<a href="#" class="text-dark launch" id="<?php echo $row->id; ?>"> Launch</a>

$('.launch').on('click', function () {
    $.ajax({
        type: 'POST',
        url: 'http://localhost/sample/run_scrape',
        success: function (status) {
            console.log(status);
        }
    });
});

public function run() {

    $html = shell_exec("phantomjs C:samplescraper.js");
    echo json_encode($html);
}

var page = require('webpage').create();
page.open('https://detectmybrowser.com/', function(status){
    console.log("Status: " + status);
    if(status === "success"){
        page.render('example.png');
    }
    phantom.exit();
});