How to certain POST array variables in PHP?

Question

<input type='hidden' name='var[name1]' value='1'>
<input type='hidden' name='var[name2]' value='1'>
<input type='hidden' name='var[name3]' value='1'>
<input type='hidden' name='var[name4]' value='1'>
<input type='hidden' name='var[name5]' value='1'>

Now, if I need to get all these values I can use foreach using $_POST['var'].

In some situations I need to get only some of these inputs say, 'name2' and 'name5' and $_POST['var[name2]'] and $_POST['var[name5]'] will not work.

What logic can be used in this scenario?

You know you can foreach $_POST['var']. Why not print_r() that variable and see its contents for yourself? — Jeff
– Jeff, Commented Apr 2, 2014 at 6:38

Dai · Accepted Answer · 2014-04-02 06:39:49Z

3

PHP has a special-handling for square-brackets in postvar names: it converts them into an associative-array for you.

You can access them like so:

$name1 = $_POST['var']['name1']

See the comments on the documentation on php.net: http://www.php.net/manual/en/reserved.variables.post.php

answered Apr 2, 2014 at 6:39

Dai

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1 Comment

Hüseyin BABAL Over a year ago

You forgot See here section

ponciste · Accepted Answer · 2014-04-02 06:40:41Z

3

since $_POST is an array and $_POST['var'] is another array you have to access it this way:

$_POST['var']['name1']

answered Apr 2, 2014 at 6:40

ponciste

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Comments

Samuel Liew · Accepted Answer · 2014-04-02 06:39:52Z

2

The variables will be converted to an array if you use square brackets, so get them this way:

$_POST['var']['name2']
$_POST['var']['name5']

answered Apr 2, 2014 at 6:39

Samuel Liew

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Comments

Vinit Kadkol · Accepted Answer · 2014-04-02 06:50:02Z

1

You print the $_POST you will see this array.

    Array
(
    [var] => Array
        (
            [name1] => 1
            [name2] => 1
            [name3] => 1
            [name4] => 1
            [name5] => 1
        )

)

echo $_POST['var']['name2'];
echo $_POST['var']['name5'];

answered Apr 2, 2014 at 6:50

Vinit Kadkol

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Comments

Sarvap Praharanayuthan · Accepted Answer · 2014-04-02 07:00:07Z

1

Try this -

echo 'Value1 = '.$_POST["var"]["name1"];
echo 'Value2 = '.$_POST["var"]["name2"];
echo 'Value3 = '.$_POST["var"]["name3"];
echo 'Value4 = '.$_POST["var"]["name4"];
echo 'Value5 = '.$_POST["var"]["name5"];

edited Apr 2, 2014 at 7:00

Sarvap Praharanayuthan

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answered Apr 2, 2014 at 6:49

Parag Tyagi

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Comments

AyB · Accepted Answer · 2014-04-02 06:46:02Z

0

When you do that way, the structure becomes:

array (
  'var' => 
    array (
      'name1' => '1' 
      'name2' => '2'
      'name3' => '3' 
      'name4' => '4' 
      'name5' => '5'
   )
)

So $_POST is an array with inner array var consisting of multiple associative indexes. So you need to access it as $_POST['val']['name1']

To get all the var values at once, you can loop it like:

foreach($_POST['var'] as $val)
{
  echo $val;
}

answered Apr 2, 2014 at 6:46

AyB

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