How can I disable a Drupal form submit button when it is clicked to prevent double submission?

$form['submit'] = array(
  '#type' => 'submit',
  '#value' => t('Save'),
  '#attributes' => array(
    'onclick' => 'javascript:var s=this;setTimeout(function(){s.value="Saving...";s.disabled=true;},1);',
  ),
);

Multipel status change for drupal 7

 multiple status for drupal 7 change

  $form['name'] = array(
            '#type' => 'textfield',
            '#title' => t(''),
            '#description' => '',
            '#default_value' => isset($name) ? $name : '',
            '#attributes' => array('placeholder' => array('Search')),
            '#prefix' => '<div class="span3 custom-nomargin">',
            '#suffix' => '</div>',
            '#states' => array(
            'visible' => array(
                        '#agent_order' => array(
                            array('value' => 'OrderID'),
                            array('value' => 'Event Name')
                        ),
             ),
        ),

single status for drupal 7 change

  $form['name'] = array(
        '#id' => 'name',
        '#type' => 'textfield',
        '#title' => t(''),
        '#description' => '',
        '#default_value' => isset($name) ? $name : '',
        '#attributes' => array('placeholder' => array('Search')),
        '#states' => array(
            'invisible' => array('#status' => array('value' => 'ALL'),
            ),
        ),
        '#prefix' => '<div class="span3 custom-nomargin">',
        '#suffix' => '</div>',
    );

Confirmation Dialog box for Delete or not in druapl 7

$form['delete'] = array(
    '#type' => 'submit',
    '#value' => t('Delete'),
    '#attributes' => array('onclick' => 'if(!confirm("Really Delete?")){return false;}'),
);

OR condtion in drupal 7

That's not correct, the default is AND. To use or, you need to use:

$or = db_or();
$or->condition();
$or->condition();
$query->condition($or);

Upload images in drupal 7

$form ['boxthird'] ['thirdcontentlogo'] = array (
'#type' => 'managed_file',
'#prefix' => '<div class = "row-fluid">',
'#suffix' => '</div>',
'#description' => '<p style="font-size:12px"><span class="icon-hand-right"> </span>  Uploaded Inner logo Image Size should be 165 x 61 pixels. </p></span>',
'#upload_location' => 'public://sitefiles/',
'#default_value' => isset ( $gethomestaticdata ['boxthird'] ['thirdcontentlogo'] ) ? $gethomestaticdata ['boxthird'] ['thirdcontentlogo'] : ''
);




 if ($form_state ['values'] ['kitphotos'] != "") {
$validators = array ();
$dest = file_default_scheme () . '://sitefiles/';
$file = file_save_upload ( 'slider_image', $validators, $dest );
if (is_null ( $file )) {
$file = file_load ( $form_state ['values'] ['kitphotos'] );
$file->status = "1";
$fileobject = file_save ( $file );
$buffet_img_fid = $fileobject->fid;

// file usuage
$fileusuage = new stdClass ();
$fileusuage->fid = $fileobject->fid;
file_usage_add ( $fileusuage, 'file', 'mediakit', '111' );
} else {
$file->status = "1";
$fileobject = file_save ( $file );
$buffet_img_fid = $fileobject->fid;

// file usuage
$fileusuage = new stdClass ();
$fileusuage->fid = $fileobject->fid;
file_usage_add ( $fileusuage, 'file', 'mediakit', '111' );
}
}

add class to drupal 7

$form['myboxes']['foo'] = array(
  '#attributes' => array('class' => array('ok')),
);

Active search get rebuild the form using drupal 7 seach

function specialoffers_manage_validate($form, &$form_state) {
 drupal_set_title('Special  Offers');
   
   drupal_add_css(drupal_get_path('module', 'specialoffers') .'/css/specialoffers.css');
 
   $acitiveinactive = '';
   

    $form['#method'] = 'post';
       
      $acitiveinactive = isset($_POST['filterset']['filteroptions']) ? $_POST['filterset']['filteroptions'] : 1;
 
   
       if(($acitiveinactive == '1') || ($acitiveinactive == '0') ){
               $offerstatusresult =  new  offersoverview();
               $offerstatusresult->status = $acitiveinactive;
             
               $result =   $offerstatusresult->getoffersOrderbyPosition();
       } else{
              $offersall =  new  offersoverview();
              $offersall->status = $acitiveinactive;
              $result =   $offersall->getoffersAll();
       }
   
   global $base_url;
   $form['filterset'] = array(
          '#type' => 'fieldset',
         '#prefix' => '<div class="fleetviewcontain">',
       
       );
     $form['filterset']['filteroptions'] = array(
'#id' => 'filteroptions',
'#type' => 'select',
'#options' => array( 'All' => 'All' ,'1'=>'Active','0'=>'Inactive'),
"#limit_validation_errors" => array(),
'#default_value' => $acitiveinactive,
);

$form['filterset']['btn'] = array(
'#type' => 'submit',
'#value' => 'Go',
                     

);






function specialoffers_manage_validate($form, &$form_state) {

 
if ($form_state['triggering_element']['#value'] == 'Go') {
$form_state['rebuild'] = TRUE;
return;
}

}