php抓取网站图片源码

<?php/*完成网页内容捕获功能*/function get_img_url($site_name){ $site_fd = fopen($site_name, "r"); $site_content = ""; while (!feof($site_fd)) { $site_content .= fread($site_fd, 1024); } /*利用正则表达式得到图片链接*/ $reg_tag = '/<img.*?\"([^\"]*(jpg|bmp|jpeg|gif)).*?>/'; $ret = preg_match_all($reg_tag, $site_content, $match_result); fclose($site_fd); return $match_result[1];}
/* 对图片链接进行修正 */function revise_site($site_list, $base_site){ foreach($site_list as $site_item) { if (preg_match('/^http/', $site_item)) { $return_list[] = $site_item; }else{ $return_list[] = $base_site."/".$site_item; } } return $return_list;}
/*得到图片名字，并将其保存在指定位置*/function get_pic_file($pic_url_array, $pos){ $reg_tag = '/.*\/(.*?)$/'; $count = 0; foreach($pic_url_array as $pic_item){ $ret = preg_match_all($reg_tag,$pic_item,$t_pic_name); $pic_name = $pos.$t_pic_name[1][0]; $pic_url = $pic_item; print("Downloading ".$pic_url." "); $img_read_fd = fopen($pic_url,"r"); $img_write_fd = fopen($pic_name,"w"); $img_content = ""; while(!feof($img_read_fd)){ $img_content .= fread($img_read_fd,1024);
} fwrite($img_write_fd,$img_content); fclose($img_read_fd); fclose($img_write_fd); print("[OK] "); } return 0;}
function main(){/* 待抓取图片的网页地址 */ $site_name = "http://uuhy.com/html/26785.html"; $img_url = get_img_url($site_name); $img_url_revised = revise_site($img_url, $site_name); $img_url_unique = array_unique($img_url_revised); //unique array get_pic_file($img_url_unique,"./");}
main();?>

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