skriv uploaderen i en fil eks. upload.php
<?php
function image_resize($src,$dest,$maxWidth,$maxHeight,$quality=100) {
if (file_exists($src) && isset($dest)) {
// path info
$destInfo = pathInfo($dest);
// image src size
$srcSize = getImageSize($src);
// image dest size $destSize[0] = width, $destSize[1] = height
$srcRatio = $srcSize[0]/$srcSize[1]; // width/height ratio
$destRatio = $maxWidth/$maxHeight;
if ($destRatio > $srcRatio) {
$destSize[1] = $maxHeight;
$destSize[0] = $maxHeight*$srcRatio;
}
else {
$destSize[0] = $maxWidth;
$destSize[1] = $maxWidth/$srcRatio;
}
// path rectification
if ($destInfo['extension'] == "gif") {
$dest = substr_replace($dest, 'jpg', -3);
}
// true color image
$destImage = imageCreateTrueColor($destSize[0],$destSize[1]);
//
// src image
switch ($srcSize[2]) {
case 1: //GIF
$srcImage = imageCreateFromGif($src);
break;
case 2: //JPEG
$srcImage = imageCreateFromJpeg($src);
break;
case 3: //PNG
$srcImage = imageCreateFromPng($src);
break;
default:
return false;
break;
}
// resampling
imageCopyResampled($destImage, $srcImage, 0, 0, 0, 0,$destSize[0],$destSize[1],$srcSize[0],$srcSize[1]);
// generating image
switch ($srcSize[2]) {
case 1:
case 2:
imageJpeg($destImage,$dest,$quality);
break;
case 3:
imagePng($destImage,$dest);
break;
}
return true;
}
else {
return false;
}
}
// Upload function
function upload_pic($src, $src_t, $src_name, $dest, $overwrite='false') {
$filetypes = array("image/gif", "image/pjpeg", "image/png");
$thumbdest = "$dest/thumb/$src_name";
$dest = "$dest/$src_name";
if (in_array("$src_t", $filetypes)) {
if ($overwrite == "true") {
if (file_exists($dest)) {
unlink($dest);
}
move_uploaded_file($src, $dest);
image_resize($dest,$dest,600,1000,100);
if (file_exists($thumbdest)) {
unlink($thumbdest);
}
copy($dest, $thumbdest);
image_resize($thumbdest,$thumbdest,100,100,100);
if ($src_t == "image/gif") {
unlink($thumbdest);
}
return true;
} else {
if (!file_exists($dest) || !file_exists($thumbdest)) {
move_uploaded_file($src, $dest);
image_resize($dest,$dest,600,1000,100);
copy($dest, $thumbdest);
image_resize($thumbdest,$thumbdest,100,100,100);
return true;
} else {
die("Filen eksistere allerede omdøb den venligst eller vælg overskriv <b>\"".$src_name."\"</b><br><a href=\"java script:history.back(-1)\">Tilbage</a>");
}
}
} else {
return false;
die("Filen er ikke et gyldigt billedeformat <b>\"".$src_name."\"</b>");
}
}
$dest = "../images";
// lav evt. et par check på om dataen er blevet submitet og om fil størrelsen er for stor
upload_pic($file, $file_type, $file_name, $dest, $overwrite);
?>
og skriv formen i en anden fil eks. form.php
<form action="upload.php" method="post" enctype="multipart/form-data">
<input type="file" name="file"> billedefil<br>
<input type="checkbox" name="overwrite" value="true"> overskriv<br>
<input type="submit" name="upload">
</form>
