functions.php

<?php 

function ece_scripts() {
	wp_enqueue_style( 'ece-style', get_stylesheet_directory_uri() . '/css/ece.css');
	wp_enqueue_script('ece-custom', get_stylesheet_directory_uri().'/js/custom.js', array('jquery', 'cs'));
	wp_localize_script( 'ece-custom', 'ece_object', array( 'ajaxurl' => admin_url( 'admin-ajax.php' ), 'siteurl' => site_url() ) );
}
add_action( 'wp_enqueue_scripts', 'ece_scripts');

function ece_get_courses( $discipline ){
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL,"http://web2.uconn.edu/ece/preadvising/pread_course.php");
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS, 'discipline='.$discipline);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	$courses = curl_exec($ch);
	curl_close ($ch);

	return json_decode($courses);
}

function ajax_ece_discipline_courses(){
	$discipline = $_POST['discipline'];

	$courses = ece_get_courses( urlencode($discipline) );

	echo wp_json_encode( $courses );
	wp_die();
}
add_action( 'wp_ajax_ece_discipline_courses', 'ajax_ece_discipline_courses' );
add_action('wp_ajax_nopriv_ece_discipline_courses', 'ajax_ece_discipline_courses');

function ece_get_course_info( $discipline, $course ){
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL,"http://web2.uconn.edu/ece/preadvising/pread_course.php");
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS, 'course='.$course.'&discipline='.$discipline);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	$courses = curl_exec($ch);
	curl_close ($ch);

	return json_decode($courses);	
}

function ajax_ece_course_info(){
	$discipline = $_POST['discipline'];
	$course = $_POST['course'];

	$courseInfo = ece_get_course_info( urlencode($discipline), urlencode($course) );

	echo wp_json_encode( $courseInfo );
	wp_die();
}
add_action( 'wp_ajax_ece_course_info', 'ajax_ece_course_info' );
add_action('wp_ajax_nopriv_ece_course_info', 'ajax_ece_course_info');

function ece_get_major_info( $major ){
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL,"http://web2.uconn.edu/ece/preadvising/pread_major.php");
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS, 'major='.$major);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	$info = curl_exec($ch);
	curl_close ($ch);

	return json_decode($info);		
}

function ajax_ece_major_info(){
	$major = $_POST['major'];
	
	$majorInfo = ece_get_major_info( urlencode($major) );
	
	echo wp_json_encode( $majorInfo );
	wp_die();	
}
add_action( 'wp_ajax_ece_major_info', 'ajax_ece_major_info' );
add_action('wp_ajax_nopriv_ece_major_info', 'ajax_ece_major_info');
?>