wp_formassembly.php

<?php
/*
Plugin Name: WP-FormAssembly
Plugin URI: http://www.formassembly.com/plugins/wordpress/
Description: Embed a FormAssembly Web Form in a WordPress Post. To use, add a [[formassembly formid='NNNN']] tag to your post. To create your web form, go to http://www.formassembly.com
Version: 2.0
Author: FormAssembly.com  / Drew Buschhorn
Author URI: http://www.formassembly.com
*/

/*
Inspired by Include It
http://www.satollo.com/english/wordpress/include-it/
*/

/*
Basic Usage:

[formassembly formid=NNNN]
or
[formassembly workflowid=NNNN}]

(where NNNN is the ID of a form or workflow created with FormAssembly.com)

Advanced Attributes:
  iframe="true"                 Render as iframe
  style="XXX: YYYY;"            Add CSS overrides to either Form or Iframe
  server="a URL"                Override the default server (http://app.formassembly.com) to retrieve the form from a different FormAssembly instance. E.g "http://acme.tfaforms.net"

*/






//
add_shortcode('formassembly', 'fa_add');
add_filter('the_content', 'fa_handle');


function fa_handle($content){
    $open_b  = '[[';
    $x = strpos($content, $open_b . "formassembly");
    if ($x === false) return $content;
    $warningMessage = "<!-- Old style formassembly [[XXXXX XXXXX]] tag replaced -->\n";
    return preg_replace('/\[\[formassembly (.*)\]\]/U',$warningMessage.'[formassembly $1]',$content);
}

function fa_add($atts) {
        $qs = '';
        if(isset($_SERVER['QUERY_STRING']) && !empty($_SERVER['QUERY_STRING']))
                {$qs='?'.$_SERVER['QUERY_STRING'];};

                if(isset($atts['server'])){
                        if(parse_url($atts['server'])===false){
                                return $content;
                        }
                        $host_url = $atts['server'];
                } else {
                        $host_url = "http://app.formassembly.com";
                }

                if(isset($atts['formid']) || isset($atts['workflowid'])){

                        if(isset($atts['formid'])){
                                $action_url = "forms/view";
                                $fa_id = $atts['formid'];
                        }
                        elseif(isset($atts['workflowid'])){
                                $action_url = "workflows/start";
                                $fa_id = $atts['workflowid'];
                        }

                        // IFRAME method
                        if(isset($atts['iframe'])){
                                if(!isset($atts['style'])){
                                        $atts['style']  = "width: 100%; min-height: 650px;";
                                }
                                $attributes = implode(' ',array("frameborder=0","style='".$atts['style']."'"));
                                $new_content = '<iframe '.$attributes.' src="'.$host_url.'/'.$action_url.'/'.$fa_id.$qs.'"></iframe>';
                        }
                        // REST API method
                        else {
                                // Use cURL if available
                                if(extension_loaded('curl') ){

                                        $ch = curl_init();
                                        curl_setopt($ch, CURLOPT_HEADER, 0);
                                        curl_setopt($ch, CURLOPT_AUTOREFERER, 1);
                                        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
                                        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

                                        if(!isset($_GET['tfa_next'])) {
                                                curl_setopt($ch, CURLOPT_URL,$host_url.'/rest/'.$action_url.'/'.$fa_id.$qs);
                                        } else {
                                                curl_setopt($ch, CURLOPT_URL,$host_url.'/rest'.$_GET['tfa_next']);
                                        };
                                        $buffer = curl_exec($ch);
                                }
                                // Use file_get_contents (fopen) otherwise (Note: referrer not set)
                                elseif(ini_get("allow_url_fopen")=="1" && function_exists("file_get_contents")) {

                                        if(!isset($_GET['tfa_next'])) {
                                                $buffer = file_get_contents($host_url.'/rest/'.$action_url.'/'.$fa_id.$qs);
                                        } else {
                                                $buffer = file_get_contents($host_url.'/rest'.$_GET['tfa_next']);
                                        }
                                }
                                // REST API call not supported, must use iframe instead.
                                else {
                                        $buffer = "<strong style=\"color:red\">Your server does not support this form publishing method. Try adding iframe=\"1\" to your formassembly tag.</strong>";
                                }

                                // Add style options in to combat wordpresses' default centering of forms.
                                if(!isset($atts['style'])){
                                        $style = "<style>.wForm form{text-align: left;}</style>";
                                } else {
                                        $style = "<style>.wForm form{" .$atts['style']. "}</style>";
                                }

                                $new_content = $style . $buffer;
                        }
                }
        return $new_content;
}
//
?>