Upload, resize, rename image pomocu PHP

[vladakg]

Zamisao mi je da se na stranici galerija na sajtu u jednoj listi izlistaju male slicice a da klikom na sliku se pokaze veca slika. Skinuo sam jednu skripticu pomocu koje pravim resize slika koje upload-ujem na sajt. Sad bih hteo da je jos malo prepravim i da pomocu nje pravim i thumbnail-ove. Znaci hteo bih ako je moguce da upload-ujem jednu sliku, a da mi automatski ta slika promeni velicinu,tj. da dobije rezoluciju koju ja zelim, i da se napravi i njena kopija sa jos manjom rezolucijom koju bi ja odredio i da ime te male slicice dobije prefiks thumb_ . Skripta je sledeca:

if ((isset($_POST["submitted_form"])) && ($_POST["submitted_form"] == "image_upload_form")) {

// file needs to be jpg,gif,bmp,x-png and 6 MB max
if (($_FILES["slika1"]["type"] == "image/jpeg" || $_FILES["slika1"]["type"] == "image/pjpeg" || $_FILES["slika1"]["type"] == "image/gif" || $_FILES["slika1"]["type"] == "image/x-png") && ($_FILES["slika1"]["size"] < 6000000))
{


// some settings
$max_upload_width = 4256;
$max_upload_height = 2832;

// if user chosed properly then scale down the image according to user preferances
if(isset($_REQUEST['max_width_box']) and $_REQUEST['max_width_box']!='' and $_REQUEST['max_width_box']<=$max_upload_width){
$max_upload_width = $_REQUEST['max_width_box'];
}
if(isset($_REQUEST['max_height_box']) and $_REQUEST['max_height_box']!='' and $_REQUEST['max_height_box']<=$max_upload_height){
$max_upload_height = $_REQUEST['max_height_box'];
}


// if uploaded image was JPG/JPEG
if($_FILES["slika1"]["type"] == "image/jpeg" || $_FILES["slika1"]["type"] == "image/pjpeg"){
$image_source = imagecreatefromjpeg($_FILES["slika1"]["tmp_name"]);
}
// if uploaded image was GIF
if($_FILES["slika1"]["type"] == "image/gif"){
$image_source = imagecreatefromgif($_FILES["slika1"]["tmp_name"]);
}
// BMP doesn't seem to be supported so remove it form above image type test (reject bmps)
// if uploaded image was BMP
if($_FILES["slika1"]["type"] == "image/bmp"){
$image_source = imagecreatefromwbmp($_FILES["slika1"]["tmp_name"]);
}
// if uploaded image was PNG
if($_FILES["slika1"]["type"] == "image/x-png"){
$image_source = imagecreatefrompng($_FILES["slika1"]["tmp_name"]);
}

// lokacija slika
$remote_file = "images/".$_FILES["slika1"]["name"];
imagejpeg($image_source,$remote_file,100);
chmod($remote_file,0644);



// get width and height of original image
list($image_width, $image_height) = getimagesize($remote_file);

if($image_width>$max_upload_width || $image_height >$max_upload_height){
$proportions = $image_width/$image_height;

if($image_width>$image_height){
$new_width = $max_upload_width;
$new_height = round($max_upload_width/$proportions);
}
else{
$new_height = $max_upload_height;
$new_width = round($max_upload_height*$proportions);
}


$new_image = imagecreatetruecolor($new_width , $new_height);
$image_source = imagecreatefromjpeg($remote_file);

imagecopyresampled($new_image, $image_source, 0, 0, 0, 0, $new_width, $new_height, $image_width, $image_height);
imagejpeg($new_image,$remote_file,100);

imagedestroy($new_image);
}

imagedestroy($image_source);

}
}

Pomocu nje dobijem rezoluciju slike koju zelim, e sad kako da mi napravi i kopiju slike sa nekom drugom rezolucijom i da doda imenu slike "thumb_" ?

[VojaM]

E, to ćeš morati ti.

[vladakg]

Resenje problema

<?php // if an image is uploaded
if(isset($_POST['submit']))
{
// the thumbnail height
$size = 150;
$brand = 600;

// the directory where the original uploaded image is saved
$filedir = 'images/';
// the directory where the thumbnail image is saved
$thumbdir = 'images2/';
// the prefix to be added to the original name to name the thumbnail
$prefix = 'thumb_';

// the file settings for the uploaded image
$mode = '0666';

$userfile_name = $_FILES['image']['name'];
$userfile_tmp = $_FILES['image']['tmp_name'];
$userfile_size = $_FILES['image']['size'];
$userfile_type = $_FILES['image']['type'];

if(isset($_FILES['image']['name']))
{
$prod_img = $filedir.$userfile_name;
move_uploaded_file($userfile_tmp, $prod_img);
chmod($prod_img, octdec($mode));

$sizes = getimagesize($prod_img);

$aspect_ratio = $sizes[1]/$sizes[0];

if ($sizes[1] <= $brand)
{
$new_w = $sizes[0];
$new_h = $sizes[1];
}else{
$new_h = $brand;
$new_w = abs($new_h/$aspect_ratio);
}

$destimg=imagecreatetruecolor($new_w,$new_h)
or die('Problem In Creating image');
$srcimg=imagecreatefromjpeg($prod_img)
or die('Problem In opening Source Image');
imagecopyresized($destimg,$srcimg,0,0,0,0,$new_w,$ new_h,imagesx($srcimg),imagesy($srcimg))
or die('Problem In resizing');
imagejpeg($destimg,$prod_img,90)
or die('Problem In saving');
imagedestroy($destimg);





$prod_img_thumb = $thumbdir.$prefix.$userfile_name;
move_uploaded_file($userfile_tmp, $prod_img);
chmod($prod_img, octdec($mode));

$sizes = getimagesize($prod_img);

$aspect_ratio = $sizes[1]/$sizes[0];

if ($sizes[1] <= $size)
{
$new_w = $sizes[0];
$new_h = $sizes[1];
}else{
$new_h = $size;
$new_w = abs($new_h/$aspect_ratio);
}

$destimg=imagecreatetruecolor($new_w,$new_h)
or die('Problem In Creating image');
$srcimg=imagecreatefromjpeg($prod_img)
or die('Problem In opening Source Image');
imagecopyresized($destimg,$srcimg,0,0,0,0,$new_w,$ new_h,imagesx($srcimg),imagesy($srcimg))
or die('Problem In resizing');
imagejpeg($destimg,$prod_img_thumb,90)
or die('Problem In saving');
imagedestroy($destimg);

}

echo '
<a href="'.$prod_img.'">
<img src="'.$prod_img_thumb.'" width="'.$new_w.'" heigt="'.$new_h.'" alt="" />
</a>';

// show an upload form to upload and resize an image
}else{

echo '
<form method="post" action="'.$_SERVER['PHP_SELF'].'" enctype="multipart/form-data">
<input type="file" name="image" />
<input type="submit" name="submit" value="upload and resize image" />
</form>';
}

?>