Sample Ajax Form WP

ajax-form-wp.php

<?php

/**
 * Validate data and send mail.
 *
 * @see http://codex.wordpress.org/Function_Reference/wp_mail
 * @return {int} Status of message:
 * -2 => Invalid data
 * -1 => Failed to send
 *  1 => OK
 */
function sendMail() {

  echo 'jebaka';

	$response = array(
	'status' => -2,
	'errors' => []
	);


	if ( !isset( $_POST['name'] ) || !isset( $_POST['email'] ) || !isset( $_POST['company'] ) || !isset( $_POST['message'] ) ) {

		echo json_encode( $response );

		die();
	}

	$name = esc_attr( $_POST['name'] );
	$email = sanitize_email( $_POST['email'] );
	$company = esc_attr( $_POST['company'] );
	$message = esc_textarea( $_POST['message'] );

	if ( !strlen( $name ) )
		$response['errors']['name'] = "C'mon, what's your name?";

	if ( !is_email( $email ) )
		$response['errors']['email'] = "Please, give us valid email.";

	if ( !strlen( $company ) )
		$response['errors']['company'] = "Please, tell us what's your company name.";

	if ( !strlen( $message ) )
		$response['errors']['message'] = "No message, huh?";

	if ( empty( $response['errors'] ) ) {

		$to = get_bloginfo( 'admin_email' );
		$subject = 'Contact from ' . get_bloginfo( 'name' );

		$headers[] = "From: $name <$email>";


		if ( array_key_exists( 'img', $_REQUEST ) ) {
			// decode the base64-encoded image received
			// drop the first 22 characters from the string received,
			// (having the substring "data:image/png;base64,")
			$imgData = base64_decode( substr( $_REQUEST['img'], 22 ) );

			// Path where the image is going to be saved
			$file = '/uploads/image.png';

			// delete previously uploaded image with the same path
			if ( file_exists( $file ) )
				unlink( $file );

			// write $imgData into the file
			$fp = fopen( $file, 'w' );
			fwrite( $fp, $imgData );
			fclose( $fp );
		}

		$isSent = wp_mail( $to, $subject, $message, $headers, $file );

		$response['status'] = $isSent ? 1 : -1;
	}
	echo json_encode( $response );

	die();
}

add_action( 'init', 'icc_ajax_setup' );

/**
 * Sets up ajax actions for form posting
 * 
 * @hook init
 */
function icc_ajax_setup() {

	// handle ajax requests
	add_action( 'wp_ajax_sendMail', 'sendMail' );
	add_action( 'wp_ajax_nopriv_sendMail', 'sendMail' );


	// not logged in 
	if ( isset( $_REQUEST['action'] ) ) {
		do_action( 'wp_ajax_nopriv_' . $_REQUEST['action'] );
	}

	// logged in
	if ( isset( $_POST['action'] ) ) {
		do_action( 'wp_ajax_' . $_POST['action'] );
	}
}