How can I make a textbox readonly in php

Question

How can I make a textbox readonly in this code

<?php 
    echo form_input(array(
        'name'=>'price',
        'value'=>$item['price'],
        'size'=>'6'
    ));
?>

I want only certain users to only read the value and not be able to change it.

Answer 1

Try like

<?php 
  echo form_input(array('name'=>'price','value'=>$item['price'],'size'=>'6',
     'readonly'=>'true'));
      //Or 'readonly'=>'readonly'
?>

Answer 2

$options    =   array(
                    'name'      =>  'price',
                    'value'     =>  $item['price'],
                    'size'      =>  '6'
);

if(!$allowed_user){
    $options['readonly']    =   'readonly'
}

echo form_input($options);