230 lines
5.9 KiB
PHP
230 lines
5.9 KiB
PHP
<?php
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/*
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pdfLayer class - Convert html to pdf
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version 1.0 2/8/2016
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API reference at https://pdflayer.com/documentation
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Copyright (c) 2016, Wagon Trader
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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class html2pdf{
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//*********************************************************
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// Settings
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//*********************************************************
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//Your pdfLayer API key
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//Available at https://pdflayer.com/product
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private $apiKey = 'YOUR_API_KEY_HERE';
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//API endpoint
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//only needs to change if the API changes location
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private $endPoint = 'http://api.pdflayer.com/api/convert';
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//Secret Keyword defined in your pdfLayer dashboard
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//leave blank if you have not activated this feature
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private $secretKey = '';
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//API key/value pair params
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public $params = array();
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//response capture
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public $capture;
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/*
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method: class construction
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usage: html2pdf([string url]);
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params: url = URL to web page
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The pdfLayer API requires a valid webpage URL or posted HTML to convert.
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returns: null
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*/
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public function __construct($url=''){
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if( !empty($url) ){
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$this->params['document_url'] = $url;
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if( !empty($this->secretKey) ){
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$secret = md5($url.$this->secretKey);
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$this->params['secret_key'] = $secret;
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}
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}
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}
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/*
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method: convertHTML
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usage: convertHTML([redirect=false]);
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params: redirect = redirect browser to api
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This method will query the api to convert the html to pdf.
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If redirect is set to true, browser will be redirected directly to api.
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returns: null
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*/
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public function convertHTML($redirect=false){
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if( empty($this->params['document_url']) AND empty($this->params['document_html']) ){
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throw new Exception('A document must be provided!');
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}
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$request = $this->buildRequest();
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$postData = array();
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if( !empty($this->params['document_html']) ){
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$postData['document_html'] = $this->params['document_html'];
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}
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if( !empty($this->params['header_html']) ){
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$postData['header_html'] = $this->params['header_html'];
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}
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if( $redirect ){
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header('location: '.$request);
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exit;
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}
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$ch = curl_init($request);
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curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
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curl_setopt($ch,CURLOPT_POST,true);
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curl_setopt($ch,CURLOPT_POSTFIELDS,http_build_query($postData));
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$this->capture = curl_exec($ch);
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curl_close($ch);
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$response = json_decode($this->capture);
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if( is_object($response) ){
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throw new Exception($response->error->info);
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}
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}
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/*
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method: downloadCapture
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usage: downloadCapture([string fileName='']);
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params: fileName = The name of the file written to disk
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This method will download the pdf to the client.
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returns: null
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*/
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public function downloadCapture($fileName=''){
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$fileName = ( empty($fileName) ) ? 'capture' : $fileName;
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if( empty($this->capture) ){
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throw new Exception('No pdf has been captured');
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}
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header('Content-Type: application/pdf');
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header('Content-Disposition: attachment; filename="'.$fileName.'"');
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header('Content-Transfer-Encoding: binary');
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echo $this->capture;
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}
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/*
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method: displayCapture
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usage: displayCapture(void);
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params: none
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This method will display the pdf to the browser.
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returns: null
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*/
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public function displayCapture(){
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if( empty($this->capture) ){
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throw new Exception('No image has been captured');
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}
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header('Content-Type: application/pdf');
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echo $this->capture;
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}
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/*
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method: buildRequest
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usage: buildRequest(void);
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params: none
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This method will build the api request url.
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returns: api request url
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*/
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public function buildRequest(){
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$request = $this->endPoint.'?access_key='.$this->apiKey;
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foreach( $this->params as $key=>$value ){
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if( $key == 'document_url' ){
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$request .= '&document_url='.urlencode($value);
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}elseif( $key == 'document_html' ){
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//this will be posted
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}else{
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$request .= '&'.$key.'='.$value;
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}
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}
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return $request;
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}
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/*
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method: setParam
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usage: setParam(string key, string value);
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params: key = key of the params key/value pair
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value = value of the params key/value pair
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add or change the params key/value pair specified.
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returns: null
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*/
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public function setParam($key,$value){
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$this->params[$key] = $value;
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}
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}
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?>
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