PHP：str_word_count打印單詞和重複單詞的號碼

Question

我想從最近的50個帖子中找到標籤並用多少個標籤重複打印數量？

到目前爲止我打印了標籤。我怎樣才能打印「多少標籤重複」的數量。

$posts = mysql_query("SELECT * FROM posts ORDER BY id desc Limit 50"); 

while($fetch_tags = mysql_fetch_assoc($posts)) 
{ 
    $tags_array = str_word_count($fetch_tags['tags'],1); 
} 

foreach($tags_array as $tag) 
{ 
    echo $tag .'<br/>'; // ex: html</br/>php</br/> ...etc. 
} 

我希望輸出像$tag:$number<br/> ...

Answer 1

你可以讀到這樣的數組：

$posts = mysql_query("SELECT * FROM posts ORDER BY id desc Limit 50"); 
$results = array(); 

while($fetch_tags = mysql_fetch_assoc($posts)) 
{ 
    $tags_array = str_word_count($fetch_tags['tags'],1); 

    foreach($tags_array AS $index => $tag) { 
     if (!isset($results[$tag])) $results[$tag] = 1; // First occurrence 
     else $results[$tag] += 1; // Add one occurrence 
    } 
} 

// Now that we counted, print the results 
foreach($results AS $tag => $number) 
{ 
    echo "{$tag} : {$number}<br />\n"; 
}