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- Code:
An easy page browser ( prev 6 7 8 9 10 next )
<?
I've had some requests for making it support MSSQL (MSSQL doesn't support the LIMIT
clause) But I'm sure there is a way to get around it :) Keep checking this page...
-----------
Description
-----------
The function returns an array of 3 values as described below:
VALUE 1 [0]: Returns a string that can be appended to your SQL query so that the
correct block of rows can be returned. Eg. " LIMIT 10, 20"
VALUE 2 [1]: Returns an html string that gives the user an indication of which rows
he's currently browsing. Eg. 11-20
VALUE 3 [2]: Returns an html navigation bar needed for navigating through the total
result returned Eg. Page: << 6 7 8 9 10 >>
---------
Arguments
---------
The first 4 arguments are declared/assigned by you while the last 3 are done when
you start using the navigation bar generated by the function (See 'Usage' below).
totalrows - The TOTAL amount of rows returned by your executed SQL statement
numLimit - The amount of page numbers you'd like displayd in your navigation bit
Eg. '4' would display "Page: 1 2 3 4 Next 4 >>"
amm - The amount of rows returned per page (for the SQL string to append)
queryStr - If you'd like extra vars to be passed to that page Eg. "&name=value"
There are also 3 variables inside the function you can change if you'd like the
navigation bar to look a little different (larrow,rarrow,wholePiece).
-----
Usage
-----
See 'Usage' at the end of this document.
*/
function pageBrowser($totalrows,$numLimit,$amm,$queryStr,$numBegin,$begin,$num) {
$larrow = " << Prev ".$numLimit." "; //You can either have an image or text, eg. Previous
$rarrow = " Next ".$numLimit." >> "; //You can either have an image or text, eg. Next
$wholePiece = "Page: "; //This appears in front of your page numbers
if ($totalrows > 0) {
$numSoFar = 1;
$cycle = ceil($totalrows/$amm);
if (!isset($numBegin) || $numBegin < 1) {
$numBegin = 1;
$num = 1;
}
$minus = $numBegin-1;
$start = $minus*$amm;
if (!isset($begin)) {
$begin = $start;
}
$preBegin = $numBegin-$numLimit;
$preStart = $amm*$numLimit;
$preStart = $start-$preStart;
$preVBegin = $start-$amm;
$preRedBegin = $numBegin-1;
if ($start > 0 || $numBegin > 1) {
$wholePiece .= "<a href='?num=".$preRedBegin
."&numBegin=".$preBegin
."&begin=".$preVBegin
.$queryStr."'>"
.$larrow."</a>\n";
}
for ($i=$numBegin;$i<=$cycle;$i++) {
if ($numSoFar == $numLimit+1) {
$piece = "<a href='?numBegin=".$i
."&num=".$i
."&begin=".$start
.$queryStr."'>"
.$rarrow."</a>\n";
$wholePiece .= $piece;
break;
}
$piece = "<a href='?begin=".$start
."&num=".$i
."&numBegin=".$numBegin
.$queryStr
."'>";
if ($num == $i) {
$piece .= "</a><b>$i</b><a>";
} else {
$piece .= "$i";
}
$piece .= "</a>\n";
$start = $start+$amm;
$numSoFar++;
$wholePiece .= $piece;
}
$wholePiece .= "\n";
$wheBeg = $begin+1;
$wheEnd = $begin+$amm;
$wheToWhe = "<b>".$wheBeg."</b> - <b>";
if ($totalrows <= $wheEnd) {
$wheToWhe .= $totalrows."</b>";
} else {
$wheToWhe .= $wheEnd."</b>";
}
$sqlprod = " LIMIT ".$begin.", ".$amm;
} else {
$wholePiece = "Sorry, no records to display.";
$wheToWhe = "<b>0</b> - <b>0</b>";
}
return array($sqlprod,$wheToWhe,$wholePiece);
}
/*
| Usage |
NOTE!: This is just an example and WON'T WORK if you include
this in your code, comment it out or delete it :)
*/
$criterea = " WHERE column=value AND column_2=value_2";
$sql = "SELECT COUNT(*) AS totalrows FROM table".$criterea;
//get the total amount of rows returned
$arr = mysql_fetch_array(mysql_query($sql));
/*
Call the function:
I've used the global $_GET array as an example for people
running php with register_globals turned 'off' :)
*/
$navigate = pageBrowser($arr[totalrows],10,10,"&name=value",$_GET[numBegin],$_GET[begin],$_GET[num]);
//execute the new query with the appended SQL bit returned by the function
$sql = "SELECT * FROM table".$criterea.$navigate[0];
$rs = mysql_query($sql);
//the indication of which rows are being browsed. Eg. listing 1-10 of 100 results.
echo "<p>Listing ".$navigate[1]." of ".$totalrows." results.</p>";
//the navigation bar returned by the function
echo "<p>".$navigate[2]."</p>";
//loop and display the limited records being browsed
while ($arr = mysql_fetch_array($rs)) {
echo $arr[column_1]." ".$arr[column_2]."<br>";
}
//the navigation bar at the bottom again
echo "<p>".$navigate[2]."</p>";
/*
I hope this can come in handy :)
*/
?>
:)aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa