function-imageresize

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  1. function-imageresize

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<?php
function image_resize($image,$width,$height,$color=array(0,0,0)){
    if(@$size = getimagesize($image)){
        $newsize=array();
        if($size[0]==$size[1]){
            $newsize['width']=$width;
            $newsize['height']=$height;
        }elseif($size[0]<$size[1]){
            $ratio=$height/$size[1];
            $newsize['width']=$ratio*$size[0];
            $newsize['height']=$ratio*$size[1];
        }else{
            $ratio=$width/$size[0];
            $newsize['width']=$ratio*$size[0];
            $newsize['height']=$ratio*$size[1];
        }
        if($newsize['width']>$size[0]){
            $newsize['width']=$size[0];
        }
        if($newsize['height']>$size[1]){
            $newsize['height']=$size[1];
        }
        switch($size[2]){
            case 1:
                $input=imagecreatefromgif($image);
                break;
            case 2:
                $input=imagecreatefromjpeg($image);
                break;
            case 3:
                $input=imagecreatefrompng(image);
                break;
            default:
                $input=imagecreate($width,$height);
                imagecolorallocate($input,125,125,125);
                imagestring($input,2,2,2,'Wrong image type',imagecolorallocate($input,230,230,230));
        }
        $output=imagecreatetruecolor($width,$height);
        imagecolorallocate($output,$color[0],$color[1],$color[2]);
        imagecopyresampled($output,$input,0,0,0,0,$newsize['width'],$newsize['height'],$size[0],$size[1]);
    }else{
        $output=imagecreate($width,$height);
        imagecolorallocate($output,125,125,125);
        imagestring($output,2,2,2,'The image does not exists',imagecolorallocate($output,230,230,230));
        imagestring($output,2,2,15,'or is not reachable',imagecolorallocate($output,230,230,230));
    }
    imagepng($output);
}
image_resize('http://website.com/pic.gif',100,200,array(255,0,0));
/* de eerste waarde is de url naar het plaatje
    de 2e de breedte
    de 3e is de hoogte
    en de 4e de kleuren (in RGB) */
?>

 
 

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