What is the best method to detect if a user has the Flash plugin installed in their browser for a website?

To detect if a user has the Flash plugin installed in their browser for a website, you can use JavaScript to check the navigator.plugins array for the presence of the Flash plugin. If the Flash plugin is found in the array, then the user has it installed. 

<?php
echo '<script>';
echo 'if (navigator.plugins && navigator.plugins.length) {';
echo '  var flashPlugin = navigator.plugins["Shockwave Flash"];';
echo '  if (flashPlugin) {';
echo '    console.log("Flash plugin is installed");';
echo '  } else {';
echo '    console.log("Flash plugin is not installed");';
echo '  }';
echo '} else {';
echo '  console.log("No plugins detected");';
echo '}';
echo '</script>';
?>

Keywords

PHP Flash plugin browser detection user agent get_browser()

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