消息：试图获取非对象的属性

Question

I have huge delays on my project... I try to understand what is wrong and I can not find a solution. I get on my page these messages

A PHP Error was encountered Severity: Notice Message: Trying to get property of non-object Filename: controllers/help.php Line Number: 243

A PHP Error was encountered Severity: Notice Message: Trying to get property of non-object Filename: controllers/help.php Line Number: 244

A PHP Error was encountered Severity: Notice Message: Trying to get property of non-object Filename: controllers/help.php Line Number: 245

The lines 243, 244, 245 are as follows on my Controllers

I have created a space between the lines 243, 244, 245 for the image posted here

$this->template->write('meta_title',$school_details->title.'-'.$data['site_setting']['site_name'].' School-'.$meta['title'], TRUE);
        $this->template->write('meta_description', $school_details->title.'-'.$data['site_setting']['site_name'].' School-'.$meta['meta_description'], TRUE);
        $this->template->write('meta_keyword', $school_details->title.'-'.$data['site_setting']['site_name'].' School-'.$meta['meta_keyword'], TRUE);

on my URL further down I get also another error which is

A PHP Error was encountered

Severity: Notice Message: Trying to get property of non-object Filename: default/school_detail.php Line Number: 11

A PHP Error was encountered Severity: Notice Message: Trying to get property of non-object Filename: default/school_detail.php Line Number: 14

Now pages 11 to 18 are as follows on my views

<div class="faq_list_div">


            <h3 class="faq_heading_title"><?php echo $school_details->title; ?></h3>

            <div style="padding-top:13px;">
            <?php $content=$school_details->description;
                $content=str_replace('KSYDOU','"',$content);
                $content=str_replace('KSYSING',"'",$content); 

                echo $content; ?>
            </div>

What is happening? The parameters work well (in English) when i use Greek Language is another story although is on UTF8

Answer 1

Are you sure $school_details is an object? If it is not set, or not an object, this error will occur.