PHP文件保存数据输出的例子
这个是一个动态导航的demo，后台可以添加标题，链接，图片，前台显示导航，没有用到数据库，利用文件函数实现，有时候还是很有用的。假如这个文件是index.php，那么通过index.php?admin=123456就可以进入管理后台，密码可以自行修改
前台界面
后台界面
代码如下：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>文件保存数据</title>
<meta name="keywords" content="">
<meta name="description" content="">
<meta name="viewport" content="initial-scale=1,maximum-scale=1, minimum-scale=1">
<script src="https://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
</head>
<body>
<?php
if(!file_exists('data.txt')) touch('data.txt');
$pwd = '123456'; // 这是密码
$isAdmin = 0;
if ($_REQUEST['admin'] == $pwd) {
$isAdmin = 1;
if (isset($_POST['dosubmit'])) {
$titles = $_POST['titles'];
$urls = $_POST['urls'];
$imgs = $_POST['imgs'];
$navStr = '';
foreach ($titles as $k => $v) {
if ($v) {
$navStr .= $v . '|' . $urls[$k] . '|' . $imgs[$k] . "\n";
}
}
file_put_contents('data.txt', $navStr);
}
$navs = file('data.txt');
$navHtml = '';
foreach($navs as $v) {
list($t, $u, $i) = explode('|', trim($v));
$navHtml .= "
<p class = 'f-item'>
<input class = 'f-input' type = 'text' name = 'titles[]' value = '{$t}' placeholder='标题'/>
<input style = 'width: 250px;' class = 'f-input' type = 'text' name = 'urls[]' value = '{$u}' placeholder='链接'/>
<input style = 'width: 250px;' class = 'f-input' type = 'text' name = 'imgs[]'' value = '{$i}' placeholder='图片'/>
</p>
";
}
}
?>
<?php
if ($isAdmin):
?>
<style>
.adminbox {
font-size: 14px;
padding: 10px;
border: solid 1px #ccc;
width: 800px;
margin: 10px auto;
}
.adminbox p {
margin-bottom: 10px;
}
.adminbox .f-item {
margin-bottom: 20px;
}
.f-input {
padding: 5px;
}
.dosubmit {
width: 100px;
background: #F00;
color: #FFF;
line-height: 30px;
}
</style>
<div class="adminbox">
<form method="post" action="">
<p><b>菜单设置</b></p>
<p style="color:red;">请注意，如果想要删除某个菜单，那么就删掉标题即可</p>
<div class="f-box">
<?= $navHtml; ?>
<p class="f-item">
<input class="f-input" type="text" name="titles[]" value="" placeholder="标题"/>
<input style="width: 250px;" class="f-input" type="text" name="urls[]" value="" placeholder="链接"/>
<input style="width: 250px;" class="f-input" type="text" name="imgs[]" value="" placeholder="图片"/>
</p>
</div>
<p>
<input type="submit" class="dosubmit" name="dosubmit" value="提交"/>
<a href="javascript:" onclick="addrow();">新增一行</a>
</p>
</form>
</div>
<script>
function addrow() {
$('.f-box').append(`
<p class = "f-item">
<input class = "f-input" type = "text" name = "titles[]" value = "" placeholder="标题"/>
<input style = "width: 250px;" class = "f-input" type = "text" name = "urls[]" value = "" placeholder="链接"/>
<input style = "width: 250px;" class = "f-input" type = "text" name = "imgs[]" value = "" placeholder="图片"/>
</p>
`);
}
</script>
<?php
else:
$navs = file('data.txt');
$navHtml = '';
foreach ($navs as $v) {
list($t, $u, $i) = explode('|', trim($v));
$navHtml .= "<div style = 'float: left;border: solid 1px #DCDCDC;width: 150px; text-align: center; margin-right: 20px;'><a href='{$u}'><img src='{$i}' style = 'width: 80px;height: 40px;'><p>{$t}</p></a></div>";
}
?>
<div class = "main">
<?=$navHtml;?>
</div>
<?php
endif;
?>
</body>
</html>
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