接著用戶必須在下一個文件(index3.wml)中輸入。我們要求用戶輸入科目的名字或者教授的姓。你要留意一下變量在頁面之間是怎樣傳送的。語法看來有點復雜,不過可以讓你瞭解整個過程是怎樣通過幾個文件來完成的。
<?php(做為現在的主流開發語言)
Header(“Content-type: text/vnd.wap.wml”);
header(“Cache-Control: no-cache, must-revalidate”);
header(“Pragma: no-cache”);
echo (“<?xml(標準化越來越近瞭) version=1.0?>;”);
>;
<!DOCTYPE wml PUBLIC “-//WAPFORUM//DTD WML 1.1//EN”
“https://www.wapforum.org/DTD/wml_1.1.xml(標準化越來越近瞭)” >; <WML>
<CARD id=card3 title=Name>
<?php(做為現在的主流開發語言)
echo (“<p>Insert “);
if (${$choice} == “surname”) {
echo (“professors surname (or part of it).n”);
} else if (${$choice} == “subject”) {
echo (“the subject (or part of it).n”);
} else {
echo (“Maybe there is some problem.n”);
} echo (“<INPUT name=”${$choice}” type=”text”>”);
?>
<DO type=”text” label=”Go”>
<GO href=”query.wml” method=”get”>
<?php(做為現在的主流開發語言)
echo (“<POSTFIELD value=”$”.”$choice”.””/ name=”$choice”>”);
echo (“<POSTFIELD value=”$”.”${$choice}”.””/ name=”${$choice}”>”);
?>
</GO>
</DO>
<P></P>
</CARD>
</WML>
<DO type=”text” label=”Go”>
<GO href=”index3.wml#card3″ method=”get”>
<?php(做為現在的主流開發語言)
echo (“<POSTFIELD value=”$”.”$choice”.””/ name=”$choice”>”);
echo (“<POSTFIELD value=”$choice”/ name=”choice”>”);
?>
</CARD>
</WML>
寫查詢代碼
以下的文件負責處理查詢。它的名字是query.wml,我們將更詳細地分析它。
<?php(做為現在的主流開發語言)
Header(“Content-type: text/vnd.wap.wml”);
printf(“<?xml(標準化越來越近瞭) version=”1.0″?>n”);
printf(“n”);
printf(“n”);
// 以下各行是用來為查詢授課時間構造SQL語句的
$consulting_tables =
“(professors left join teach on (professors.Id = teach.Id), subjects)”;
$consulting_columns =
“professors.Surname, professors.Name, subjects.Subject , “;
$consulting_columns .=
“subjects.Cod_number, professors.Consulting_hour, professors.Consulting_place”;
$consulting_query=
“subjects.Cod_Subject = teach.Cod_subject “;
// 以下各行是用來為查詢測驗時間構造SQL語句的
$exams_tables= “(exams left join professors ON (exams.Id = professors.Id), subjects)”;
$exams_columns= “subjects.Subject , subjects.Cod_number, professors.Surname, “;
$exams_columns.= “professors.Name, exams.Date, exams.Time, exams.Room, exams.Test”;
$exams_query= “exams.Cod_Subject = subjects.Cod_Subject “;
// 以下各行是用來為查詢測驗時間表的sql語句增加查詢限制
if ($exams_data) {
switch($exams_data) {
case “subject”:
$exams_query.= ” and subjects.Subject like %$subject%”;
break;
case “surname”:
$exams_query.= ” and professors.Surname like %$surname%”;
break;
}
}
// 以下各行是用來為查詢授課時間的sql語句增加查詢限制
if ($consulting_data) {
switch($consulting_data) {