如何从echo（functions.php）中取出锚元素并将其放到body（index.php）？ [英] How to take out the anchor element from echo (functions.php) and place it to body (index.php)?
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问题描述
如何从echo（functions.php）中取出锚元素并将其放置到body（index.php）？
PS：新手在这里，大约两周前试图了解HTML，CSS，Javascript和PHP ..想象一下我到目前为止学到的东西，请不要让它难以理解..只需写下来:-)
谢谢。
How to take out the anchor element from echo (functions.php) and place it to body (index.php)? PS: Newbie here guys, just trying to understand about HTML, CSS, Javascript and PHP about 2 weeks ago.. just imagine what i learned so far, please don't make it difficult to understand.. just write it :-) Thanks.
<!--index.php-->
<!doctype html>
<?php include ("functions/functions.php"); ?>
<html>
<head>
<link rel="stylesheet" href="styles/style.css" type="text/css" />
</head>
<body>
<ul id="cats">
<?php getCats(); ?>
</ul>
</body>
</html>
//functions.php
<?php
$con = mysqli_connect("localhost","root","","justLearning");
if (mysqli_connect_errno())
{
echo "The connection was not established: " . mysqli_connect_error();
}
function getCats(){
global $con;
$get_cats = "select * from categories";
$run_cats = mysqli_query($con, $get_cats);
while ($row_cats=mysqli_fetch_array($run_cats)){
$cat_id = $row_cats['cat_id'];
$cat_title = $row_cats['cat_title'];
echo "<a href='index.php?cat=$cat_id'>$cat_title</a>";
}
}
?>
推荐答案
您忘了< li> ;< / li> 在您的代码中
您需要学习返回一个数组并使用foreach（）：
You need to learn to return an array and to use foreach():
<!doctype html>
<?php include_once("functions/functions.php"); ?>
<html>
<head>
<link rel="stylesheet" href="styles/style.css" type="text/css" />
</head>
<body>
<ul id="cats">
<?
$cats = getCats();
foreach($cats as $cat){
echo "<li><a href='index.php?cat=$cat[cat_id]'>$cat[cat_title]</a></li>";
}
?>
<ul>
</body>
</html>
function getCats(){
global $con;
$get_cats = "select * from categories";
$run_cats = mysqli_query($con, $get_cats);
while ($row_cats=mysqli_fetch_array($run_cats)){
$cats[]=$row_cats;
}
return $cats;
}
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