php / mysql result in pages
for example i have in database 50 rows, how i can get mysql results in pages, 5 results on each page, and display pages ,like : [1] , 2 , 3 , 4 .. 10 if page 5 => 3 , 4 , [5], 6, 7 .. 10, and do this without r开发者_C百科efreshing all content of page.
Use the SQL LIMIT
and OFFSET
clauses. Example:
First query:
SELECT col1,..,colN FROM table WHERE ... LIMIT 10;
Next query:
SELECT col1,..,colN FROM table WHERE ... LIMIT 10 OFFSET 10;
etc. Build it programmatically depending on what page they're on, multiplying their page number with the offset and results-per-page.
$page = 0;
$rrp = 5; // Rows per page
$res = mysql_query ("SELECT count(*) FROM table");
$maxrows = (int)@mysql_result($res, 0);
$limit = ($page*$rrp).", $rrp";
$res = mysql_query ("SELECT * FROM table LIMIT $limit");
$pages = ceil($maxrows/$rpp);
echo "<a href='?pg=0'>first</a>";
for ($i=0; $i<=$pages; $i++) {
echo "<a href='?pg=$i'>".($i+1)."</a>";
}
echo "<a href='?pg=$pages'>last</a>";
Thats very basic pagination.
The formatting of how the page number appears is up to you.
However, loading the pages dynamically is a different story.
For that you will be required to use Ajax. Thats where you load external content through JavaScript to update the current page.
Just do a search on google for Pagination for what ever language or framework you are using. The answer to your questions is way to long to explain here fully.
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