<?php
$url1 = json_decode(file_get_contents('http://www.movie.com:/retrieveMovies'), true);
foreach ($url1 as $movie) {
    $movieID = $movie['movieId'];

    $url2 = json_decode(file_get_contents(' http://movie.com/movieOne?seatNum=' . $movieID), true);
    $testingResult = $seat['avail'];
    echo "<button onclick = testBTN('" . $testingResult . "')>Seat ID</button>";
}
?>
<script>
    function testBTN(x) {
        if (x == "OK") {
            alert("Seat booked");
        }
        else {
            alert("Error in booking seats");
        }

    }
</script>