When users submit a url, I would like to have my pligg craw on that target url and catch images for users to choose for the submission, which is just like digg's submission.
now, you can type in any url in
uspie.net to get images. I have set my script to filter out smaller images from webpage design such as corners, spacers, etc. Currently, images smaller than 150px width and 40px height are filtered out. Large images are also scaled proportionally.
I wonder how to make the images out as radio buttons for users to choose from, anyone can give me a hint on this??
thanks!
Edit on July 17, 2008:
Here's the mod:
1. In your submit.php file, find the function do_submit1, around line 211 (or somewhere after the code: $linkres->status='discard';
$linkres->author=$current_user->user_id;
$linkres->store()
,
add
PHP Code:
//catch images on destination url
$pageString = @file_get_contents($url);
preg_match_all('|<img .*?>|s', $pageString, $matches);
//the array $matches[0] now contains the img tags, let's echo 'em:
$fulldomain = 'http://www.'. $domain;
$newimages = array(); //initialize an array as image container
foreach ($matches[0] as $path){
preg_match('/src="([^"]+)"/',$path, $b); //get the image path by $b[1], however, will need to detect relative paths and convert to absolute paths
$location = $linkres->relative2absolute($fulldomain, $b[1]);//this is to convert relative image paths to absolute image paths
$filteredimg = $linkres->filterimage($location, 120, 120);
if ($filteredimg) {
$image = $linkres->scaleimage($filteredimg, 100, 100); //scale bigger images and filter out images smaller than 100x100. You can modify the picture dimensions limit based on your needs.
$newimages[] = array(
'url' => $location,
'img_tag' => $image,
);
}
}
$main_smarty->assign('newimages', $newimages);
//end of get images
In the same submit.php file, after the code line ( if(isset($_POST['link_field15'])){$linkres->link_field15 = strip_tags(trim($_POST['link_field15']), Story_Content_Tags_To_Allow);}), add the following:
PHP Code:
//reset link_field1 as $product_image
if(!empty($product_image_manual)){ //entered manually by user
$linkres->link_field1 = $product_image_manual;
}
else {
if(!empty($linkres->product_image)){
$linkres->link_field1 = $linkres->product_image; //use link_field1 to store the image path
}
}
Now, find the link.php in the /libs folder, anywhere between two function close brackets, add the following code
PHP Code:
//Tony, get images 20080226
function relative2absolute($absolute, $relative) {
$p = @parse_url($relative);
if(!$p) {
//$relative is a seriously malformed URL
return false;
}
if(isset($p["scheme"])) return $relative;
$parts=(parse_url($absolute));
if(substr($relative,0,1)=='/') {
$cparts = (explode("/", $relative));
array_shift($cparts);
} else {
if(isset($parts['path'])){
$aparts=explode('/',$parts['path']);
array_pop($aparts);
$aparts=array_filter($aparts);
} else {
$aparts=array();
}
$rparts = (explode("/", $relative));
$cparts = array_merge($aparts, $rparts);
foreach($cparts as $i => $part) {
if($part == '.') {
unset($cparts[$i]);
} else if($part == '..') {
unset($cparts[$i]);
unset($cparts[$i-1]);
}
}
}
$path = implode("/", $cparts);
$url = '';
if($parts['scheme']) {
$url = "$parts[scheme]://";
}
if(isset($parts['user'])) {
$url .= $parts['user'];
if(isset($parts['pass'])) {
$url .= ":".$parts['pass'];
}
$url .= "@";
}
if(isset($parts['host'])) {
$url .= $parts['host']."/";
}
$url .= $path;
return $url;
}
function filterimage($location, $minW=NULL, $minH=NULL){
$img = @getimagesize($location);
if ($img){ //if image exists
$w = $img[0];
$h = $img[1];
if ($w >= $minW && $h >= $minH){ //only if images greater than the minimums are they returned, otherwise, no
return $location;
}
else {
return false; //return no images
}
}
}
function scaleimage($location, $maxw=NULL, $maxh=NULL, $alt=NULL, $title=NULL){
$img = @getimagesize($location);
if($img){
$w = $img[0];
$h = $img[1];
$dim = array('w','h');
foreach($dim AS $val){
$max = "max{$val}";
if(${$val} > ${$max} && ${$max}){
$alt = ($val == 'w') ? 'h' : 'w';
$ratio = ${$alt} / ${$val};
${$val} = ${$max};
${$alt} = ${$val} * $ratio;
}
}
return("<img src='{$location}' alt='{$alt}' width='{$w}' height='{$h}' title='{$title}'/>");
}
}
//enf of get images
You are almost done. Hang on! Next is to show the images on your template. In the submit_step2.tpl file, add the following html code to somewhere you think appropriate:
Because it has been too long since I coded for this mod, I forgot much of it. If you have any question, please post it in this thread so that I or someone else can figure out together.
For you to see the mod in action, you can take a look at my website
DealsPiggy / Hot Deals or see this script stand-alone here:
http://www.dealspiggy.com/getimgs.php
Good luck!
09-25-2008, 01:00 PM
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