Check if array of object is not empty - php

Question

I'm a newbiw in Codeigniter and i so desperate facing this problem. So, I just made a simple application with CI. When I want to check an array of object (in this case array of $kunj->DIAG), I get an error notice.
Here's some appearance of my view:
View:
<table class="table table-striped table-bordered table-condensed" id="tablescroll" role="grid">
<thead>
<tr class="tablesorter-headerRow" role="row">
<th>No.</th>
<th>Nama</th>
<?php if(!empty($kunj->DIAG)){ echo "<th>ICD</th>"; } ?>
</tr>
</thead>
<tbody aria-live="polite" aria-relevant="all">
<?php if(!empty($kunj)) print_r(count($kunj));
if(!empty($kunj)){
$no = 0;
foreach ($kunj as $i): ?>
<tr align='center'>
<td><?php $no++; echo $no; ?></td>
<td><?php echo $i->NAMA; ?></td>
<?php if(!empty($i->DIAG)){ echo "<td>".$i->DIAG."</td>"; } ?>
</tr>
<?php endforeach ?>
<?php } ?>
</tbody>
</table>
Controller:
function kunjunganpx(){
$this->load->model('simrs/diagnosa_model');
$cari = array(
'icd' => $this->input->post('icd'),
'asr' => $this->input->post('asuransi'),
'tgl_strt' => $this->input->post('tgl_strt'),
'tgl_end' => $this->input->post('tgl_end'),
'stat' => $this->input->post('px_stat'),
'urut' => $this->input->post('urut'),
'opsi' => $this->input->post('opsi'));
$data['kunj'] = $this->diagnosa_model->get_kunjungan_list($cari);
$this->load->view('kunjunganpx_view',$data);
}
And this is notice I get:
A PHP Error was encountered
Severity: Notice
Message: Trying to get property of non-object
Filename: simrs/kunjunganpx_view.php
From googling some site, I realize that array of object can not checked with empty(). But I desperately want to know how to fix this, since I generate my query result in object.
All I wanna know is how to 'hide' the hardprint of ICD when there is no value in $kunj->DIAG. And show it if the variable has some values. Thanks in advance.
UPDATE
As request from a member I attach the var_dump($data); result here:
array(1) { ["kunj"]=> array(2)
{ [0]=> object(stdClass)#21 (20)
{ ["NAMA"]=> string(13) "SUPRIYANTO BP"
["DIAG"]=> string(5) "D48.0" }
[1]=> object(stdClass)#22 (20)
{ ["NAMA"]=> string(13) "SUPRIYANTO BP"
["DIAG"]=> string(5) "C44.9" }
}
}

Answer 1

OK ... Based on the fact that $kunj=array() this is what I came up with.
empty() is not going to work, because the object has the property or not. If it has the property, then you want to parse the extra column.
You will need to test if the property DIAG exists in the object.
if (property_exists($kunj[0], "DIAG"))
After that you can test if $kunj is empty, just like you are doing. In the foreach loop you will again have to test on the property before parsing the extra table cell. If that property is present, you will not have to test for empty.
I have also changed some of your logic. It all results to this:
<table class="table table-striped table-bordered table-condensed" id="tablescroll" role="grid">
<thead>
<tr class="tablesorter-headerRow" role="row">
<th>No.</th>
<th>Nama</th>
<?php
if (property_exists($kunj[0], "DIAG")) {
echo "<th>ICD</th>";
}
?>
</tr>
</thead>
<tbody aria-live="polite" aria-relevant="all">
<?php if(!empty($kunj)){ foreach ($kunj as $k => $i): ?>
<tr align='center'>
<td><?php echo ++$k; ?></td>
<td><?php echo $i -> NAMA; ?></td>
<?php
if (property_exists($kunj[0], "DIAG")) {
echo "<td>{$i->DIAG}</td>";
}
?>
</tr>
<?php endforeach; } ?>
</tbody>
</table>
codepad example: http://codepad.viper-7.com/3Jxi7k

Answer 2

if($kunj->DIAG != ''){ echo "<th>ICD</th>"; } ?>
I think this will fix it, since some times
as i have seen, or understod, u dont get null values, but empty in thos vars.

Answer 3

Could try this:
if (is_object($kunj) && !empty($kunj->DIAG)) {
// do your stuff
}

Answer 4

I am having this problem and is_null is the solution
try this :
if(!is_null($kunj->DIAG)){echo "<th>ICD</th>";}