再一次，我在这里遇到了一个简单的问题，我无法解决，因为我使用的搜索术语显然与以前使用的搜索术语不匹配。我想创建的只是一小段脚本，可以使用URL更改图像宽度。通过URL更改图片大小
一个例子可以在http://waarneming.nl/fotonew/0/2639780.jpg上找到。如果添加变量?w=100&h=100，图像将调整大小。值得一提的是，我不需要裁剪（虽然100x100当然不是正确的比例，但在示例中也不会发生这种情况）。唯一发生的事情是可以用CSS和HTML做什么：更改更大图片的高度和宽度。但是因为我需要在另一个脚本中调整大小的图像，所以我想使用URL变量。
希望你能帮助！
使用SimpleImage库：
<?php
/*
* File: SimpleImage.php
* Author: Simon Jarvis
* Copyright: 2006 Simon Jarvis
* Date: 08/11/06
* Link: http://www.white-hat-web-design.co.uk/articles/php-image-resizing.php
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details:
* http://www.gnu.org/licenses/gpl.html
*
*/
class SimpleImage {
var $image;
var $image_type;
function load($filename) {
$image_info = getimagesize($filename);
$this->image_type = $image_info[2];
if($this->image_type == IMAGETYPE_JPEG) {
$this->image = imagecreatefromjpeg($filename);
} elseif($this->image_type == IMAGETYPE_GIF) {
$this->image = imagecreatefromgif($filename);
} elseif($this->image_type == IMAGETYPE_PNG) {
$this->image = imagecreatefrompng($filename);
}
}
function save($filename, $image_type=IMAGETYPE_JPEG, $compression=75, $permissions=null) {
if($image_type == IMAGETYPE_JPEG) {
imagejpeg($this->image,$filename,$compression);
} elseif($image_type == IMAGETYPE_GIF) {
imagegif($this->image,$filename);
} elseif($image_type == IMAGETYPE_PNG) {
imagepng($this->image,$filename);
}
if($permissions != null) {
chmod($filename,$permissions);
}
}
function output($image_type=IMAGETYPE_JPEG) {
if($image_type == IMAGETYPE_JPEG) {
imagejpeg($this->image);
} elseif($image_type == IMAGETYPE_GIF) {
imagegif($this->image);
} elseif($image_type == IMAGETYPE_PNG) {
imagepng($this->image);
}
}
function getWidth() {
return imagesx($this->image);
}
function getHeight() {
return imagesy($this->image);
}
function resizeToHeight($height) {
$ratio = $height/$this->getHeight();
$width = $this->getWidth() * $ratio;
$this->resize($width,$height);
}
function resizeToWidth($width) {
$ratio = $width/$this->getWidth();
$height = $this->getheight() * $ratio;
$this->resize($width,$height);
}
function scale($scale) {
$width = $this->getWidth() * $scale/100;
$height = $this->getheight() * $scale/100;
$this->resize($width,$height);
}
function resize($width,$height) {
$new_image = imagecreatetruecolor($width, $height);
imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
$this->image = $new_image;
}
}
?>
那么，试试这个：
<?php
include('SimpleImage.php');
$image = new SimpleImage();
$image->load($_GET['file']);
$image->resize($_GET['width'], $_GET['height']);
$image->output();
?>
为了调用脚本，你会传递文件名，通过你的URL的宽度和高度。假设脚本名为foo.php：
http://www.example.com/foo.php?file=picture_name.jpg&width=100&height=100
如果你想做服务端，为什么不使用GD？ – boruch
这只是GD上的一个抽象，用于简化使用 –
您可以在JavaScript中获取参数并将其分配给图像。 喜欢的东西：
function gup(name)
{
name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
var regexS = "[\\?&]"+name+"=([^&#]*)";
var regex = new RegExp(regexS);
var results = regex.exec(window.location.href);
if(results == null)
return "";
else
return results[1];
}
然后：
var imagelengh = gup('w')
$('#image').width(w)
这里有几个环节，这可能有助于：
net.tutsplus.com: image resizing made easy with php
是的，downvote ...就像他真的试图寻求网络之前询问 – Bgi
你想保存这些影像尺寸（即保存图像与它的新的大小）或只是在不同大小显示图像？ – legrandviking
只需显示它。它不应该创建一个新文件。 – Stijn