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+--- Thread: Invalid argument supplied for foreach() Filename: views/navigation.php (/thread-27086.html)



Invalid argument supplied for foreach() Filename: views/navigation.php - El Forum - 02-01-2010

[eluser]mehdy[/eluser]
my getSubCategories function in mcats
function getCategoriesNav(){
$data = array();
$this->db->select('id,name,parentid');
$this->db->where('status', 'active');
$this->db->orderby('parentid','asc');
$this->db->orderby('name','asc');
$this->db->groupby('parentid,id');
$Q = $this->db->get('categories');
if ($Q->num_rows() > 0){
foreach ($Q->result() as $row){
if ($row->parentid > 0){
$data[0][$row->parentid]['children'][$row->id] = $row->name;

}else{
$data[0][$row->id]['name'] = $row->name;
}
}
}
$Q->free_result();
return $data;
}



my view/navigation

if (count($navlist)){
echo "<ul>";
foreach ($navlist as $key => $list){
foreach ($list as $topkey => $toplist){
echo "<li class='cat'>";
echo anchor("welcome/cat/$topkey",$toplist['name']);
echo "</li>\n";
if (count($toplist['children'])){
foreach ($toplist['children'] as $subkey => $subname){
echo "\n<li class='subcat'>";
echo anchor("welcome/cat/$subkey",$subname);
echo "</li>";
}
}
}
}
echo "</ul>\n";
}

my welcome/cat

function cat($id){
//$this->benchmark->mark('query_start');
$cat = $this->MCats->getCategory($id);
//$this->benchmark->mark('query_end');
if (!count($cat)){
redirect('welcome/index','refresh');
}
$data['title'] = "Claudia's Kids | ". $cat['name'];

if ($cat['parentid'] < 1){
//show other categories
$data['listing'] = $this->MCats->getSubCategories($id);
$data['level'] = 1;
}else{
//show products
$data['listing'] = $this->MProducts->getProductsByCategory($id);
$data['level'] = 2;

}
$data['category'] = $cat;
$data['main'] = 'category';
$data['navlist'] = $this->MCats->getCategoriesNav();
$this->load->vars($data);
$this->load->view('template');
}


when i load home page , its shows the following errors .


A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# s
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# S
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
#
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 7
http://localhost/codeigniter2/index....e/cat/longdesc
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 9
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 10
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# a
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# 7
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# 0
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# 2
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# s
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# S
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
#
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 7
http://localhost/codeigniter2/index....e/cat/longdesc
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 9
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 10
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# a
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# 7
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# 0
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# 3
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# p
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
# S
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php

Line Number: 10
#
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 7
http://localhost/codeigniter2/index....e/cat/longdesc
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 9
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 10
A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/navigation.php


Invalid argument supplied for foreach() Filename: views/navigation.php - El Forum - 02-01-2010

[eluser]danmontgomery[/eluser]
I'm just guessing that in

Code:
foreach ($list as $topkey => $toplist){

$list is not an array. Since the error very clearly states that it's on line 10, maybe you'd consider telling us what line 10 is?


Invalid argument supplied for foreach() Filename: views/navigation.php - El Forum - 02-01-2010

[eluser]mehdy[/eluser]
thank you for your reply . my line 10 is

Code:
foreach ($toplist['children'] as $subkey => $subname){



Invalid argument supplied for foreach() Filename: views/navigation.php - El Forum - 02-01-2010

[eluser]danmontgomery[/eluser]
This is faulty logic:

Code:
if(count($var))

Since almost anything will return 1 or more. You should use is_array() in combination with count() or empty()


Invalid argument supplied for foreach() Filename: views/navigation.php - El Forum - 02-01-2010

[eluser]mehdy[/eluser]
thank you very much , im trying ,still get the same error . will you kindly post me the , code in description . thank u once again ,


Invalid argument supplied for foreach() Filename: views/navigation.php - El Forum - 02-01-2010

[eluser]danmontgomery[/eluser]
Code:
if(is_array($toplist['children']) && count($toplist['children'])) {
  foreach($toplist['children'] as $subkey => $subname) {
    ...



Invalid argument supplied for foreach() Filename: views/navigation.php - El Forum - 02-01-2010

[eluser]mehdy[/eluser]
thank you , now i have the following error
# 1
# s
# S
#
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 7
http://localhost/codeigniter2/index.php/welcome/cat/longdesc
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 9
# a
# 7
# 2
# s
# S
#
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 7
http://localhost/codeigniter2/index.php/welcome/cat/longdesc
A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: views/navigation.php

Line Number: 9


Invalid argument supplied for foreach() Filename: views/navigation.php - El Forum - 02-01-2010

[eluser]mehdy[/eluser]
i think my model is not working properly, please help me understand this line in function getCategoriesNav

$data[0][$row->parentid]['children'][$row->id] = $row->name ,, what dose this line means and where the children come from ????