<?php use giovdk21\yii2SyntaxHighlighter\SyntaxHighlighter; SyntaxHighlighter::begin(['brushes' => ['php']]); $code = ""; $code .= "<?php "; $code .= "echo 'Hello World' "; $code .= "?>"; echo SyntaxHighlighter::getBlock(' <?php echo "Hello World"; $string = "Suhendra Yohana Putra"; echo "Char Length is ".strlen($string); //output : Char Length is ' . strlen("Suhendra Yohana Putra") . ' ?> ', 'php'); SyntaxHighlighter::end();