To display invalid email and password error message - php

Question

In view: login.php
I am using this view file in two places one for user login and other displaying the invalid user and password message. Below i mentioned some code but it does not work. give me any suggestion regarding this problem.
<div class="login-content">
/*
message to be displayed here:
i try this one:<?php if(!(authentication($email,$password) == TRUE)){
echo "Invalid email address or password";
}?>
*/
<form action="<?php echo site_url('auth/check');?>" method="POST" class="margin-bottom-0" data-parsley-validate="true" onsubmit = "return Validate();" >
<div class="form-group m-b-15">
<input type="text" name="txtemail" id="txtemail" class="form-control input-lg" placeholder="<?php echo $language['Email'];?>" data-parsley-required='true' maxlength="95"/>
</div>
<div class="form-group m-b-15">
<input type="password" name="txtpassword" id="txtpassword" class="form-control input-lg" placeholder="<?php echo $language['Password'];?>" data-parsley-required='true' maxlength="95"/>
</div>
In Controller: Auth.php
This is a function for checking the user validation. I want to display a message using this function in else condition.
public function check(){
$email = $this->input->post('txtemail');
$password = $this->encrypt($this->input->post('txtpassword'));
$this->load->model('cmsuser_model');
$user = $this->cmsuser_model->authentication($email,$password);
if(!is_null($user))
{
$this->session->set_userdata('user', $user);
$this->session->set_userdata('profile_image',$user->image);
$this->session->set_userdata('is_manager','0');
$this->load->model('association_model');
$table = '';
$limit = '';
$order_by = '';
$group_by = '';
$start = '';
$fields = '';
$where = array();
$where['created_by'] = $this->session->userdata['user']->cmsuid;
$dt = $this->association_model->get_all($fields, $where, $table, $limit, $order_by, $group_by, $start);
$this->session->set_userdata('ass_id', $dt[0]['ass_id']);
redirect(base_url('index.php/welcome'), 'refresh');
}
else{
//Browser redirect to this else condition but i am not able to display message in `view(login.php)` file.
redirect(base_url('index.php/auth/login'), 'refresh');
}
exit;
}

Answer 1

public function check(){
$email = $this->input->post('txtemail');
$password = $this->encrypt($this->input->post('txtpassword'));
$this->load->model('cmsuser_model');
$user = $this->cmsuser_model->authentication($email,$password);
if(!is_null($user))
{
$this->session->set_userdata('user', $user);
$this->session->set_userdata('profile_image',$user->image);
$this->session->set_userdata('is_manager','0');
$this->load->model('association_model');
$table = '';
$limit = '';
$order_by = '';
$group_by = '';
$start = '';
$fields = '';
$where = array();
$where['created_by'] = $this->session->userdata['user']->cmsuid;
$dt = $this->association_model->get_all($fields, $where, $table, $limit, $order_by, $group_by, $start);
$this->session->set_userdata('ass_id', $dt[0]['ass_id']);
redirect(base_url('index.php/welcome'), 'refresh');
}
else{
$url=echo base_url('login.php').'?status=err';
redirect($url, 'refresh');
//this will redirect you to the login page with the parameter status in the url
}
exit;
}
in login.php View File
<?php
$satatus = $_GET['status'];
if($status == 'err'){
?>
//add this div right above the login section
<div>Wrong Username/Password !!</div>
<div class="login-content">
/*
message to be displayed here:
i try this one:<?php if(!(authentication($email,$password) == TRUE)){
echo "Invalid email address or password";
}?>
*/
<form action="<?php echo site_url('auth/check');?>" method="POST" class="margin-bottom-0" data-parsley-validate="true" onsubmit = "return Validate();" >
<div class="form-group m-b-15">
<input type="text" name="txtemail" id="txtemail" class="form-control input-lg" placeholder="<?php echo $language['Email'];?>" data-parsley-required='true' maxlength="95"/>
</div>
<div class="form-group m-b-15">
<input type="password" name="txtpassword" id="txtpassword" class="form-control input-lg" placeholder="<?php echo $language['Password'];?>" data-parsley-required='true' maxlength="95"/>
</div>
<?php
}
?>