Created
June 4, 2012 01:21
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Extract URLs from WordPress post
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<?php | |
/* | |
Extracts URLs from post content, stores in post_meta in imploded array | |
RegEX help from: http://ask.amoeba.co.in/regular-expression-in-php-extract-link-text-href/ | |
*/ | |
add_action('save_post','extract_urls'); | |
function extract_urls($post_id){ | |
if ( !wp_is_post_revision( $post_id ) ) { | |
$content_post = get_post($my_postid); | |
preg_match_all("/\<a.*href=\"(.*?)\".*?\>(.*)\<\/a\>+/", stripslashes($content_post->post_content), $matches, PREG_SET_ORDER); | |
if(!empty($matches)){ | |
delete_post_meta($post_id,'content_urls'); | |
foreach($matches as $url){ | |
$url[] = getPageTitle($url[1]); | |
$value = implode("%%GG$$%%", $url); | |
add_post_meta($post_id,'content_urls',$value); | |
} | |
} else { | |
delete_post_meta($post_id,'content_urls'); | |
//update_post_meta($post_id,'content_urls','failed to find urls'); | |
} | |
} | |
} | |
// get remote page title | |
function getPageTitle($Url){ | |
$ch = curl_init(); | |
curl_setopt($ch,CURLOPT_URL,$Url); | |
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1); | |
$data = curl_exec($ch); | |
curl_close($ch); | |
if(strlen($data)>0){ | |
preg_match("/\<title\>(.*)\<\/title\>/",$data,$title); | |
return $title[1]; | |
} | |
} | |
function lipson_return_urls($post_id){ | |
$urls = get_post_meta($post_id,'content_urls'); | |
foreach($urls as $key=>$val){ | |
$return[] = explode('%%GG$$%%',$val); | |
} | |
if(isset($return)){ | |
return $return; | |
} else { | |
return null; | |
} | |
} | |
?> |
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