本文介绍了当不在对象上下文中时使用$ this的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在创建一个函数来显示博客。所以我做了一个显示博客功能,但它一直给使用$这当不在对象上下文错误
I'm creating a function to show blog's. So I made a show blog function but it keeps giving "Using $this when not in object context" error
Class Blog{
public function getLatestBlogsBig($cat = null){
$sqlString = "SELECT blog_id FROM jab_blog";
if($cat != null)
$sqlString .= " WHERE blog_cat = " . $cat;
$sqlString .= " ORDER BY blog_id DESC LIMIT 5";
$blog = mysql_query($sqlString);
while($id = mysql_result($blog,"blog_id")){
$this->showBlog($id); //Error is on this line
}
}
function showBlog($id,$small = false){
$sqlString = "SELECT blog_id FROM jab_blog WHERE blog_id=" . $id . ";";
$blog = mysql_query($sqlString);
if($small = true){
echo "<ul>";
while($blogItem = mysql_fetch_array($blog)){
echo '<a href="' . $_SESSION['JAB_LINK'] . "blog/" . $blogItem['blog_id'] . "/" . SimpleUrl::toAscii($blogItem['blog_title']) .'">' .
$blogItem['blog_title'] . '</a></li>';
}
echo "</ul>";
}else{
while($blogItem = mysql_fetch_array($blog)){
?>
<div class="post">
<h2 class="title"><a href="<?php echo $_SESSION['JAB_LINK'] . "blog/" . $blogItem['blog_id'] . "/" . SimpleUrl::toAscii($blogItem['blog_title']);?>"><?php echo $blogItem['blog_title'];?></a></h2>
<p class="meta"><span class="date">The date implement</span><span class="posted">Posted by <a href="#">Someone</a></span></p>
<div style="clear: both;"> </div>
<div class="entry">
<?php echo $blogItem['blog_content'];?>
</div>
</div>
<?php
}
}
}
}
推荐答案
如何调用 getLatestBlogsBig
?如果你在静态上下文中调用它( Blog :: getLatestBlogsBig()
),那么 $ this
t被解析成一个对象。您需要在 Blog
类的实例上调用 getLatestBlogsBig
方法。
How are you calling getLatestBlogsBig
? If you're calling it in a static context (Blog::getLatestBlogsBig()
), then $this
can't be resolved into an object. You need to call the getLatestBlogsBig
method on an instance of the Blog
class.
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