再一次，我在這裏遇到了一個簡單的問題，我無法解決，因爲我使用的搜索術語顯然與以前使用的搜索術語不匹配。我想創建的只是一小段腳本，可以使用URL更改圖像寬度。通過URL更改圖片大小
一個例子可以在http://waarneming.nl/fotonew/0/2639780.jpg上找到。如果添加變量?w=100&h=100，圖像將調整大小。值得一提的是，我不需要裁剪（雖然100x100當然不是正確的比例，但在示例中也不會發生這種情況）。唯一發生的事情是可以用CSS和HTML做什麼：更改更大圖片的高度和寬度。但是因爲我需要在另一個腳本中調整大小的圖像，所以我想使用URL變量。
希望你能幫助！
使用SimpleImage庫：
<?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;
}
}
?>
那麼，試試這個：
<?php
include('SimpleImage.php');
$image = new SimpleImage();
$image->load($_GET['file']);
$image->resize($_GET['width'], $_GET['height']);
$image->output();
?>
爲了調用腳本，你會傳遞文件名，通過你的URL的寬度和高度。假設腳本名爲foo.php：
http://www.example.com/foo.php?file=picture_name.jpg&width=100&height=100
如果你想做服務端，爲什麼不使用GD？ – boruch
這只是GD上的一個抽象，用於簡化使用 –
您可以在JavaScript中獲取參數並將其分配給圖像。 喜歡的東西：
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];
}
然後：
var imagelengh = gup('w')
$('#image').width(w)
這裏有幾個環節，這可能有助於：
net.tutsplus.com: image resizing made easy with php
是的，downvote ...就像他真的試圖尋求網絡之前詢問 – Bgi
你想保存這些影像尺寸（即保存圖像與它的新的大小）或只是在不同大小顯示圖像？ – legrandviking
只需顯示它。它不應該創建一個新文件。 – Stijn