How to parse invoice and fill database (sql server) for document parser API in PHP and PDF.co Web API

PDF.co Web API is the Web API with a set of tools for documents manipulation, data conversion, data extraction, splitting and merging of documents. Includes image recognition, built-in OCR, barcode generation and barcode decoders to decode bar codes from scans, pictures and pdf.

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Google Invoice.json

      
{ "templateName": "Google Invoice", "templateVersion": 4, "templatePriority": 0, "detectionRules": { "keywords": [ "Google", "77-0493581", "Invoice" ] }, "objects": [ { "name": "invoiceId", "objectType": "field", "fieldProperties": { "expression": "Invoice number:{{Spaces}}({{Digits}})", "regex": true }, "id": 0 }, { "name": "dateIssued", "objectType": "field", "fieldProperties": { "expression": "Issue date:{{Spaces}}({{SmartDate}})", "regex": true, "dataType": "date", "dateFormat": "MMM d, yyyy" }, "id": 1 }, { "name": "total", "objectType": "field", "fieldProperties": { "expression": "Amount due in USD:{{Spaces}}{{Number}}", "regex": true, "dataType": "decimal" }, "id": 2 }, { "name": "subTotal", "objectType": "field", "fieldProperties": { "expression": "Subtotal in USD:{{Spaces}}{{Number}}", "regex": true, "dataType": "decimal" }, "id": 3 }, { "name": "taxRate", "objectType": "field", "fieldProperties": { "expression": "State sales tax {{OpeningParenthesis}}{{Digits}}{{Percent}}{{ClosingParenthesis}}", "regex": true, "dataType": "integer" }, "id": 4 }, { "name": "tax", "objectType": "field", "fieldProperties": { "expression": "State sales tax{{Anything}}{{Number}}{{LineEnd}}", "regex": true, "dataType": "decimal" }, "id": 5 }, { "name": "companyName", "objectType": "field", "fieldProperties": { "fieldType": "static", "expression": "Google LLC", "regex": true }, "id": 6 }, { "name": "billTo", "objectType": "field", "fieldProperties": { "fieldType": "rectangle", "regex": true, "rectangle": [ 0, 152, 280, 72 ], "pageIndex": 0 }, "id": 7 }, { "name": "billingId", "objectType": "field", "fieldProperties": { "expression": "Billing ID:{{Spaces}}({{DigitsOrSymbols}})", "regex": true }, "id": 8 }, { "name": "currency", "objectType": "field", "fieldProperties": { "fieldType": "static", "expression": "USD", "regex": true }, "id": 9 }, { "name": "table1", "objectType": "table", "tableProperties": { "start": { "expression": "Description{{Spaces}}Interval{{Spaces}}Quantity{{Spaces}}Amount", "regex": true }, "end": { "expression": "Subtotal in USD", "regex": true }, "row": { "expression": "{{LineStart}}{{Spaces}}(?<description>{{SentenceWithSingleSpaces}}){{Spaces}}(?<interval>{{3Letters}}{{Space}}{{Digits}}{{Space}}{{Minus}}{{Space}}{{3Letters}}{{Space}}{{Digits}}){{Spaces}}(?<quantity>{{Digits}}){{Spaces}}(?<amount>{{Number}})", "regex": true }, "columns": [ { "name": "quantity", "dataType": "integer" }, { "name": "amount", "dataType": "decimal" } ] }, "id": 10 } ], "culture": "en-US", "description": "", "options": { "ocrMode": "auto", "ocrLanguage": "eng", "ocrResolution": 300, "ocrImageFilters": "", "ocrWhiteList": "", "ocrBlackList": "" } }

program.php

      
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document Parse Results</title> </head> <body> <?php // Get submitted form data $apiKey = $_POST["apiKey"]; // The authentication key (API Key). Get your own by registering at https://app.pdf.co/documentation/api // 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE. // * If you already have the direct PDF file link, go to the step 3. // Create URL $url = "https://api.pdf.co/v1/file/upload/get-presigned-url" . "?name=" . $_FILES["fileInput"]["name"] . "&contenttype=application/octet-stream"; // Create request $curl = curl_init(); curl_setopt($curl, CURLOPT_HTTPHEADER, array("x-api-key: " . $apiKey)); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // Execute request $result = curl_exec($curl); if (curl_errno($curl) == 0) { $status_code = curl_getinfo($curl, CURLINFO_HTTP_CODE); if ($status_code == 200) { $json = json_decode($result, true); // Get URL to use for the file upload $uploadFileUrl = $json["presignedUrl"]; // Get URL of uploaded file to use with later API calls $uploadedFileUrl = $json["url"]; // 2. UPLOAD THE FILE TO CLOUD. $localFile = $_FILES["fileInput"]["tmp_name"]; $fileHandle = fopen($localFile, "r"); curl_setopt($curl, CURLOPT_URL, $uploadFileUrl); curl_setopt($curl, CURLOPT_HTTPHEADER, array("content-type: application/octet-stream")); curl_setopt($curl, CURLOPT_PUT, true); curl_setopt($curl, CURLOPT_INFILE, $fileHandle); curl_setopt($curl, CURLOPT_INFILESIZE, filesize($localFile)); // Execute request curl_exec($curl); fclose($fileHandle); if (curl_errno($curl) == 0) { $status_code = curl_getinfo($curl, CURLINFO_HTTP_CODE); if ($status_code == 200) { // Read all template texts $templateText = file_get_contents($_FILES["fileTemplate"]["tmp_name"]); // 3. PARSE UPLOADED PDF DOCUMENT ParseDocument($apiKey, $uploadedFileUrl, $templateText); } else { // Display request error echo "<p>Status code: " . $status_code . "</p>"; echo "<p>" . $result . "</p>"; } } else { // Display CURL error echo "Error: " . curl_error($curl); } } else { // Display service reported error echo "<p>Status code: " . $status_code . "</p>"; echo "<p>" . $result . "</p>"; } curl_close($curl); } else { // Display CURL error echo "Error: " . curl_error($curl); } // Insert parsed output to db function InsertToDb($resultFileUrl) { $servername = "localhost"; $username = "root"; $password = ""; $dbname = "sample_db"; // Create connection $conn = new mysqli($servername, $username, $password, $dbname); // Check connection if ($conn->connect_error) { die("Connection failed: " . $conn->connect_error); } //read the json file contents $jsondata = file_get_contents($resultFileUrl); $data = json_decode(preg_replace('/[\x00-\x1F\x80-\xFF]/', '', $jsondata), true); //var_dump($data); $invoiceno = $data['objects'][0]['value']; $invoicedate = $data['objects'][1]['value']; $invoicetotal = $data['objects'][2]['value']; // echo "Invoice No: " . $invoiceno; // echo "Invoice Date: " . $invoicedate; // echo "Invoice Total: " . $invoicetotal; $sql = "INSERT INTO sample_table (inv_no, inv_date, inv_total) VALUES ('$invoiceno', '$invoicedate', '$invoicetotal')"; if ($conn->query($sql) === TRUE) { echo "New record created successfully"; } else { echo "Error: " . $sql . "<br>" . $conn->error; } $conn->close(); } function ParseDocument($apiKey, $uploadedFileUrl, $templateText) { // (!) Make asynchronous job $async = TRUE; // Prepare URL for Document parser API call. // See documentation: https://apidocs.pdf.co/?#1-pdfdocumentparser $url = "https://api.pdf.co/v1/pdf/documentparser"; // Prepare requests params $parameters = array(); $parameters["url"] = $uploadedFileUrl; $parameters["template"] = $templateText; $parameters["async"] = $async; // Create Json payload $data = json_encode($parameters); // Create request $curl = curl_init(); curl_setopt($curl, CURLOPT_HTTPHEADER, array("x-api-key: " . $apiKey, "Content-type: application/json")); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_POST, true); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, $data); // Execute request $result = curl_exec($curl); echo $result . "<br/>"; if (curl_errno($curl) == 0) { $status_code = curl_getinfo($curl, CURLINFO_HTTP_CODE); if ($status_code == 200) { $json = json_decode($result, true); if ($json["error"] == false) { // URL of generated JSON file that will available after the job completion $resultFileUrl = $json["url"]; // Asynchronous job ID $jobId = $json["jobId"]; // Check the job status in a loop do { $status = CheckJobStatus($jobId, $apiKey); // Possible statuses: "working", "failed", "aborted", "success". // Display timestamp and status (for demo purposes) echo "<p>" . date(DATE_RFC2822) . ": " . $status . "</p>"; if ($status == "success") { // Display link to JSON file with information about parsed fields echo "<div><h2>Parsing Result:</h2><a href='" . $resultFileUrl . "' target='_blank'>" . $resultFileUrl . "</a></div>"; //Calls InsertToDb function to get key value pair from JSON file InsertToDb($resultFileUrl); break; } else if ($status == "working") { // Pause for a few seconds sleep(3); } else { echo $status . "<br/>"; break; } } while (true); } else { // Display service reported error echo "<p>Error: " . $json["message"] . "</p>"; } } else { // Display request error echo "<p>Status code: " . $status_code . "</p>"; echo "<p>" . $result . "</p>"; } } else { // Display CURL error echo "Error: " . curl_error($curl); } } function CheckJobStatus($jobId, $apiKey) { $status = null; // Create URL $url = "https://api.pdf.co/v1/job/check"; // Prepare requests params $parameters = array(); $parameters["jobid"] = $jobId; // Create Json payload $data = json_encode($parameters); // Create request $curl = curl_init(); curl_setopt($curl, CURLOPT_HTTPHEADER, array("x-api-key: " . $apiKey, "Content-type: application/json")); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_POST, true); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, $data); // Execute request $result = curl_exec($curl); if (curl_errno($curl) == 0) { $status_code = curl_getinfo($curl, CURLINFO_HTTP_CODE); if ($status_code == 200) { $json = json_decode($result, true); $status = $json["status"]; if ($json["status"] == "failed") { // Display service reported error echo "<p>Error: " . $json["message"] . "</p>"; } } else { // Display request error echo "<p>Status code: " . $status_code . "</p>"; echo "<p>" . $result . "</p>"; } } else { // Display CURL error echo "Error: " . curl_error($curl); } // Cleanup curl_close($curl); return $status; } ?> </body> </html>

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