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PHP Integrating PHP with Databases Limiting Records in SQL Setting LIMITs

Notice: Array to string conversion in /home/treehouse/workspace/inc/functions.php on line 129

i can't figure out what the problem is here php 127 function get_item_html($item) { 128 $output = "<li><a href='details.php?id=" 129 . $item . "'><img src='" 130 . $item["img"] . "' alt='" . $item["title"] . "' />" . "<p>View Details</p>" . "</a></li>"; return $output; }
link to workspace https://teamtreehouse.com/workspaces/41456934