Php Programming Code Examples
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Page Lister Class
Page Lister Class
<?php
class mysql_pager {
// define properties
var $page;
var $result;
var $results_per_page = 3;
var $total_pages;
/*
Define the methods
1st method is the constructor, which has the same name
as the class and is called on every instantiation of the class
pass in the query result handle, current page number and integer how many results per page
like: $f->mysql_pager($result, 1, 15);
*/
function mysql_pager( $result, $current_page, $results_per_page ) {
if(!$result){ # Bogus Query, or mysqld isn't running...
echo "<div align=center>Either the database is down, or the query was invalid.</div>\n";
return;
}
$this->result = $result;
if(!$current_page || $current_page < 0)
$this->page = 1;
else $this->page = $current_page;
if(!empty($results_per_page))
$this->results_per_page = $results_per_page;
$numrows = @mysql_num_rows($this->result);
if(!$numrows) {
echo "<div align=center>No results for that query.</div>\n";
return;
}
$this->total_pages = ceil($numrows / $this->results_per_page);
# how many pages you WILL get.
} // end constructor function
function print_paged_results() {
/*
echo "Current Page: ". $this->page ."<br>".
"Results per Page: ". $this->results_per_page ."<br>";
*/
echo "<table border=0 align=center>\n";
$start = ($this->page - 1) * $this->results_per_page;
mysql_data_seek($this->result, $start); #Moves the pointer to right row
$x = 0;
for($i = 1; $i <= $this->results_per_page && $row = @mysql_fetch_array($this->result); $i++) {
if($x++ & 1) $bgcolor = "#F2F2FF";
else $bgcolor = "#EEEEEE";
echo "<tr bgcolor=$bgcolor><td>". $row["lastactiondate"] . "</td></tr>";
// edit this part to spit out whatever html you want
} // end for loop
echo "</table>\n";
} // end function print_paged_results
function print_navigation() {
global $PHP_SELF;
echo "<div align=center>";
for($i = 1; $i <= $this->total_pages; $i++) { #loop to print << 1 2 3... $total_pages >>
if($i == 1 && $this->page > 1) #Prints the << first to goto the previous page (not on page 1)
echo "<a href=\"$PHP_SELF?page=".($this->page - 1)."\" onMouseOver=\"status='Previous Page';return true;\" onMouseOut=\"status=' ';return true;\">« </a>";
if($i == $this->page) #Doesn't print a link itself, just prints page number
echo "<font color=\"#ff3333\"> $i </font>";
if($i != $this->page) #Other links that aren't this page go here
echo "<a href=\"$PHP_SELF?page=$i\" onMouseOver=\"status='Go to Page $i';return true;\" onMouseOut=\"status=' ';return true;\"> $i </a>";
if($i == $this->total_pages && $this->page != $this->total_pages) # Link for next page >> (not on last page)
echo "<a href=\"$PHP_SELF?page=".($this->page + 1)."\" onMouseOver=\"status='Go to the Next Page';return true;\" onMouseOut=\"status=' ';return true;\"> »</a>";
} // end for
echo "</div>\n";
} // end function print_navigation
} // end class definition
/*
mysql_connect($server, $uname, $pass );
mysql_select_db("$db");
$result= @mysql_query("SELECT * FROM table");
$p = new mysql_pager( $result, $page, 10 );
// the variable $page will be created by the output and passed back
// in as a GET var when you click any of the navigation links
$p->print_navigation();
$p->print_paged_results();
$p->print_navigation();
}
*/
?>
