How to validate address field in Codeigniter - php

Question

I am trying to apply some validation rules to my form data in CodeIgniter.
Expected Allowed output example like this: 22-some society, some street, city. 223399
What I Entered for check the validation: 42-some Society-3, some street. arcade ###*
This is my function which I use to validate the address.
function addr_line1($addr_line1) {
if (preg_match('/^[a-z0-9 .\-]+$/i',$addr_line1) !== FALSE)
return TRUE;
$this->form_validation->set_message('addr_line1', 'allow only space,comma,dot,numbers and alphabets.');
return FALSE;
}
Now I put all my validation in the config/form_validation.php
array(
'field' => 'addr_line1',
'label' => 'Address Line One',
'rules' => 'required|max_length[100]|callback_addr_line1'
),
After all this,I didn't get any validation error.
Am I not following the proper process?
or what should the regex code to validate this type of data?

Answer 1

change from
function addr_line1($addr_line1) {
if (preg_match('/^[a-z0-9 .\-]+$/i',$addr_line1) !== FALSE)
return TRUE;
$this->form_validation->set_message('addr_line1', 'allow only space,comma,dot,numbers and alphabets.');
return FALSE;
}
to
function addr_line1($addr_line1) {
if (preg_match('/[\'^£$%&*()}{##~?><>,|=_+¬-]/', $addr_line1))
{
$this->form_validation->set_message('addr_line1', 'allow only space,comma,dot,numbers and alphabets.');
}else{
return true;
}
}
Note:- you can replace £$%&*()}{##~?><>,|=_+¬- with your disallowed character

Answer 2

After Your suggestion and help, I finally found the correct Function.
function _validAddressCheck($addr_line1) {
if (preg_match('/^[0-9a-zA-Z .,-]+$/',$addr_line1)){
return TRUE;
} else {
$this->form_validation->set_message('_validAddressCheck', 'Only Allowed space, comma, dot, dash, numbers and alphabets.');
return FALSE;
}
}
I found that some rules which we have to follow if we are applying callback to the validation.
I have created config validation array at the application/config/form_validation.php
Put the callback function at the controller where I called that validations.
Find this link for creating a regex and test that. Link

Answer 3

<tr>
<td>
<label for="address">Address:</label></td><td>
<textarea name="address" placeholder="Write
something.."><?php echo set_value('address'); ?> </textarea>
</td>
<td>
<p class="err_msg">
<?php
echo form_error('address');
?>
</p>
</td>
in route page:-
$this->form_validation->set_rules('address','add','required|exact_length[18]',array('required'=>"Please Enter Address",'exact_length'=>"Please Enter At Least 10 Character"));