syntax error, unexpected T_STRING

Hi, I am a new to coding and have a problem. Can you please help me solve this issue? I was trying to follow a site on how to edit “Powered by” so its most likely on that line. Or please let me know any way to fix this. Thank you so much.

<?php _e(‘Powered by’,’Nirvana’)?> <a target=”_blank” href=”<?php

Parse error: syntax error, unexpected T_STRING in /home/content/86/7459886/html/wp-content/themes/nirvana/includes/theme-functions.php on line 412

/**
* Site info
*/
function nirvana_site_info() {
$nirvanas = nirvana_get_theme_options();
foreach ($nirvanas as $key => $value) { ${“$key”} = $value ; } ?>
<em style=”display:table;margin:0 auto;float:none;text-align:center;padding:7px 0;font-size:13px;”>
<?php _e(‘Powered by’,’Nirvana’)?> ” title=”<?php echo ‘Nirvana Theme by ‘. ‘Cryout Creations’;?>”><?php echo ‘Nirvana’ ?> &
” title=”<?php esc_attr_e(‘Semantic Personal Publishing Platform’, ‘nirvana’); ?>”> <?php printf(‘ %s.’, ‘WordPress’ ); ?>
<?php } // nirvana_site_info()
add_action(‘cryout_footer_hook’,’nirvana_site_info’,15);