简要介绍。我们目前需要根据网站上的产品图片制作小、中、大三种不同尺寸的图片。由于我对PHP并不是很熟悉,因此我想尝试自动化这个恶梦。
我们上传的图片和缩略图的尺寸如下:
800 width x 1400 width LARGE
300 width x 525 width THUMB
我的PHP脚本的问题在于它只能按比例缩放来调整大小。我希望它能像Photoshop一样进行缩小,只需点击shift键即可缩放图像。我尝试使用
imagecopyresized
,但运气不佳。<?php
// PHP UPLOAD SCRIPT
// VALIDATION OF FORM
if($_FILES['user_image']['type'] == "image/jpeg" && $_FILES['user_image']['size'] < 3000000)
{
// VARS
$target_folder = 'images/';
$upload_image = $target_folder.basename($_FILES['user_image']['name']);
// UPLOAD FUNCTION
if(move_uploaded_file($_FILES['user_image']['tmp_name'], $upload_image))
{
// VARS FOR FILE NAMES
$thumbnail = $target_folder."medium_x.jpg";
$actual = $target_folder."large_x.jpg";
// THUMBNAIL SIZE
list($width, $height) = getimagesize($upload_image);
$newwidth = "300";
$newheight = "525";
// VARS FOR CALL BACK
$thumb = imagecreatetruecolor($newwidth, $newheight);
$source = imagecreatefromjpeg($upload_image);
// RESIZE WITH PROPORTION LIKE PHOTOSHOP HOLDING SHIFT
imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
// MAKE NEW FILES
imagejpeg($thumb, $thumbnail, 100);
// FILE RENAMES
rename($upload_image, $actual);
{
// SUCCESS MESSAGES
?>
<p>
Image Successfully uploaded!<br />
Actual image: <?=$actual;?><br />
Thumbnail image: <?=$thumbnail;?><br />
<h1>Large</h1>
<img src="<?=$actual;?>"/><br /><br />
<h1>Medium</h1>
<img src="<?=$thumbnail;?>"/><br /><br />
</p>
<?
}
// FAILED MESSAGES
}
else
{
echo 'Upload failed.';
}
}
else
{
// NOT A JPEG
echo 'Not a JPEG';
}
// END OF SCRIPT
?>
我如何在不拉伸图像的情况下正确调整大小?这是否可能?
imagecopyresized
命令吗? - TheBlackBenzKid