Php应用实例－－分页的技巧

分页|技巧|应用实例

一，三个函数，一个观念：函数都有输入输出。
１，获取资料表的函数GetRows()：

function GetRows( $Database, $Query ) {
mysql_connect ("ftp", "root", "");
$db = mysql_select_db( $Database );
if ( ! $db ) {
echo "礚猭秨币 kjsql 戈畐叫絋﹚眤竒ミ kjsql 戈畐!";
exit;
}

$rows = mysql_query( $Query );
if ( ! $rows ) {
echo "SQL 岿粇礚猭匡戈!";
exit;
}
return $rows;
}
?>
$rows是函数的输出，作为存取资料的依据。
２，连结数据库的函数ConnectDatabase():
function ConnectDatabase( $Database ) {
mysql_connect ("ftp", "root", "");
$db = mysql_select_db( $Database );
if ( ! $db ) {
echo "礚猭秨币 kjsql 戈畐叫絋﹚眤竒ミ kjsql 戈畐!";
exit;
}
}
?>
３，显示一页的函数ShowOnePage():

function ShowOnePage( $rows, $No ) {
mysql_data_seek( $rows, $No );

echo "

";
echo "";
while ( $field = mysql_fetch_field($rows) ) {
echo "";
}
echo "";

for ( $I=1; $I if ( $row = mysql_fetch_row($rows) ) {
echo "

";
for ( $K=0 ; $K echo "";
}
echo "";
}
}
echo "

No.	" . $field->name . "
" . ($No + $I) . "	" . $row[$K] . "

";
}
?>
输出为一张表格。

二，分页的技巧
Version１，只显示１到１０条记录：

function ShowOnePage( $rows, $No ) {
mysql_data_seek( $rows, $No );

echo "

";
echo "";
while ( $field = mysql_fetch_field($rows) ) {
echo "";
}
echo "";

for ( $I=1; $I if ( $row = mysql_fetch_row($rows) ) {
echo "

";
for ( $K=0 ; $K echo "";
}
echo "";
}
}
echo "

No.	" . $field->name . "
" . ($No + $I) . "	" . $row[$K] . "

";
}
?>

pagev1.php3, Version 1 - だмォ

---

include("../db.func");
$rows = GetRows( "kjsql", "Select * From stock" );

ShowOnePage( $rows, 0 );
?>

---

相关说明：1,$No参数，由于显示某一页，利用此参数指定该页的第一笔资料；
　　　　　2,设定目前资料录的位子：mysql_data_seek($rows,$No);
3,判断是否还有资料录：if ($row=mysql_fetch_row($rows)).

Version2，可以在IE位置栏输入页次：

function ShowOnePage( $rows, $No ) {
mysql_data_seek( $rows, $No );

echo "

";
echo "";
while ( $field = mysql_fetch_field($rows) ) {
echo "";
}
echo "";

for ( $I=1; $I if ( $row = mysql_fetch_row($rows) ) {
echo "

";
for ( $K=0 ; $K echo "";
}
echo "";
}
}
echo "

No.	" . $field->name . "
" . ($No + $I) . "	" . $row[$K] . "

";
}
?>

pagev2.php3, Version 2 - だмォ

---

include("../db.func");
$rows = GetRows( "kjsql", "Select * From stock" );

$num = mysql_num_rows($rows);
$Pages = intval(($num - 1) / 10) + 1;

if ( $Page if ( $Page > $Pages ) $Page = $Pages;

ShowOnePage( $rows, ($Page-1)*10 );
?>

---

Version３，页次的浏览：

function ShowOnePage( $rows, $No ) {
mysql_data_seek( $rows, $No );

echo "

";
echo "";
while ( $field = mysql_fetch_field($rows) ) {
echo "";
}
echo "";

for ( $I=1; $I if ( $row = mysql_fetch_row($rows) ) {
echo "

";
for ( $K=0 ; $K echo "";
}
echo "";
}
}
echo "

No.	" . $field->name . "
" . ($No + $I) . "	" . $row[$K] . "

";
}
?>

pagev3.php3, Version 3 - Ω聅凝

---

include("../db.func");
$rows = GetRows( "kjsql", "Select * From stock" );

$num = mysql_num_rows($rows);
$Pages = intval(($num - 1) / 10) + 1;

if ( $Page if ( $Page > $Pages ) $Page = $Pages;

ShowOnePage( $rows, ($Page-1)*10 );
?>

---

Version 4，完成版：

function ShowOnePage( $rows, $No ) {
mysql_data_seek( $rows, $No );

echo "

";
echo "";
while ( $field = mysql_fetch_field($rows) ) {
echo "";
}
echo "";

for ( $I=1; $I if ( $row = mysql_fetch_row($rows) ) {
echo "

";
for ( $K=0 ; $K echo "";
}
echo "";
}
}
echo "

No.	" . $field->name . "
" . ($No + $I) . "	" . $row[$K] . "

";
}
?>

pagev4.php3, だ聅凝(ЧΘ)

---

include("../db.func");
$rows = GetRows( "kjsql", "Select * From stock" );

$num = mysql_num_rows($rows);
$Pages = intval(($num - 1) / 10) + 1;

if ( $Page if ( $Page > $Pages ) $Page = $Pages;

ShowOnePage( $rows, ($Page-1)*10 );
?>

---

Method=GET>

if ( $Page 1 ) { // 狦ぃ琌材
echo "材";
echo "";
}

if ( $Page $Pages ) { // 狦ぃ琌程
echo "";
echo "程";
}
?>
块Ω:
Ω:/