Dompdf: Class 'Font_Metrics' not found

[nostalgicdodo]

I am trying to enable inline PHP but I get the following error,

Fatal error: Class 'Font_Metrics' not found in peadeff/vendor/dompdf/dompdf/src/PhpEvaluator.php(48) : eval()'d code on line 5

here is the code that I've used.

require __DIR__ . '/vendor/autoload.php';

use Dompdf\Dompdf;

ob_start();
require "template.php";
$html = ob_get_clean();

$dompdf = new DOMPDF();
$dompdf->set_option( "is_php_enabled" , true ); // the faulty statement; otherwise pdf generation works

$dompdf->load_html( $html );
$dompdf->setPaper( "A4" , "potrait" );
$dompdf->render();

file_put_contents( "output.pdf" , $dompdf->output() );

how can I fix this?

EDIT:
actually this is the faulty line
$font = Font_Metrics::get_font( "verdana" , "bold" );
within the text/php block

[bsweeney]

In 0.7.0 FontMetrics class is now instantiated and available as $fontMetrics. The wiki will be updated when we merge the develop branch back in to master.

[nostalgicdodo]

thanks.

[bsweeney]

I'll keep this issue open so we don't forget to update the wiki.

[bsweeney]

wiki is updated