.html#msg1128334

 

There might be some useful pointers on there...

[kickstart]

Hi

 

Similar idea of dynamically changing the image size. I have a page setup that returns the users screen width / height in cookies, and then resizes the images to a best fit while keeping the ratio of width to height. I have put it below. I am sure you can chop this around to use a set max width / height (and probably clean the code up while you are at it).

 

function imageResize($width, $height) { 

//takes the larger size of the width and height and applies the  formula accordingly...this is so this script will work  dynamically with any size image 

if (isset($_COOKIE["users_resolution_x"]) && isset($_COOKIE["users_resolution_y"]) )
{

	$screenSpaceX = $_COOKIE["users_resolution_x"] - 20;
	//If the Zeta logo is to be displayed under the image
	//$screenSpaceY = $_COOKIE["users_resolution_y"] - 67;
	$screenSpaceY = $_COOKIE["users_resolution_y"] - 20;

	if ($screenSpaceX > 200 && $screenSpaceY > 200)
	{

		$wPercentage = $screenSpaceX / $width;
		$hPercentage = $screenSpaceY / $height;

		if ($wPercentage > $hPercentage)
		{
			$percentage = $hPercentage;
		}
		else
		{
			$percentage = $wPercentage;
		}

		If ($percentage > 1 && $percentage < 1.5)
		{
			$percentage = 1;
		}

		switch (true)
		{
			case ($percentage > 1 && $percentage < 1.5) :	
				$percentage = 1;
				break;
			case ($percentage >= 1.5 && $percentage < 2) :	
				$percentage = 1.5;
				break;
			case ($percentage >= 2 && $percentage < 3) :	
				$percentage = 2;
				break;
			case ($percentage >= 3 && $percentage < 5) :	
				$percentage = 3;
				break;
			default :
				break;
		}	

		//gets the new value and applies the percentage, then rounds the value 
		$width = round($width * $percentage); 
		$height = round($height * $percentage); 
	}
}

	//returns the new sizes in html image tag format...this is so you can plug this function inside an image tag and just get the 

return "width:".$width."px;height:".$height."px;"; 

}

 

All the best

 

Keith

[runei]

Im still trying to figure it out. When implementing height the thumbnail goes black, after what i read this has something to do with the path. I know the path is correct so it is the script i am messing up. Btw, does imagesx and imagesy accomplish the same thing as getimagesize? Better to go with getimagesize then..