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PHP Extension Examples

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(PHP Extension) Google Cloud Vision Text Detection

Demonstrates calling the Google Cloud Vision for text detection (performs Optical Character Recognition). "Detects and extracts text within an image with support for a broad range of languages. It also features automatic language identification." See https://cloud.google.com/vision/docs/detecting-text

Chilkat PHP Downloads

PHP Extension for Windows, Linux, MAC OS X,
Alpine Linux, Solaris, OpenBSD, FreeBSD,
and Linux armhf/aarch64

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// Build the following request:

// {
//   "requests": [
//     {
//       "image": {
//         "content": "/9j/7QBEUGhvdG9zaG9...base64-encoded-image-content...fXNWzvDEeYxxxzj/Coa6Bax//Z"
//       },
//       "features": [
//         {
//           "type": "TEXT_DETECTION"
//         }
//       ]
//     }
//   ]
// }

// Use this online tool to generate the code from sample JSON: 
// Generate Code to Create JSON

// Load an image file.
$imageData = new CkBinData();
// This image file contains some text...
$success = $imageData->LoadFile('qa_data/jpg/text.jpg');
if ($success != true) {
    print 'Failed to load image file.' . "\n";
    exit;
}

// Create the above JSON.
$json = new CkJsonObject();
$json->UpdateBd('requests[0].image.content','base64',$imageData);
$json->UpdateString('requests[0].features[0].type','TEXT_DETECTION');

// Send the following POST with the HTTP request body containing the above JSON.
// POST https://vision.googleapis.com/v1/images:annotate?key=YOUR_API_KEY

$http = new CkHttp();
$sb = new CkStringBuilder();
$url = 'https://vision.googleapis.com/v1/images:annotate?key=YOUR_API_KEY';
// resp is a CkHttpResponse
$resp = $http->PostJson3($url,'application/json',$json);
if ($http->get_LastMethodSuccess() != true) {
    print $http->lastErrorText() . "\n";
    exit;
}

print 'status = ' . $resp->get_StatusCode() . "\n";

// A 200 response status indicate success.
if ($resp->get_StatusCode() != 200) {
    print $resp->bodyStr() . "\n";
    print 'Failed.' . "\n";

    exit;
}

$sbResponseBody = new CkStringBuilder();
$resp->GetBodySb($sbResponseBody);
$sbResponseBody->WriteFile('qa_output/textDetectResponse.json','utf-8',false);
$json->LoadSb($sbResponseBody);

// The response is a JSON document like this:

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

// {
//   "responses": [
//     {
//       "textAnnotations": [
//         {
//           "locale": "en",
//           "description": "Chilkat is a cross-language, cross-platform\nAPl providing 90+ classes for many Internet\nprotocols, formats, and algorithms.\n",
//           "boundingPoly": {
//             "vertices": [
//               {
//                 "x": 17,
//                 "y": 14
//               },
// 	...
//             ]
//           }
//         ],
//         "text": "Chilkat is a cross-language, cross-platform\nAPl providing 90+ classes for many Internet\nprotocols, formats, and algorithms.\n"
//       }
//     }
//   ]
// }

// The parsing code generated from the online tool:

$i = 0;
$count_i = $json->SizeOfArray('responses');
while ($i < $count_i) {
    $json->put_I($i);
    $fullTextAnnotationText = $json->stringOf('responses[i].fullTextAnnotation.text');
    $j = 0;
    $count_j = $json->SizeOfArray('responses[i].textAnnotations');
    while ($j < $count_j) {
        $json->put_J($j);
        $locale = $json->stringOf('responses[i].textAnnotations[j].locale');
        $description = $json->stringOf('responses[i].textAnnotations[j].description');
        $k = 0;
        $count_k = $json->SizeOfArray('responses[i].textAnnotations[j].boundingPoly.vertices');
        while ($k < $count_k) {
            $json->put_K($k);
            $x = $json->IntOf('responses[i].textAnnotations[j].boundingPoly.vertices[k].x');
            $y = $json->IntOf('responses[i].textAnnotations[j].boundingPoly.vertices[k].y');
            $k = $k + 1;
        }

        $j = $j + 1;
    }

    $j = 0;
    $count_j = $json->SizeOfArray('responses[i].fullTextAnnotation.pages');
    while ($j < $count_j) {
        $json->put_J($j);
        $width = $json->IntOf('responses[i].fullTextAnnotation.pages[j].width');
        $height = $json->IntOf('responses[i].fullTextAnnotation.pages[j].height');
        $k = 0;
        $count_k = $json->SizeOfArray('responses[i].fullTextAnnotation.pages[j].property.detectedLanguages');
        while ($k < $count_k) {
            $json->put_K($k);
            $languageCode = $json->stringOf('responses[i].fullTextAnnotation.pages[j].property.detectedLanguages[k].languageCode');
            $k = $k + 1;
        }

        $k = 0;
        $count_k = $json->SizeOfArray('responses[i].fullTextAnnotation.pages[j].blocks');
        while ($k < $count_k) {
            $json->put_K($k);
            $blockType = $json->stringOf('responses[i].fullTextAnnotation.pages[j].blocks[k].blockType');

            // json1 is a CkJsonObject
            $json1 = $json->ObjectOf('responses[i].fullTextAnnotation.pages[j].blocks[k]');
            $i1 = 0;
            $count_i1 = $json1->SizeOfArray('property.detectedLanguages');
            while ($i1 < $count_i1) {
                $json1->put_I($i1);
                $languageCode = $json1->stringOf('property.detectedLanguages[i].languageCode');
                $i1 = $i1 + 1;
            }

            // json1 is a CkJsonObject
            $json1 = $json->ObjectOf('responses[i].fullTextAnnotation.pages[j].blocks[k]');
            $i1 = 0;
            $count_i1 = $json1->SizeOfArray('boundingBox.vertices');
            while ($i1 < $count_i1) {
                $json1->put_I($i1);
                $x = $json1->IntOf('boundingBox.vertices[i].x');
                $y = $json1->IntOf('boundingBox.vertices[i].y');
                $i1 = $i1 + 1;
            }

            // json1 is a CkJsonObject
            $json1 = $json->ObjectOf('responses[i].fullTextAnnotation.pages[j].blocks[k]');
            $i1 = 0;
            $count_i1 = $json1->SizeOfArray('paragraphs');
            while ($i1 < $count_i1) {
                $json1->put_I($i1);
                $j1 = 0;
                $count_j1 = $json1->SizeOfArray('paragraphs[i].property.detectedLanguages');
                while ($j1 < $count_j1) {
                    $json1->put_J($j1);
                    $languageCode = $json1->stringOf('paragraphs[i].property.detectedLanguages[j].languageCode');
                    $j1 = $j1 + 1;
                }

                $j1 = 0;
                $count_j1 = $json1->SizeOfArray('paragraphs[i].boundingBox.vertices');
                while ($j1 < $count_j1) {
                    $json1->put_J($j1);
                    $x = $json1->IntOf('paragraphs[i].boundingBox.vertices[j].x');
                    $y = $json1->IntOf('paragraphs[i].boundingBox.vertices[j].y');
                    $j1 = $j1 + 1;
                }

                $j1 = 0;
                $count_j1 = $json1->SizeOfArray('paragraphs[i].words');
                while ($j1 < $count_j1) {
                    $json1->put_J($j1);
                    $k1 = 0;
                    $count_k1 = $json1->SizeOfArray('paragraphs[i].words[j].property.detectedLanguages');
                    while ($k1 < $count_k1) {
                        $json1->put_K($k1);
                        $languageCode = $json1->stringOf('paragraphs[i].words[j].property.detectedLanguages[k].languageCode');
                        $k1 = $k1 + 1;
                    }

                    $k1 = 0;
                    $count_k1 = $json1->SizeOfArray('paragraphs[i].words[j].boundingBox.vertices');
                    while ($k1 < $count_k1) {
                        $json1->put_K($k1);
                        $x = $json1->IntOf('paragraphs[i].words[j].boundingBox.vertices[k].x');
                        $y = $json1->IntOf('paragraphs[i].words[j].boundingBox.vertices[k].y');
                        $k1 = $k1 + 1;
                    }

                    $k1 = 0;
                    $count_k1 = $json1->SizeOfArray('paragraphs[i].words[j].symbols');
                    while ($k1 < $count_k1) {
                        $json1->put_K($k1);
                        $text = $json1->stringOf('paragraphs[i].words[j].symbols[k].text');
                        $propertyDetectedBreakType = $json1->stringOf('paragraphs[i].words[j].symbols[k].property.detectedBreak.type');

                        // json2 is a CkJsonObject
                        $json2 = $json1->ObjectOf('paragraphs[i].words[j].symbols[k]');
                        $i2 = 0;
                        $count_i2 = $json2->SizeOfArray('property.detectedLanguages');
                        while ($i2 < $count_i2) {
                            $json2->put_I($i2);
                            $languageCode = $json2->stringOf('property.detectedLanguages[i].languageCode');
                            $i2 = $i2 + 1;
                        }

                        // json2 is a CkJsonObject
                        $json2 = $json1->ObjectOf('paragraphs[i].words[j].symbols[k]');
                        $i2 = 0;
                        $count_i2 = $json2->SizeOfArray('boundingBox.vertices');
                        while ($i2 < $count_i2) {
                            $json2->put_I($i2);
                            $x = $json2->IntOf('boundingBox.vertices[i].x');
                            $y = $json2->IntOf('boundingBox.vertices[i].y');
                            $i2 = $i2 + 1;
                        }

                        $k1 = $k1 + 1;
                    }

                    $j1 = $j1 + 1;
                }

                $i1 = $i1 + 1;
            }

            $k = $k + 1;
        }

        $j = $j + 1;
    }

    $i = $i + 1;
}

print 'Success.' . "\n";

?>

 

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