How to get value post array in codeigniter?

Question

How to get value post array in codeigniter? I have problem when I get value post array and echo the value. How to show post value when submit? here the error message:

A PHP Error was encountered

Severity: Notice

Message: Uninitialized string offset: 0

Filename: controllers/blablabla

view html:

<?php $i=0; foreach ($doc as $row) { ?>
<label>
<input name="size[<?php echo $i; ?>]" type="checkbox" value="<?php echo $row['doc']; ?>">&nbsp;&nbsp;<?php echo $row['doc']; ?>
</label>
<?php $i++; } ?>

controller :

$size = $this->input->post('size');
for ($i=0; $i<count($doc); $i++) 
{
   echo $size[$i];
}

Do this $arr = $this->input->post(); print_r($arr); and check if you are getting, and yes, values will come which are checked only — Rahul
– Rahul, Commented Apr 18, 2017 at 4:38
Have you kept die(); exit; ? after print_r and obvious it will come after posting form not as direct if you are using same function for loading form and posting form — Rahul
– Rahul, Commented Apr 18, 2017 at 4:42
@rahul_m : yes I do, here my code $size = $this->input->post('size'); print_r($size); die(); the result still white screen. — silvia zulinka
– silvia zulinka, Commented Apr 18, 2017 at 4:44
No I didn't suggested this, check my comment or copy paste it. Your posted code is wrong — Rahul
– Rahul, Commented Apr 18, 2017 at 4:49

Rahul · Accepted Answer · 2017-04-18 05:53:38Z

4

Change the way name of checkbox written as follows,

<?php foreach ($doc as $row) { ?>
<label>
  <input name="size[]" type="checkbox" value="<?php echo $row['doc']; ?
  >">&nbsp;&nbsp;<?php echo $row['doc']; ?>
</label>
<?php } ?>

And in post method,

$size_arr = $this->input->post('size');
foreach($size_arr as $v){
  echo $v;
}

if for some reason it is not working then check with,

$size_arr = $_POST['size'];
foreach($size_arr as $v){
  echo $v;
}

EDIT

One more alternative,

$arr = $this->input->post();
$size_arr = $arr['size'];
foreach($size_arr as $v){
  echo $v;
}

Core version,

$arr = $_POST;
$size_arr = $arr['size'];
foreach($size_arr as $v){
  echo $v;
}

edited Apr 18, 2017 at 5:53

answered Apr 18, 2017 at 5:03

Rahul

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9 Comments

silvia zulinka Over a year ago

thats still not working, I got this message A PHP Error was encountered Severity: Warning Message: Invalid argument supplied for foreach()

Rahul Over a year ago

check my edit section, if still not working, print_r($arr) and post here, I will look into it

silvia zulinka Over a year ago

I got more error message A PHP Error was encountered Severity: Notice Message: Undefined variable: size

Rahul Over a year ago

It means, you are not getting size input values, can you show me $arr values

Rahul Over a year ago

you sure, form's attribute method is post ?

|

Anant Waykar · Accepted Answer · 2017-04-18 04:59:24Z

2

Your html form code should be like below.

<input name="size[<?php echo $i; ?>]" type="checkbox" value="<?php echo $row['doc']; ?>">

Inside controller your code should be like below.

$size = $this->input->post('size');
foreach($size as $sa)  
{
   echo $sa;
}

answered Apr 18, 2017 at 4:59

Anant Waykar

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1 Comment

silvia zulinka Over a year ago

Wykar : thats not working, I got error message A PHP Error was encountered Severity: Warning Message: Invalid argument supplied for foreach()

Dipen Soni · Accepted Answer · 2017-04-18 05:08:05Z

2

No need to use $i in checkbox name in view file just take an array

View file

<?php foreach ($doc as $row) { ?>
<label>
<input name="size[]" type="checkbox" value="<?php echo $row['doc']; ?>">&nbsp;&nbsp;<?php echo $row['doc']; ?>
</label>
<?php  } ?>

Controller

$countsize = count($this->input->post('size'));
for ($i=0; $i<$countsize ; $i++) 
{
   echo $this->input->post('size')[$i];
}

answered Apr 18, 2017 at 5:08

Dipen Soni

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Comments

dewaz · Accepted Answer · 2021-01-30 13:05:58Z

This one works for me

In View file

<div id="area_input">
  <div id="inputan" class="form-inline">
    <div class="form-group col-sm-6">
      <input type="text" class="form-control" name="size[]" placeholder="ukuran">
    </div>  
    <div class="form-group col-sm-6">
      <input type="text" class="form-control" name="size[]" placeholder="ukuran">
    </div>   
    <div class="form-group col-sm-6">
      <input type="text" class="form-control" name="size[]" placeholder="ukuran">
    </div>
    <div class="form-group col-sm-6">
      <input type="text" class="form-control" name="size[]" placeholder="ukuran">
    </div>            
  </div>  
</div>

you can repeat input as needed.

in Controller file

$data = array(
            'size' => $this->input->post('size'),
        );

You can check stucture of array using print_r($data), or print 'em using:

foreach ($data as $key => $value) {
   foreach ($value as $detail) {
        echo $detail;
        echo "<br>";
    }
}

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