[SAE移植]搞了首页缩略图处理，几个重要部分记录下

add_theme_support( 'post-thumbnails' );

function post_thumbnail( $width = 120,$height = 100 ){

global $post;

if( has_post_thumbnail() ){ //如果有缩略图，则显示缩略图

$timthumb_src = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID),'full');

$post_timthumb = '<img src="'.$timthumb_src[0].'"Width="120px" Height="100px" alt="'.$post->post_title.'" class="thumb" />';

echo $post_timthumb;

} else {

$post_timthumb = '';

ob_start();

ob_end_clean();

$output = preg_match('/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', $post->post_content, $index_matches);

$first_img_src = $index_matches [1];

if( !empty($first_img_src) ){

$path_parts = pathinfo($first_img_src);

$first_img_name = $path_parts["basename"];

$first_img_pic = 'http://kn007-cache.stor.sinaapp.com/'.$first_img_name;

$first_img_file = $first_img_name;

$s = new SaeStorage();

if ( $s->fileExists("cache",$first_img_file)){
} else {
$f = new SaeFetchurl();
$img_data = $f->fetch( $first_img_src);
$img = new SaeImage();
$img->setData( $img_data );
$img->resize(120,100); // 等比缩放
$content = $img->exec(); // 执行处理并返回处理后的二进制数据

$s->delete("cache",first_img_file);
//$content = @file_get_contents($first_img_src);
@file_put_contents($first_img_pic,$content);
$attr = array('expires' => 'now plus 7 day');
$s->write('cache', $first_img_file, $content, -1, $attr);
$s->upload("cache", $first_img_file,$first_img_src);
//var_dump($s->errno(), $s->errmsg());

$post_timthumb = '<img src="'.$first_img_src.'" alt="'.$post->post_title.'" class="thumb" />';

}

$post_timthumb = '<img src="'.$first_img_pic.'"Width="120px" Height="100px" alt="'.$post->post_title.'" class="thumb" />';

} else {$post_timthumb = '<img src="'.get_bloginfo("template_url").'/images/default_thumb.jpg" alt="'.$post->post_title.'" class="thumb" />'; }

echo $post_timthumb;

}

}