Error message

• Warning: Invalid argument supplied for foreach() in element_children() (line 6594 of /home/orlynitzan/public_html/includes/common.inc).
• Warning: Illegal string offset '#children' in drupal_render() (line 6051 of /home/orlynitzan/public_html/includes/common.inc).
• Warning: Illegal string offset '#children' in drupal_render() (line 6061 of /home/orlynitzan/public_html/includes/common.inc).
• Warning: Illegal string offset '#children' in drupal_render() (line 6099 of /home/orlynitzan/public_html/includes/common.inc).
• Warning: Illegal string offset '#printed' in drupal_render() (line 6106 of /home/orlynitzan/public_html/includes/common.inc).
• Notice: Use of undefined constant php - assumed 'php' in include() (line 106 of /home/orlynitzan/public_html/sites/all/themes/zen/templates/node--simple_with_form.tpl.php).