Count Beiträge als Kategorien PHP & MYSQL

Question

ich diesen Code habe ...

$lesson = mysql_query("SELECT * FROM categories WHERE gr='exrcs' ORDER BY title"); 
$flesson = mysql_fetch_array($lesson); 
do { 
    printf("<a href='exrcs?cat=%s'>%s</a>",$flesson['id'],$flesson['title']); 
    } while ($flesson = mysql_fetch_array($lesson)); 

Dieser Code wird "HTML, CSS, PHP" und andere ...

Aber ich will diese sein " HTML (2), CSS (14), PHP(8) " und andere ...

Hier (2),(14),(8) Menge Beiträge über Kategorien

Answer 1

Verwenden Anzahl und Gruppe von

"SELECT cat as title , count(*) FROM categories 
WHERE gr='exrcs' group by title ORDER BY title" 

Answer 2

aktualisieren Anfrage:

SELECT title, count(id) total FROM categories WHERE gr='exrcs' group by title ORDER BY title 

oder

SELECT concat(title,' (', count(id) ,')') as title FROM categories WHERE gr='exrcs' group by title ORDER BY title 

Answer 3

"SELECT CONCAT(C.title,'(',COUNT(*),')') FROM categories C INNER JOIN post P ON C.ID= P.cat_id GROUP BY c.title"