PHP:Trying to get property of non-object

Question

There are many posts on this topic but I did not get the required answer. Hence, I am here.

I have been getting Notice: Trying to get property of non-object in /opt/lampp/htdocs/amit/crawlnepalstock.php on line 49 error in my php page.

Here is my code

<?php

    include_once('simple_html_dom.php');

    error_reporting(E_ALL);

    $html = file_get_html('http://nepalstock.com/datanepse/index.php');

    $indexarray = array('s_no','stocksymbol', 'LTP', 'LTV', 'point_change', 'per_change', 'open','high', 'low', 'volume','prev_close');

    $stocks = array();

    $maincount = 0;
    $tables = $html->find('table[class=dataTable]');

    $str = $html->plaintext;


    $matches = array();


foreach ($tables[0]->find('tr') as $elementtr) {

    $count = 0;

    $temp = array();

    $anchor = $elementtr->children(1)->find('a',0);

    $splits = preg_split('/=/', $anchor->href); **//line 49**

    $temp['stocksymbol'] = isset($splits[1]) ? $splits[1] : null;
    $temp['fullname'] = $elementtr->children(1)->plaintext;
    $temp['no_of_trans'] = $elementtr->children(2)->plaintext;
    $temp['max_price'] = $elementtr->children(3)->plaintext;
    $temp['min_price'] = $elementtr->children(4)->plaintext;
    $temp['closing_price'] = $elementtr->children(5)->plaintext;
    $temp['total_share'] = $elementtr->children(6)->plaintext;
    $temp['amount'] = $elementtr->children(7)->plaintext;
    $temp['previous_close'] = $elementtr->children(8)->plaintext;
    $temp['difference'] = $elementtr->children(9)->plaintext;

    $stocks[] = $temp;

}


$html->clear();
unset($html);

echo '<pre>';
    print_r($stocks);
echo '</pre>';

?>

I have not included simple_html_dom.php class as it is quite long. Your opinions are very much appreciated. You can find simple_html_dom.php file online in case http://sourceforge.net/projects/simplehtmldom/files/

Did you tried to debug array with `print_r()` function? Because this error is about getting value of array field in the wrong format. — user3566301, Jul 08 '14 at 11:36
To begin read this: [reference-what-does-this-error-mean-in-php](http://stackoverflow.com/questions/12769982/reference-what-does-this-error-mean-in-php/12769983#12769983). Where is the line 49 ? Maybe this one `$elementtr->children(1)->find('a',0);`. I guess children return null and show this error. — Debflav, Jul 08 '14 at 11:39
Please see I have included the line 49 comment in the edited part. — user3127109, Jul 09 '14 at 13:25

score 0 · Answer 1 · answered Jul 08 '14 at 11:40

0

You are trying to access property of non-object or from null object. e.g.

    $obj = null;
    echo $boject->first_name // this will produce same error as you are getting.
    // another example may be
     $obj = array();
     echo $obj->first_name; // this will also produce same error.

In code sample Line 49 is not clear so you should check yourself this type of error on line 49.

answered Jul 08 '14 at 11:40

Vicky

603
5
6

Yeah I did var_dump and returned empty string with "". Please view the code i have included the line 49 there!! – user3127109 Jul 09 '14 at 13:26

JCDeen · Answer 2 · 2020-12-11T09:23:41.670

This is happening because there is no longer a td[align="center"] tag found in the google.com document. Perhaps it was there when the code was first written.

So, what the others are saying about a non-object is true, but because the HTML was not found, there is not an object to use the ->plaintext method on.

As of 12/11/2020, if you change the URL found in line 6 of example_basic_selector.php to this: $html = file_get_html('https://www.w3schools.com/tags/tryit.asp?filename=tryhtml_td_align_css');

And change this line echo $html->find('td[align="center"]', 1)->plaintext . '

'; to: echo $html->find('td style="text-align:right"', 1)->plaintext. '
'; the error will go away because the text it searches for is found, and thus the method works as intended.

PHP:Trying to get property of non-object

2 Answers2