index.php

#!/usr/bin/env php

<?php
// Example of using API4AI OCR text recognition.

// Use 'demo' mode just to try api4ai for free. Free demo is rate limited.
// For more details visit:
//   https://api4.ai

// Use 'rapidapi' if you want to try api4ai via RapidAPI marketplace.
// For more details visit:
//   https://rapidapi.com/api4ai-api4ai-default/api/ocr43/details
$MODE = 'demo';

// Your RapidAPI key. Fill this variable with the proper value if you want
// to try api4ai via RapidAPI marketplace.
$RAPIDAPI_KEY = null;

$OPTIONS = [
    'demo' => [
        'url' => 'https://demo.api4ai.cloud/ocr/v1/results',
        'headers' => ['A4A-CLIENT-APP-ID: sample']
    ],
    'rapidapi' => [
        'url' => 'https://ocr43.p.rapidapi.com/v1/results',
        'headers' => ["X-RapidAPI-Key: {$RAPIDAPI_KEY}"]
    ]
];

// Initialize request session.
$request = curl_init();

// Check if path to local image provided.
$data = ['url' => 'https://storage.googleapis.com/api4ai-static/samples/ocr-1.png'];
if (array_key_exists(1, $argv)) {
    if (strpos($argv[1], '://')) {
        $data = ['url' => $argv[1]];
    } else {
        $filename = pathinfo($argv[1])['filename'];
        $data = ['image' => new CURLFile($argv[1], null, $filename)];
    }
}

// Set request options.
curl_setopt($request, CURLOPT_URL, $OPTIONS[$MODE]['url']);
curl_setopt($request, CURLOPT_HTTPHEADER, $OPTIONS[$MODE]['headers']);
curl_setopt($request, CURLOPT_POST, true);
curl_setopt($request, CURLOPT_POSTFIELDS, $data);
curl_setopt($request, CURLOPT_RETURNTRANSFER, true);

// Execute request.
$result = curl_exec($request);
curl_close($request);

// Decode response.
$raw_response = json_decode($result, true);

// Print raw response.
echo join('',
          ["💬 Raw response:\n",
           json_encode($raw_response),
           "\n"]);

// Parse response and get recognized text.
foreach ($raw_response['results'] as &$result) {
    $text = $result['entities'][0]['objects'][0]['entities'][0]['text'];

    $page_tip = '';
    if (array_key_exists('page', $result)) {
        $page_tip = ' on page ' . $result['page'];
    }

    // Print recognized text.
    echo join('',
              ["\n💬 Recognized text",
               $page_tip,
               ":\n",
               $text,
               "\n"]);
}

?>