a simple PHP helper script used on the Semina Verbi wiki project, to retrieve Bible quotes from the BibleGet API and store them locally

bgetHelper.php

<?php

header('Content-Type: application/json');
$DATA = new stdClass();
$DATA->http_referer = $_SERVER['HTTP_REFERER'];

/**
 * Only allow access to this script via ajax requests from this same server
 * if (!isset($_SERVER['HTTP_X_REQUESTED_WITH']) || strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) !== 'xmlhttprequest' ){
 *     $DATA->message = "Not an ajax request";
 *     return json_encode($DATA);
 * } else {
 */


    $BGET = [];
    
    if ($_SERVER['REQUEST_METHOD'] === 'POST'){

        if(isset($_POST["version"])){
            $BGET["version"] = $_POST["version"];
        } else {
            $DATA->message =  "Version not set";
            echo json_encode($DATA);
            die();
        }

        if(isset($_POST["ref"])){
            $BGET["ref"] = $_POST["ref"];
        } else {
            $DATA->message = "Quote reference not set";
            echo json_encode($DATA);
            die();
        }

    } else if($_SERVER['REQUEST_METHOD'] === 'GET'){

        if(isset($_GET["version"])){
            $BGET["version"] = $_GET["version"];
        } else {
            $DATA->message =  "Version not set";
            echo json_encode($DATA);
            die();
        }

        if(isset($_GET["ref"])){
            $BGET["ref"] = $_GET["ref"];
        } else {
            $DATA->message = "Quote reference not set";
            echo json_encode($DATA);
            die();
        }

    }

    $str = $BGET["version"] . "/" . $BGET["ref"];
    $tmp = preg_replace("/\s+/", "", $str);
    $hash = md5($tmp);
    
    if(file_exists("bibleQuotes/{$hash}.html") ){
        $DATA->message = "File $hash.html exists, we do not need to make a request to the BibleGet server";
        $DATA->html = file_get_contents("bibleQuotes/{$hash}.html");
    } else {
        $DATA->message = "File $hash.html not found, we will now make a request to the BibleGet server";
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, "https://query.bibleget.io");
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch,CURLOPT_POSTFIELDS, "query={$BGET["ref"]}&version={$BGET["version"]}&appid=SeminaVerbi&return=html");
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $output = curl_exec($ch);
        curl_close($ch);

        $output = str_replace(array("\n", "\r"), '', $output);
        $output = preg_replace('/&lt;br( ){0,1}(\/){0,1}&gt;/','',$output);
        $output = preg_replace('/&lt;(sm|pof|po|pol|pos|poif|poi|poil|po3|po3l|speaker|pr)&gt;/', '<span class="$1">', $output);
        $output = preg_replace('/&lt;\/(sm|pof|po|pol|pos|poif|poi|poil|po3|po3l|speaker|pr)&gt;/', '</span>', $output);
        $output = preg_replace('/&lt;(\/){0,1}i&gt;/', '<$1i>', $output);

        file_put_contents("bibleQuotes/{$hash}.html",$output);
        $DATA->html = $output;
    }
    
    echo json_encode($DATA,JSON_UNESCAPED_UNICODE);
    die();
/*
}
*/