Created
April 27, 2010 05:52
-
-
Save wrightlabs/380379 to your computer and use it in GitHub Desktop.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <?php | |
| // Author: John Wright | |
| // Website: http://johnwright.me/blog | |
| // This code is live @ | |
| // http://johnwright.me/code-examples/sparql-query-in-code-rest-php-and-json-tutorial.php | |
| function getUrlDbpediaAbstract($term) | |
| { | |
| $format = 'json'; | |
| $query = | |
| "PREFIX dbp: <http://dbpedia.org/resource/> | |
| PREFIX dbp2: <http://dbpedia.org/ontology/> | |
| SELECT ?abstract | |
| WHERE { | |
| dbp:".$term." dbp2:abstract ?abstract . | |
| FILTER langMatches(lang(?abstract), 'en') | |
| }"; | |
| $searchUrl = 'http://dbpedia.org/sparql?' | |
| .'query='.urlencode($query) | |
| .'&format='.$format; | |
| return $searchUrl; | |
| } | |
| function request($url){ | |
| // is curl installed? | |
| if (!function_exists('curl_init')){ | |
| die('CURL is not installed!'); | |
| } | |
| // get curl handle | |
| $ch= curl_init(); | |
| // set request url | |
| curl_setopt($ch, | |
| CURLOPT_URL, | |
| $url); | |
| // return response, don't print/echo | |
| curl_setopt($ch, | |
| CURLOPT_RETURNTRANSFER, | |
| true); | |
| /* | |
| Here you find more options for curl: | |
| http://www.php.net/curl_setopt | |
| */ | |
| $response = curl_exec($ch); | |
| curl_close($ch); | |
| return $response; | |
| } | |
| function printArray($array, $spaces = "") | |
| { | |
| $retValue = ""; | |
| if(is_array($array)) | |
| { | |
| $spaces = $spaces | |
| ." "; | |
| $retValue = $retValue."<br/>"; | |
| foreach(array_keys($array) as $key) | |
| { | |
| $retValue = $retValue.$spaces | |
| ."<strong>".$key."</strong>" | |
| .printArray($array[$key], | |
| $spaces); | |
| } | |
| $spaces = substr($spaces, 0, -30); | |
| } | |
| else $retValue = | |
| $retValue." - ".$array."<br/>"; | |
| return $retValue; | |
| } | |
| $term = "Honda_Legend"; | |
| $requestURL = getUrlDbpediaAbstract($term); | |
| $responseArray = json_decode( | |
| request($requestURL), | |
| true); | |
| ?> | |
| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" | |
| "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> | |
| <html xmlns="http://www.w3.org/1999/xhtml"> | |
| <head> | |
| <title>Using SPARQL in code: REST, PHP and JSON [EXAMPLE CODE]</title> | |
| <meta http-equiv="content-type" content="text/html; charset=utf-8" /> | |
| </head> | |
| <body> | |
| <h1>DBPedia Abstract for | |
| <?php echo $term ?></h1> | |
| <h3>Request URL:</h3> | |
| <?php echo $requestURL ?> | |
| <br/> | |
| <h3>Parsed Response: </h3> | |
| <?php echo printArray($responseArray); ?> | |
| <br/> | |
| <h3>Abstract: </h3> | |
| <?php echo $responseArray["results"] | |
| ["bindings"][0] | |
| ["abstract"]["value"] ?> | |
| <br/> | |
| <h3>Source Code For This Page</h3> | |
| <script src="http://gist.github.com/380379.js"></script> | |
| </body> | |
| </html> | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment