Wat is die beste manier om 'n merkerwolk uit 'n skikking te genereer deur h1 tot h6 vir grootte te gebruik?
https://stackoverflow.com/questions/227
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Ek het die volgende skikkings:
$artist = array("the roots", "michael jackson", "billy idol", "more", "and more", "and_YET_MORE");
$count = array(5, 3, 9, 1, 1, 3);
Ek wil 'n merkerwolk genereer wat kunstenaars met 'n hoër nommer in sal hê $count ingesluit in h6 etikette en die laagste ingesluit h1 etikette.
Oplossing
Jy sal ook 'n logaritmiese funksie daarby wil voeg.(Geneem uit tagadelic, my Drupal-module om merkerwolke te skep http://drupal.org/project/tagadelic):
db_query('SELECT COUNT(*) AS count, id, name FROM ... ORDER BY count DESC');
$steps = 6;
$tags = array();
$min = 1e9;
$max = -1e9;
while ($tag = db_fetch_object($result)) {
$tag->number_of_posts = $tag->count; #sets the amount of items a certain tag has attached to it
$tag->count = log($tag->count);
$min = min($min, $tag->count);
$max = max($max, $tag->count);
$tags[$tag->tid] = $tag;
}
// Note: we need to ensure the range is slightly too large to make sure even
// the largest element is rounded down.
$range = max(.01, $max - $min) * 1.0001;
foreach ($tags as $key => $value) {
$tags[$key]->weight = 1 + floor($steps * ($value->count - $min) / $range);
}
Dan in jou aansig of sjabloon:
foreach ($tags as $tag) {
$output .= "<h$tag->weight>$tag->name</h$tag->weight>"
}
Ander wenke
Van die bokant van my kop af...
$artist = array("the roots","michael jackson","billy idol","more","and more","and_YET_MORE");
$count = array(5,3,9,1,1,3);
$highest = max($count);
for (int $x = 0; $x < count($artist); $x++)
{
$normalized = $count[$x] / $highest;
$heading = ceil($normalized * 6); // 6 heading types
echo "<h".$heading.">".$artist[$x]."</h".$heading.">";
}
Miskien is dit 'n bietjie akademies en buite die onderwerp, maar hX Merkers is waarskynlik nie die beste keuse vir 'n merkerwolk nie weens dokumentstruktuur en al daardie soort dinge.
Kan wees spans of 'n ol met toepaslike klaskenmerke (plus 'n paar CSS)?
Het hierdie brokkie al 'n rukkie gebruik, krediet is prism-perfect.net.Gebruik egter nie H-etikette nie
<div id="tags">
<div class="title">Popular Searches</div>
<?php
// Snippet taken from [prism-perfect.net]
include "/path/to/public_html/search/settings/database.php";
include "/path/to/public_html/search/settings/conf.php";
$query = "SELECT query AS tag, COUNT(*) AS quantity
FROM sphider_query_log
WHERE results > 0
GROUP BY query
ORDER BY query ASC
LIMIT 10";
$result = mysql_query($query) or die(mysql_error());
while ($row = mysql_fetch_array($result)) {
$tags[$row['tag']] = $row['quantity'];
}
// change these font sizes if you will
$max_size = 30; // max font size in %
$min_size = 11; // min font size in %
// get the largest and smallest array values
$max_qty = max(array_values($tags));
$min_qty = min(array_values($tags));
// find the range of values
$spread = $max_qty - $min_qty;
if (0 == $spread) { // we don't want to divide by zero
$spread = 1;
}
// determine the font-size increment
// this is the increase per tag quantity (times used)
$step = ($max_size - $min_size)/($spread);
// loop through our tag array
foreach ($tags as $key => $value) {
// calculate CSS font-size
// find the $value in excess of $min_qty
// multiply by the font-size increment ($size)
// and add the $min_size set above
$size = $min_size + (($value - $min_qty) * $step);
// uncomment if you want sizes in whole %:
// $size = ceil($size);
// you'll need to put the link destination in place of the /search/search.php...
// (assuming your tag links to some sort of details page)
echo '<a href="/search/search.php?query='.$key.'&search=1" style="font-size: '.$size.'px"';
// perhaps adjust this title attribute for the things that are tagged
echo ' title="'.$value.' things tagged with '.$key.'"';
echo '>'.$key.'</a> ';
// notice the space at the end of the link
}
?>
</div>
@Ryan
Dit is korrek, maar dit maak eintlik die etikette met die minste getal groter.Hierdie kode is getoets:
$artist = array("the roots","michael jackson","billy idol","more","and more","and_YET_MORE");
$count = array(5,3,9,1,1,3);
$highest = max($count);
for ($x = 0; $x < count($artist); $x++) {
$normalized = ($highest - $count[$x]+1) / $highest;
$heading = ceil($normalized * 6); // 6 heading types
echo "<h$heading>{$artist[$x]}</h$heading>";
}
Hierdie metode is vir SQL/PostgreSQL fanatici.Dit doen die hele werk in die databasis, en dit druk teks met "slugified" skakel.Dit gebruik Doktrine ORM net vir die sql-oproep, ek gebruik nie voorwerpe nie.Gestel ons het 10 groottes:
public function getAllForTagCloud($fontSizes = 10)
{
$sql = sprintf("SELECT count(tag) as tagcount,tag,slug,
floor((count(*) * %d )/(select max(t) from
(select count(tag) as t from magazine_tag group by tag) t)::numeric(6,2))
as ranking
from magazine_tag mt group by tag,slug", $fontSizes);
$q = Doctrine_Manager::getInstance()->getCurrentConnection();
return $q->execute($sql);
}
dan druk jy hulle met een of ander CSS-klas, van .tagranking10 (die beste) tot .tagranking1 (die slegste):
<?php foreach ($allTags as $tag): ?>
<span class="<?php echo 'tagrank'.$tag['ranking'] ?>">
<?php echo sprintf('<a rel="tag" href="/search/by/tag/%s">%s</a>',
$tag['slug'], $tag['tag']
); ?>
</span>
<?php endforeach; ?>
en dit is die CSS:
/* put your size of choice */
.tagrank1{font-size: 0.3em;}
.tagrank2{font-size: 0.4em;}
.tagrank3{font-size: 0.5em;}
/* go on till tagrank10 */
Hierdie metode vertoon alle etikette.As jy baie van hulle het, wil jy waarskynlik nie hê dat jou merkerwolk 'n tag storm.In daardie geval sal jy 'n byvoeg HAVING TO klousule vir jou SQL-navraag:
-- minimum tag count is 8 --
HAVING count(tag) > 7
Dis al
As 'n helper in Rails:
def tag_cloud (strings, counts)
max = counts.max
strings.map { |a| "<span style='font-size:#{((counts[strings.index(a)] * 4.0)/max).ceil}em'>#{a}</span> " }
end
Noem dit vanuit die uitsig:
<%= tag_cloud($artists, $counts) %>
Dit lewer uit <span style='font-size:_em'> elemente in 'n skikking wat omgeskakel sal word na 'n string in die aansig om uiteindelik so weer te gee:
<span style='font-size:3em'>the roots</span>
<span style='font-size:2em'>michael jackson</span>
<span style='font-size:4em'>billy idol</span>
<span style='font-size:1em'>more</span>
<span style='font-size:1em'>and more</span>
<span style='font-size:2em'>and_YET_MORE</span>
Dit sal beter wees om 'n te hê class kenmerk en verwys na die klasse in 'n stylblad soos genoem deur Brendan hierbo.Baie beter as om te gebruik h1-h6 semanties en daar is minder styl bagasie met 'n <span>.
Ek weet dis baie ou post.plaas my siening aangesien dit iemand in die toekoms kan help.
Hier is die tagcloud wat ek op my webwerf gebruik het http://www.vbausefulcodes.in/
<?php
$input= array("vba","macros","excel","outlook","powerpoint","access","database","interview questions","sendkeys","word","excel projects","visual basic projects","excel vba","macro","excel visual basic","tutorial","programming","learn macros","vba examples");
$rand_tags = array_rand($input, 5);
for ($x = 0; $x <= 4; $x++) {
$size = rand ( 1 , 4 );
echo "<font size='$size'>" . $input[$rand_tags[$x]] . " " . "</font>";
}
echo "<br>";
$rand_tags = array_rand($input, 7);
for ($x = 0; $x <= 6; $x++) {
$size = rand ( 1 , 4 );
echo "<font size='$size'>" . $input[$rand_tags[$x]] . " " . "</font>";
}
echo "<br>";
$rand_tags = array_rand($input, 5);
for ($x = 0; $x <= 4; $x++) {
$size = rand ( 1 , 4 );
echo "<font size='$size'>" . $input[$rand_tags[$x]] . " " . "</font>";
}
?>
