Check Password While User Account Creation

<?php

// Meta data about our module
function pwCheck_meta(){
    $_tmp = array(
        'name'        => 'Password Checker',
        'url'         => 'pwcheck',
        'version'     => '1.0.0',
        'developer'   => 'Your Name',
        'description' => 'Checks users passwords on signup',
        'category'    => 'users'
    );
    return $_tmp;
}

// Init function
function pwCheck_init(){
    jrCore_register_event_listener('jrCore', 'form_validate_exit', 'pwCheck_listener');
    return true;
}

// Validate password field after core has validated other fields
function pwCheck_listener($_data, $_user, $_conf, $_args, $event)
{
    global $_post;
    if ($_post['module'] == 'jrUser' && $_post['option'] == 'signup_save') {
        // We have a new user creating an account - check password
        if ($_post['user_passwd1'] != 'abcdefg') {
            jrCore_set_form_notice('error', 'Your password is not abcdefg!');
            jrCore_form_field_hilight('user_passwd1');
            jrCore_form_field_hilight('user_passwd2');
            jrCore_form_result();
        }
    }
    return $_data;
}
?>

if ($_post['user_passwd1'] != 'abcdefg') {