第十五週整合題<?php
$command=$_POST["command"]; if ($command=="" || $command=="返回") {
display_add_page();
} if ($command=="新增") {
$subject=trim($_POST["subject"]);
$content=trim($_POST["content"]);
if ($subject=="" || $content=="") display_add_page();
else {
$fp=fopen("./news.txt","a");
$content=str_replace("\r\n","<br>",$content);
fputs($fp,$subject); fputs($fp,"\r\n");
fputs($fp,$content); fputs($fp,"\r\n");
display_add_page();
}
}
if ($command=="查詢") {
display_read_news();
display_search_page(0);
} if ($command=="下一筆") {
display_read_news();
$cnt=$_POST["cnt"]; $cnt++;
display_next_page($cnt);
} function display_read_news() {
global $subject_list,$content_list;
$fp=fopen("./news.txt","r");
$cnt=0;
while (($subject=fgets($fp))!=null) {
$content=fgets($fp);
$subject_list[$cnt]=$subject;
$content_list[$cnt]=$content;
$cnt++;
}
fclose($fp);
}
function display_add_page() {
echo "<center><form action='' method='POST'>
<table border=1 bordercolor=black cellpadding=0 cellspacing=0 width=100%>
<tr><td>公告標題</td><td>
<input type=text size=80 name=subject></td></tr>
<tr><td>公告內容</td><td>
<textarea name='content' rows=5 cols=80></textarea></td></tr>
</table>
<input type='submit' name='command' value='新增' />
<input type='submit' name='command' value='查詢' />
</form></center>";
}
function display_search_page($cnt) {
global $subject_list,$content_list;
$subject=$subject_list[$cnt];
$content=$content_list[$cnt];
echo "<center><form action='' method='POST'>
<table border=1 bordercolor=black cellpadding=0 cellspacing=0 width=100%>
<tr><td>公告標題</td><td>$subject</td></tr>
<tr><td>公告內容</td><td>$content</td></tr>
</table>
<input type='submit' name='command' value='下一筆' />
<input type='submit' name='command' value='返回' />
<input type='hidden' name='cnt' value='$cnt' />
</form></center>";
} function display_next_page($cnt) {
global $subject_list,$content_list;
$subject=$subject_list[$cnt];
$content=$content_list[$cnt];
if ($subject=="") {
echo "<center>已達終點</center>"; return;
}
echo "<center><form action='' method='POST'>
<table border=1 bordercolor=black cellpadding=0 cellspacing=0 width=100%>
<tr><td>公告標題</td><td>$subject</td></tr>
<tr><td>公告內容</td><td>$content</td></tr>
</table>
<input type='submit' name='command' value='下一筆' />
<input type='submit' name='command' value='返回' />
<input type='hidden' name='cnt' value='$cnt' />
</form></center>";
} ?>
作業 :請增加上一筆與最末筆
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