PHP automatically generates thumbnails based on URL (source code attached)

sudo a2enmod rewrite

2, the content of the .htaccess file:

RewriteEngine On

# '-s' (is regular file, with size)
# '-l' (is symbolic link)
# '-d' (is directory)
# 'ornext|OR' (or next condition)
# 'nocase|NC' (no case)
# 'last|L' (last rule)

RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]
RewriteRule ^.*$ createthumb.php?path=%{REQUEST_URI} [NC,L]

For the configuration method of htaccess file, please refer to: Detailed explanation of apache .htaccess configuration .htaccess configuration detailed explanation (a comprehensive classic not to be missed) .htaccess file usage summary .htaccess tutorial.htaccess learning summary Example of Apache using .htaccess to configure pseudo-static configuration A few examples of htaccess pseudo-static rule configuration Discuss: htaccess URL rewrite and redirect redirect 3. createthumb.php

define('WWW_PATH', dirname(dirname(__FILE__))); // Site www directory

require(WWW_PATH.'/PicThumb.class.php'); // include PicThumb.class.php
require(WWW_PATH.'/ThumbConfig.php'); // include ThumbConfig.php

$logfile = WWW_PATH.'/createthumb.log'; // Log file
$source_path = WWW_PATH.'/ upload/'; // Original path
$dest_path = WWW_PATH.'/supload/'; // Target path

$path = isset($_GET['path'])? $_GET['path'] : '' ; // Accessed image URL

// Check path
if(!$path){
 exit();
}

// Get image URI
$relative_url = str_replace($dest_path, '', WWW_PATH.$ path);

// Get type
$type = substr($relative_url, 0, strpos($relative_url, '/'));

// Get config
$config = isset($thumb_config[$type]) ? $thumb_config[$type] : '';

// Check config
if(!$config || !isset($config['fromdir'])){
 exit();
}

// Original Image file
$source = str_replace('/'.$type.'/', '/'.$config['fromdir'].'/', $source_path.$relative_url);

// Target file
$ dest = $dest_path.$relative_url;

// Create thumbnail
$obj = new PicThumb($logfile);
$obj->set_config($config);
if($obj->create_thumb($source , $dest)){
 ob_clean();
 header('content-type:'.mime_content_type($dest));
 exit(file_get_contents($dest));
}

?>

4,ThumbConfig.php

$thumb_config = array(

 'news' => array(
 'fromdir' => 'news', // Source directory
 'type' => 'fit ',
 'width' => 100,
 'height' => 100,
 'bgcolor' => '#FF0000'
 ),

 'news_1' => array(
 'fromdir' => ; 'news',
 'type' => 'fit',
 'width' => 200,
 'height' => 200,
 'bgcolor' => '#FFFF00'
 ),

 'article' => array(
 'fromdir' => 'article',
 'type' => 'crop',
 'width' => 250,
 'height' => 250,
 ' watermark' => WWW_PATH.'/supload/watermark.png'
 )

);

?>

For example, after accessing these three paths, thumbnails will be automatically generated by pressing config

http://localhost/supload/news/2013/07/21/1.jpg http://localhost/supload/news_1/2013/07/21/1.jpg http://localhost/supload/article/2013/07/21/2.jpg

Attachment, php automatically generates the source code download address of the thumbnail according to the url