Petitionsunterschriften Wien

gistfile1.php

<?php

echo getNumberOfPetitionSignatures("446def6e128c4f199ddfdce70c599775"), "\n";
// oder
echo getNumberOfPetitionSignaturesCached("446def6e128c4f199ddfdce70c599775"), "\n";

function getNumberOfPetitionSignaturesCached($id) {
	
	// aktuelles Verzeichnis muss schreibbar sein, sonst Pfad ändern
	$cache = __DIR__ . "/unterschriften-$id.txt";
	
	// 300s = 5 minuten
	if (file_exists($cache) && time() - filemtime($cache) < 300) return file_get_contents($cache);
	
	file_put_contents($cache, $nr = getNumberOfPetitionSignatures($id));
	return $nr;
}

function getNumberOfPetitionSignatures($id) {
	$f = file_get_contents("https://www.wien.gv.at/petition/online/PetitionDetail.aspx?PetID=" . $id);
	$p = strpos($f, "Anzahl bisheriger");
	if ($p !== false) {
		$p = strpos($f, ">", $p);
		$q = strpos($f, "</tr", $p);
		$txt = strip_tags(substr($f, $p, $q - $p));
		if (preg_match("#[0-9]+#", $txt, $m)) {
			return $m[0];
		}
	}
	
	return "Unbekannt";
}