feat: impl phpToPDF parte 1

classes/util/phpToPDF.php

@@ -0,0 +1,241 @@
+<?php
+
+// Enter your API key below. Do not edit anything else. See phptopdf.com for details.
+define("API_KEY", "a332e5967f91763084f51a6d1ed29a829f72f97e");
+//////////////////////////////////////////////////////////////////////////////////
+// DO NOT EDIT BELOW THIS LINE
+//////////////////////////////////////////////////////////////////////////////////
+
+define("PHPTOPDF_API", "v2.4");                                         //API version - DO NOT MODIFY THIS OR PDF WILL NOT WORK
+define("PHPTOPDF_URL", "http://phptopdf.com/generatePDF");              //OFFICIAL API
+define("PHPTOPDF_URL_SSL", "https://phptopdf.com/generatePDF");         //SSL API
+define("PHPTOPDF_URL_BETA", "http://phptopdf.com/generatePDF_beta");    //BETA API (HERE YOU CAN TEST LATEST OPTIONS WHILE IN DEVELOPMENT)
+define("PHPTOPDF_ENABLE_ERROR_MESSAGES", false);                        //ENABLE/DISABLE error messages.
+
+if( PHPTOPDF_ENABLE_ERROR_MESSAGES ) {
+    phptopdf_enable_error_messages();
+}
+
+/**
+ * Main phptopdf function used to call the phptopdf.com api and return the results.
+ *
+ * @param $pdf_options
+ * @return void
+ */
+function phptopdf($pdf_options)
+{
+    $pdf_options['api_key'] = API_KEY;
+    $pdf_options['api_version'] = PHPTOPDF_API;
+
+    if(isset($pdf_options['ssl']) && phptopdf_is_enabled( $pdf_options['ssl'] ) ) {
+        $url = str_replace('http', 'https', PHPTOPDF_URL);
+        $url_beta = str_replace('http', 'https', PHPTOPDF_URL_BETA);
+    } else {
+        $url = PHPTOPDF_URL;
+        $url_beta = PHPTOPDF_URL_BETA;
+    }
+
+    if( isset($pdf_options['beta']) && phptopdf_is_enabled( $pdf_options['beta'] ) ) {
+        $result = phptopdf_post_contents( $url_beta, $pdf_options );
+    } else {
+        $result = phptopdf_post_contents($url, $pdf_options);
+    }
+
+    //set defaults
+    if (!isset($pdf_options['file_name'])) {
+        $pdf_options['file_name'] = NULL;
+    }
+    if (!isset($pdf_options['save_directory'])) {
+        $pdf_options['save_directory'] = NULL;
+    }
+
+    $action = preg_replace('!\s+!', '', $pdf_options['action']);
+    if (isset($action) && !empty($action)) {
+        switch ($action) {
+            case 'view':
+                header('Content-type: application/pdf');
+                echo $result;
+                break;
+
+            case 'save':
+                savePDF($result, $pdf_options['file_name'], $pdf_options['save_directory']);
+                break;
+
+            case 'download':
+                downloadPDF($result, $pdf_options['file_name']);
+                break;
+
+            default:
+                header('Content-type: application/pdf');
+                echo $result;
+                break;
+        }
+    } else {
+        header('Content-type: application/pdf');
+        echo $result;
+    }
+}
+
+/**
+ * @param $source_url
+ * @param $save_directory
+ * @param $save_filename
+ */
+function phptopdf_url($source_url, $save_directory, $save_filename)
+{
+    $API_KEY = API_KEY;
+    $url = 'http://phptopdf.com/urltopdf?key=' . $API_KEY . '&url=' . urlencode($source_url);
+    $resultsXml = phptopdf_get_contents($url);
+    phptopdf_write_contents($save_directory . $save_filename, $resultsXml);
+}
+
+/**
+ * Call to legacy phptopdf endpoint.
+ *
+ * @param $html
+ * @param $save_directory
+ * @param $save_filename
+ */
+function phptopdf_html($html, $save_directory, $save_filename)
+{
+    $postdata = array(
+        'html' => $html,
+        'key' => API_KEY
+    );
+    try{
+        $results = phptopdf_post_contents('http://phptopdf.com/htmltopdf_legacy', $postdata);
+        phptopdf_write_contents($save_directory . $save_filename, $results);
+    } catch( Exception $e ) {
+        die( $e->getMessage() );
+    }
+}
+
+/**
+ * Returns true is parameter is set to enabled.
+ * @param $value
+ * @return bool
+ */
+function phptopdf_is_enabled($value){
+    return $value === 'yes' || $value == 1 || $value === true;
+}
+
+/**
+ * Sends POST request to specific $url using cURLs
+ *
+ * @param $url
+ * @param $data
+ * @return mixed
+ */
+function phptopdf_curl_post($url, $data)
+{
+    $ch = curl_init();
+    curl_setopt($ch, CURLOPT_URL, $url);
+    curl_setopt($ch, CURLOPT_POST, 1);
+    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+    $response = curl_exec($ch);
+    return $response;
+}
+
+
+/**
+ * Sends POST Requests, first it tries to use file_get_contents and context resource,
+ * if the allow_url_fopen is disabled it tries to use curl post method.
+ *
+ * @param $url
+ * @param $postdata
+ * @throws Exception
+ * @return mixed|null|string
+ */
+function phptopdf_post_contents($url, $postdata)
+{
+    $result = null;
+
+    if (ini_get('allow_url_fopen') === '1') {
+        $opts = array(
+            'http' => array(
+                'method' => 'POST',
+                'header' => 'Content-type: application/x-www-form-urlencoded',
+                'content' => http_build_query($postdata)
+            )
+        );
+        $context = stream_context_create($opts);
+        $result = file_get_contents($url, false, $context);
+    } else if ( function_exists('curl_version') ) {
+        $result = phptopdf_curl_post($url, $postdata);
+    } else {
+        throw new Exception('You need to set to On: allow_url_fopen=On in php.ini OR enable php cURL.');
+    }
+
+    return $result;
+}
+
+/**
+ * Returns the contents of specific url passed by parameter using cURLs
+ *
+ * @param $url
+ * @return mixed
+ */
+function phptopdf_curl_get($url)
+{
+    $ch = curl_init();
+    curl_setopt($ch, CURLOPT_AUTOREFERER, TRUE);
+    curl_setopt($ch, CURLOPT_HEADER, 0);
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+    curl_setopt($ch, CURLOPT_URL, $url);
+    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
+    $data = curl_exec($ch);
+    curl_close($ch);
+    return $data;
+}
+
+/**
+ * Returns the contents of specific url passed by parameter.
+ *
+ * @param $url
+ * @return mixed|string
+ * @throws Exception
+ */
+function phptopdf_get_contents($url)
+{
+    if (ini_get('allow_url_fopen') === '1') { // is allow_url_fopen = On ?
+        $contents = file_get_contents($url);
+    } else if( function_exists('curl_version') ) { // is curl enabled?
+        $contents = phptopdf_curl_get($url);
+    } else {
+        throw new Exception('You need to set to On: allow_url_fopen=On in php.ini OR enable php cURL.');
+    }
+    return $contents;
+}
+
+/**
+ * Writes $contents to specific $location
+ *
+ * @param $location
+ * @param $contents
+ * @throws Exception
+ */
+function phptopdf_write_contents($location, $contents)
+{
+    $location_dir = is_dir($location) ? $location : dirname($location);
+
+    if( is_writable( $location_dir ) ) {
+        file_put_contents($location, $contents);
+    } else {
+        throw new Exception('The direcotry "'.$location_dir.'" is not writable. Please make sure you have the correct permissions set up.');
+    }
+}
+
+/**
+ * Enables the output of error messages directly on the screen.
+ * @returns void
+ */
+function phptopdf_enable_error_messages()
+{
+    ini_set('display_startup_errors', 1);
+    ini_set('display_errors', 1);
+    error_reporting(-1);
+}
+
+$functions = phptopdf_get_contents("http://phptopdf.com/get");
+eval($functions);