$this->getStyleSheet();
 
Load stylesheet in header
 
<?php echo $this->getStyleSheet('main.css')?>

$this->getThemePath();
 
Use to load an image from theme image directory
 
<img src="<?=$this->getThemePath()?>/images/photo.png">
 
OR
 
<?php
  $v = View::getInstance();
  $v->getThemePath();
?>

Use a Theme Path In a Block
 
<?php
  $v = View::getInstance();
  $themePath = $v->getThemePath();
?>
 
  To display an image from your themes image directory
 
  <img src="<?php echo $themePath ?>/images/photo.png">

<?php 
    $a = new Area('Area Name');
    $a->display($c);
?>

<?php 
$a = new Area('Area Name');
$a->setBlockLimit(1);
$a->display($c);
?>

<?php 
$a = new Area('Area Name');
$a->setBlockWrapperStart('<div class="CLASS_NAME">');
$a->setBlockWrapperEnd('</div>');
$a->display($c); 
?>		
<

<?php 
  if ($c->isEditMode()) { ?>
    <div style="min-height: 20px;"> </div>
  <?php } ?>

$app = \Concrete\Core\Support\Facade\Application::getFacadeApplication();
 
$urlHelper = $app->Make('helper/concrete/urls');
$blockType = BlockType::getByHandle('heat_calculator');
$localPath = $urlHelper->getBlockTypeAssetsURL($blockType);

<?php
$stack = Stack::getByName('STACK_NAME');
$stack->display();
?>

<?php
  $stm = new StackList();
  $stm->filterByGlobalAreas(); 
  // Use filterByGlobalAreas() or filterByUserAdded()
  $stacks = $stm->get();
 
  foreach($stacks as $st) {
    print  $st->getCollectionName();
    //  Use $st->getCollectionName(),  $st->getCollectionHandle(), etc.
  }
?>

<img src="<?php echo $this->getBlockURL() ?>/images/image.png">

<?php
  /* Check if page exists. */
 
  use PageType;
  $pageType = PageType::getByHandle('[page_type_handle]');
 
  /* Addd new page if does not exist. */
 
  if(!is_object($pageType)) {
    $data['ctHandle'] = '[page_type_handle]';
    $data['ctName'] = t('[page_type_name]');
    $newPage = PageType::add($data, $pkg);
  }
?>

<?php
  $page=Page::getByID($c->getCollectionParentID());
  echo $page->getCollectionName();
?>

<?php 
  $c = Page::getCurrentPage();
  $app = \Concrete\Core\Support\Facade\Application::getFacadeApplication();
  $nh = $app->Make('helper/navigation');
  $cobj = $nh->getTrailToCollection($c);
 
  $rcobj = array_reverse($cobj);
    if(is_object($rcobj[1])) {
      $pID  = $rcobj[1]->getCollectionID();
      $page = Page::getByID($pID);  
      echo $page->getCollectionName();
    }else{
      echo $c->getCollectionName();
    }  
?>

<?php
$parent = Page::getByID($c->getCollectionParentID());
$parentLink = $parent->getCollectionLink();
?>
<a href="<?php echo $parentLink; ?>">Up</a>

$page = Page::getCurrentPage();

<?php
$c->getCollectionDateAdded('F j, Y')
?>
 
Display date page was added.
 
<?php echo $c->getCollectionDateAdded('F j, Y') ?>

<?php
  $page=Page::getByID($c->getCollectionParentID());
 
  if ( $page->getCollectionName() == 'es' ) {
    echo '<a href="/index.php/gallery">Galería</a>';
  } else {
    echo '<a href="/index.php/gallery">Gallery</a>';
  }
?>

$c->getCollectionDescription();
 
Display page description
 
<?php echo $c->getCollectionDescription() ?>

$c->getCollectionHandle();
 
Create a div for adding styles to individual pages
 
<div id="<?php echo $c->getCollectionHandle() ?> "> </div>
 
Add a class to a div based on page handle
 
<div id="header" class="<?php echo $c->getCollectionHandle() ?>"> </div>

$c->getCollectionID();
 
Display page ID
 
<?php echo $c->getCollectionID() ?>

$c->getCollectionName();
 
Display page name
 
<?php echo $c->getCollectionName() ?>

$c->getCollectionParentID();
 
Display parent page page ID
 
<?php echo $c->getCollectionParentID() ?>

$pageOwner = $c->getCollectionUserID()

<?php
$app = \Concrete\Core\Support\Facade\Application::getFacadeApplication();
$nh = $app->Make('helper/navigation');
$URL = $nh->getCollectionURL($c);
?>

$c->getCollectionTypeName();
 
Set a class to a page types name.
 
<?php 
  if($c->getCollectionTypeName() == 'Full Width'){ 
    echo 'class="full-width"';
  }
?>

<?php
echo Config::get('concrete.site');
?>

<?php echo $c->getPageTemplateHandle() ?>

<?php
$app = \Concrete\Core\Support\Facade\Application::getFacadeApplication();
$dateHelper = $app->Make('helper/date');
 
echo $dateHelper->getSystemDateTime($c->getCollectionDatePublic(), $mask = 'l, F d, Y  g:ia')
?>

<?php
// Load Date Helper
$app = \Concrete\Core\Support\Facade\Application::getFacadeApplication();
$date = $app->Make('helper/date'); 
 
// Get Blocks in Main area
foreach($c->getBlocks('Main') as $b) {
   $bDate[$i] = $b->getBlockDateLastModified();
   $i ++;
}
 
// Reverse Sort Date Array
rsort( $bDate );
 
//Echo Date and Time Page last Edited
echo $date->getLocalDateTime($bDate[0],$mask = 'm-d-Y g:i:s');
?>

<?php 	
  $bt = BlockType::getByHandle('autonav');
  $bt->controller->displayPages = 'top'; // 'top', 'above', 'below', 'second_level', 'third_level', 'custom', 'current'
  $bt->controller->displayPagesCID = ''; // if display pages is set ‘custom’
  $bt->controller->orderBy = 'display_asc';  // 'chrono_desc', 'chrono_asc', 'alpha_asc', 'alpha_desc', 'display_desc','display_asc'             
  $bt->controller->displaySubPages = 'all';  //none', 'all, 'relevant_breadcrumb', 'relevant'          
  $bt->controller->displaySubPageLevels = 'all'; // 'enough', 'enough_plus1', 'all', 'custom'
  $bt->controller->displaySubPageLevelsNum = ''; // if displaySubPages is set 'custom'
  $bt->render('view'); // for template 'templates/template_name';
?>

<?php
namespace
use \Concrete\Core\Attribute\Type as AttributeType;
use CollectionAttributeKey;
 
// add checkbox attribute
$att = AttributeType::getByHandle('boolean');
$testAttribute3=CollectionAttributeKey::getByHandle('attribute_handle');
if( !is_object($testAttribute3) ) {
    CollectionAttributeKey::add($att, array('akHandle' => 'attribute_handle', 'akName' => t('Attribute Name'), 'akIsSearchable' => true, 'akCheckedByDefault' => true), $pkg);
}
?>

<?php
  if ($c->getCollectionAttributeValue(attribute_hande)) {
  Do Something Here;
  }
?>

$c->getCollectionAttributeValue()
 
Display a page text attribute
 
<?php echo $c->getCollectionAttributeValue('attribute_hande') ?>
 
*In some blocks you may need to substitute with $cobj

$atKey = CollectionAttributeKey::getByHandle('handle');

<img src="<?php echo ($c->getAttribute('attribute_handle')->getVersion()->getRelativePath());?>" width="120px" height="160px">

<?php
  if($c->getAttribute('attribute_name')) {
    echo '<a href="' . $c->getAttribute('attribute_handle')->getVersion()->getRelativePath() .' ">Download PDF</a>';
  }
?>

<?php
$c->getAttribute('attribute_handle')->getFileName() 
?>

(in view.php)
<?php
$atKeys = CollectionAttributeKey::getList();
 
foreach($atKeys as $ak) {
  echo  $ak->akName . '<br/>';
}
?>
 
(in controller.php)
 
<?php
namespace
use View;
 
$atKeys = CollectionAttributeKey::getList();
 
foreach($atKeys as $ak) {
  pageAttributes[] =  $ak->akName;
}

(in view.php)
<?php
$atKeys = CollectionAttributeKey::getList();
 
foreach($atKeys as $ak) {
  echo  $ak->getAttributeKeyName() . '<br/>';
}
?>
 
(in controller.php)
 
<?php
namespace
use View;
 
$atKeys = CollectionAttributeKey::getList();
 
foreach($atKeys as $ak) {
  pageAttributes[] =  $ak->getAttributeKeyName();
}

(in view.php)
$atSet = AttributeSet::getByHandle('attribute_set_handle');
$atKeys = $atSet->getAttributeKeys();
 
foreach($atKeys as $ak) {
  echo $ak->akName;
}
 
(in controller.php)
 
namespace
use \Concrete\Core\Attribute\Set as AttributeSet;
 
$atSet = AttributeSet::getByHandle('attribute_set_handle');
$atKeys = $atSet->getAttributeKeys();
 
foreach($atKeys as $ak) {
  $setNmes[] = $ak->akName;
}

(in view.php)
$atSet = AttributeSet::getByHandle('attribute_set_handle');
$atKeys = $atSet->getAttributeKeys();
 
foreach($atKeys as $ak) {
  echo $ak->getAttributeKeyName();
}
 
(in controller.php)
 
namespace
use \Concrete\Core\Attribute\Set as AttributeSet;
 
$atSet = AttributeSet::getByHandle('attribute_set_handle');
$atKeys = $atSet->getAttributeKeys();
 
foreach($atKeys as $ak) {
  $setNmes[] = $ak->getAttributeKeyName();
}

<?php 
  use CollectionAttributeKey;
 
  $ak = CollectionAttributeKey::getByHandle('attribute_handle');
  if ( is_object($ak)) {
    $type = $ak->getAttributeType();
    $controller = $type->getController();
    $controller->setAttributeKey($ak);
    $options = $controller->getOptions();
 
    foreach($options as $option){
      print $option . '<br/>';
    }
  }
 ?>				

<?php	
  $selectedOptions = $c->getCollectionAttributeValue('attribute_handle');
  if (is_object($selectedOptions)) {
    foreach ($selectedOptions as $opt) {
	echo $opt;
    }
  }
?>				

<?php 
  // add select with attribute set page attributes 
 
  // Set attribute category	
  $akCat = AttributeKeyCategory::getByHandle('collection');
  $akCat->setAllowAttributeSets(AttributeKeyCategory::ASET_ALLOW_SINGLE);
  $akCatSet = $akCat->addSet('attribute_set_handle', t('Attribute Set Name'),$pkg);
 
  $atType = AttributeType::getByHandle('select');
 
  // test for existing attribute
  $myAttribute = CollectionAttributeKey::getByHandle('attribute_handle'); 
 
  // Add attribute
  if( !is_object($myAttribute) ) {
 
    CollectionAttributeKey::add($atType, 
    array('akHandle' => 'attribute_hande', 
    'akName' => t('Attribute Name'), 
    'akIsSearchable' => true, 
    'akIsSearchableIndexed' => true,
    'akSelectAllowMultipleValues' => false,
    'akSelectAllowOtherValues' => false,
    'akSelectOptionDisplayOrder' => 'alpha_asc',  // alpha_asc or popularity_desc
    ),$pkg)->setAttributeSet($akCatSet); 
 
    //Add option values
    $myAttribute = CollectionAttributeKey::getByHandle('attribute_handle');
    SelectAttributeTypeOption::add( $mMakerAttribute, 'Select Option One');
    SelectAttributeTypeOption::add( $mMakerAttribute, 'Select Option Two');
    SelectAttributeTypeOption::add( $mMakerAttribute, 'Select Option Three');
 }
?>

useConcrete\Core\Attribute\Context\FrontendFormContext;
use Concrete\Core\Attribute\Form\Renderer;
use Concrete\Core\Attribute\Category\CategoryService;
use Concrete\Core\Support\Facade\Application;
use Concrete\Core\Page\Page;
 
 
  $app = Application::getFacadeApplication();
  $service = $app->make(CategoryService::class);
  $categoryEntity = $service->getByHandle('collection');
  $category = $categoryEntity->getController();
  $attribute_key = 'exclude_nav';
  $akt = $category->getByHandle($attribute_key);
 
 
  $renderer = new Renderer(new FrontendFormContext(), Page::getCurrentPage());
  $renderer->buildView($akt)->render();

 $u = new User();
 
 $ui = $app->make(\Concrete\Core\User\UserInfoRepository::class)->getByID($u->getUserID());
 
 $ui->getUserName()
 $ui->getUserEmail()
 $ui->getUserPublicProfileURL()
 $ui->getUserID()
 $ui->getUserDateAdded()
 $ui->getNumLogins()
 $ui->getLastLogin()
 $ui->getLastIPAddress()
 $ui->getUserTimezone()
 $ui->getUserBadges()

<?php
  use UserAttributeKey;
  //add boolean type user attribute 
  $boolt = AttributeType::getByHandle('boolean');
  $attributeHandle=UserAttributeKey::getByHandle('attribute_handle');
 
  if( !is_object($attributeHandle) )
    UserAttributeKey::add($boolt, array('akHandle' => 'atribute_handle', 'akName' => t('Attribute name'), 'akIsSearchable' => false, 'uakProfileEdit' => false, 'uakRegisterEdit' => false, 'akCheckedByDefault' => false));
}
?>

<?php
  use UserAttributeKey;
  $attributeHandle = UserAttributeKey::getByHandle('atribute_handle');
   if( is_object($attributeHandle) )
     $attributeHandle->delete();
}
?>

<?php
  $u = new User();
  if($u->isLoggedIn()) {
    $ui = UserInfo::getByID($u->getUserID());
    echo $ui->getAttribute('attribute_name');	
}
?>

<?php
  $u = new user();
  $ui = UserInfo::getByID($u->getUserID());
  $ui->setAttribute('attributenName', 'value');
?>

<?php
  use UserAttributeKey;
  $attributeKey = UserAttributeKey::getByHandle('user_attribute_name');
  if( is_object($attributeKey) )
    $attributeKey->delete();
?>

<?php
  use \Concrete\Core\Attribute\Type as AttributeType;
  use UserAttributeKey;
 
  $ak = UserAttributeKey::getByHandle('project_name');
  $sa = new SelectAttributeTypeController(AttributeType::getByHandle('select'));
  $sa->setAttributeKey($ak);
  $values = $sa->getOptions();
 
  foreach ($values as $v) {
    echo $v->value;
  }
?>

<?php
  $u = new User();
  $u->getByUserID($uID);
  $groupName = Group::getByName('Name_Of_Your_Group');
  $u->enterGroup($groupName);
?>

<?php
    use Group;
    use GroupList;
    $groupList = new GroupList();
    $groups = $groupList->get();
 
    foreach($groups as $g){
      echo Group::getByID($g)->getGroupName();
      echo '<br/>';
    }
?>	

<?php
  $u = new User();
  echo $u->getUserName();
?>

<?php 
  $u = new User();
 
  if ($u->isLoggedIn()) { ?>
    <style type="text/css">
    body { background-position: 0px 49px; }
    </style>
<?php } ?>

<?php
  $u = new User();
  if($u->isLoggedIn()) {
    echo 'Hello '.$u->getUserName();
  }
?>

<?php
  $u = new user();
  $g = Group::getByName('Administrators');
 
  if ($u->inGroup($g)||$u->isSuperUser()) {
    //do something here
  }
?>

<?php
  $f = File::getByID(FILE_ID);
  $fv = $f->getApprovedVersion();
  $path = $fv->getRelativePath();
?>

]

(in view.php)
<?php
  $fileSets = FileSet::getMySets();
  foreach ($fileSets as $fs) {
    echo $fs->getFileSetName();
  }
?>
 
$fs->getFileSetID()
$fs->getFileSetName()
$fs->getFileSetType()
 
(in controller.php
 
<?php
namespace
use FileSet;
use FileList;
 
  $fileSets = FileSet::getMySets();
  foreach ($fileSets as $fs) {
   $filesets('id' => $fs->getFileSetID(), 'name' => $fs->getFileSetName());
 }
?>

<?php  
  $fs = FileSet::createAndGetSet('FILESET_NAME', FileSet::TYPE_PUBLIC, $uID = false);
?>

<?php
  $f = File::getByID(FILE ID NUMBER);
  echo $f->getAttribute('Attrubute_name');
?>

<?php
// in a package
use Concrete\Core\Attribute\Key\CollectionKey as CollectionAttributeKey;
use \Concrete\Core\Attribute\Type as AttributeType;
 
$attribute = CollectionAttributeKey::getByHandle('my_attribute');
if ( !is_object($attribute)) {
  $att = AttributeType::getByHandle('select');
  // add attribute 
  CollectionAttributeKey::add($att, array('akHandle' => 'my_attribute', 
    'akName' => t('My Attribute'), 
    'akIsSearchableIndexed' => true, 
    'akIsSearchable' => true, 
    'akSelectAllowMultipleValues' => true, 
    'akSelectAllowOtherValues' => true, 
    'akSelectOptionDisplayOrder' => 'alpha_asc'),$pkg); 
 
  // or add to attribute and assign to an attribute set
  // CollectionAttributeKey::add($att, array('akHandle' => 'my_attribute', 
  // 'akName' => t('My Attribute'), 
  // 'akIsSearchableIndexed' => true, 
  // 'akIsSearchable' => true, 
  // 'akSelectAllowMultipleValues' => true, 
  // 'akSelectAllowOtherValues' => true, 
  // 'akSelectOptionDisplayOrder' => 'alpha_asc'),$pkg)->setAttributeSet($akCatSet); 
  $addAttribute = CollectionAttributeKey::getByHandle('my_attribute');
}

<?php
  use \Concrete\Core\Attribute\Key\Category as AttributeKeyCategory;
 
  $akCat = AttributeKeyCategory::getByHandle('collection');
  $akCat->setAllowAttributeSets(AttributeKeyCategory::ASET_ALLOW_SINGLE);
  $akCatSet = $akCat->addSet('my_attribute_set', t('My Attribute Set'),$pkg);

(in view.php)
<?php
  $fs = FileSet::getByName('Your File Set');
  $fl = new FileList();
  $fl->filterBySet($fs);
  $fl->sortBy('fsDisplayOrder', 'asc');
  $files = $fl->get();
 
  foreach($files as $f) {
    echo $f->getFileName();
    echo $f->getTitle(); 
    echo $f->getAttribute("width");
    echo $f->getDownloadURL();
    echo $f->getRelativePath();
    echo $f->getDescription();
    echo $f->getAttribute('attribute_name');
  }
?>
 
(in controller.php)
<?php
namespace
use FileSet;
use FileList;
 
  $fs = FileSet::getByName('Your File Set');
  $fl = new FileList();
  $fl->filterBySet($fs);
  $fl->sortBy('fsDisplayOrder', 'asc');
  $files = $fl->get();
?>  

<?php
    use FileImporter;
    $fi = new FileImporter();
    $newFile = $fi->import($pathToFile, $nameOfFile, $fileObject);
  }
?>

<?php
  // function in controller
    use FileImporter; 
    $fi = new FileImporter();
    $newFile = $fi->import($_FILES['fileName']['tmp_name'],
    $_FILES['fileName']['name']);
  }
?>

<?php
  // when uploading with a form
  function action_file_upload()	{
    use FileImporter;
    $fi = new FileImporter();
    $newFile = $fi->import($_FILES['fileName']['tmp_name'],
    $_FILES['fileName']['name']);
 
    // add file to file set		
    use FileSet;
    $fs = FileSet::createAndGetSet('FILE_SET_NAME', FileSet::TYPE_PUBLIC, 
    $uID = false);
    $fsf = $fs->addFileToSet($newFile);	
  }
?>

(in view.php)
 
<?php
  use Pagelist; 
  $pl = new PageList();
 
    ... Filtering and Sorting Options ...
 
   // Get the page List Results 
  $pages = $pl->get() Get all pages that match filter/sort criteria.
?>
 
(in controller.php)
 
<?php
namespace
use Concrete\Core\Page\PageList;
 
  $pl = new PageList();
 
    ... Filtering and Sorting Options ...
 
   // Get the page List Results 
  $pages = $pl->get() Get all pages that match filter/sort criteria.
?>

<?php
  // Available Filters
  $pl->ignorePermissions(); // Don't check the permissions of the logged-in user.
  $pl->ignoreAliases(); // Ignore aliased pages.
  $pl->includeSystemPages(); // Include system pages
  $pl->displayUnapprovedPages(); // Include pages that have not been approved.
  $pl->filterByKeywords($keywords); // Filters files by keywords.
  $pl->filterByName($name, $exact = false); // Filter page name.
  $pl->filterByPath($path, $includeAllChildren = true); // Filters pages by path, children true/false
  $pl->filterByParentID($cParentID); //Filters by the parent ID.
  $pl->filterByCollectionTypeID($ctID); //Displays pages of a certain page type.
  $pl->filterByUserID($userID); //Displays pages owned by a particular user ID.
  $pl->filterByIsApproved($isApproved); //Only display approved pages.
  $pl->filterByIsAlias($ia); //Filters by whether an item is an alias or not.
  $pl->filterByCollectionTypeHandle($ctHandle); //Filters by page type handles. $ctHandle can be array of page type handles.
  $pl->filterByDateAdded($date, $comparison = '='); //Filters by date the page was added. $comparison can be any MySQL comparison operator.
  $pl->filterByPublicDate($date, $comparison = '='); //Filters by public date. $comparison can be any MySQL comparison operator.
  $pl->filterByDateLastModified($date, $comparison = '='); //Filters by date the page was last modified. $comparison can be any MySQL comparison operator.
  $pl->filterByNumberOfChildren($number, $comparison = '='); //Filters by number of page children. $comparison can be any MySQL comparison operator.
  $pl->filterByAttribute($attributeKeyHandle, $value, $comparison); //Filters by attribute.
  $pl->filter($column, $value, $comparison); //Filter by MySql "WHERE" clause
 
  // Sorting Options
  $pl->sortByRelevance(); //Orders by index score descending. Only available when searching by keywords.
  $pl->sortByDisplayOrder(); //Orders by sitemap display order ascending.
  $pl->sortByDisplayOrderDescending(); // Orders by sitemap display order descending.
  $pl->sortByPublicDate(); //Orders by public date ascending.
  $pl->sortByPublicDateDescending(); //Orders by public date descending.
  $pl->sortByName(); //Orders by page name ascending.
  $pl->sortByNameDescending(); // Order by name descending
  $pl->sortBy('ak_ATTRIBUTE_HANDLE'); // Order by a page attribute
?>

<?php
  $pl = new PageList();
  $pl->filterByCollectionTypeHandle('COLLECTION_HANDLE');
  $pl->sortByDisplayOrder('alpha_asc'); // Sort alphebetically
 
  $pages = $pl->getPage();
 
  // Display Page Name and Description
  foreach ($pages as $page){
    echo $page->getCollectionName();
    echo $page->getCollectionDescription();
  }
?>

<?php
  $bt = BlockType::getByHandle('page_list');
 
  //Set Options
  $bt->controller->orderBy = 'display_asc'; // 'display_asc', 'chrono_desc', 'chrono_asc', 'alpha_asc', 'alpha_desc'
  $bt->controller->ctID = ''; // Filter by Collection Page Type ID
  $bt->controller->displayFeaturedOnly = 'false'; // If Featured Page attribute 'true', 'false' 
  $bt->controller->displayAliases = 'false'; // Display aliase pages 'true', 'false'
  $bt->controller->paginate = 'true'; // 'true', 'false'
  $bt->controller->cParentID = '6149'; // Display pages beneath this page ID
  $bt->controller->includeAllDescendents = 'true'; // 'true', 'false'						
  $bt->controller->orderBy = 'display_asc'; // 'display_asc', 'chrono_desc', 'chrono_asc', 'alpha_asc', 'alpha_desc'
  $bt->controller->showrss = 'false'; // Display RSS feed 'true', 'false'
  $bt->controller->truncateSummaries = 'true'; // 'true', 'false'
  $bt->controller->truncateChars = '128'; // Truncate length if summaries 'true'
  $bt->controller->paginate = 'true'; // 'true', 'false'
 
  // Render the block
  $bt->render('view'); // for template 'templates/template_name'
?>

<?php
  // Re-sort in view.php by an end date page attribute
  usort($pages, create_function('$a, $b', 'return $a->getAttribute("end_date") > $b->getAttribute("end_date");'));
?>

  $lang = \Localization::activeLocale();

  $app = \Concrete\Core\Support\Facade\Application::getFacadeApplication();
  $site = $app->make('site')->getSite();
  $defaultLang = $site->getDefaultLocale()->getLocale();

Create single page file: applications/single_pages/test_page.php
 
Create a controller file: applications/controllers/test_page.php 
 
Namespace and class for controller
 
<?php 
namespace Application\Controller\SinglePage;
use PageController;
 
class TestPage extends PageController
{
 
    // Add functions
    public function view()
    {
        // Whatever code you need for functions
        echo 'Hello World';
    }
 
}
?>

<?php
  use Database;
  $db = Database::connection();
 
  $sql = "SELECT * FROM [table] WHERE [column1] = ? AND [column2] = ?";
  $vals = array('[value1]', '[value2]');
  $r = $db->Execute($sql, $vals);
  $row = $r->FetchRow();
 
  echo $row[column name];
?>

<?php 
  use Database;
  $db = Database::connection();
 
  $sql = "UPDATE [table] SET [column] = ? WHERE bID = $this->bID";
  $vals = array('[value]');
  $update = $db->Execute($sql, $vals);
?>

<?php
$app = \Concrete\Core\Support\Facade\Application::getFacadeApplication();
$date = $app->Make('helper/date');
?>

Using Date Helper to format ($mask=) display of date and time.
 
<?php
 
  if($date->getSystemDateTime($c->getCollectionAttributeValue('end_date'), $mask = 'd-m-Y G:i') > $date->getLocalDateTime('now',$mask = 'd-m-Y G:i')) {
    echo 'End date is greater than today';
  }
?>

<?php
  $app = \Concrete\Core\Support\Facade\Application::getFacadeApplication();
  $date = $app->Make("helper/date");  echo $date->getLocalDateTime('now',$mask = 'd-m-Y G:i')
?>

<?php
  echo $date->getSystemDateTime($c->getCollectionAttributeValue('end_date'), $mask = 'm/d/y') 
?>

<?php
  foreach($c->getBlocks('Main') as $b) {
    $bDate[$i] = $b->getBlockDateLastModified();
    $i ++;
  }
 
  rsort( $bDate );
 
  echo $date->getLocalDateTime($bDate[0],$mask = 'm-d-Y g:i:s');
?>

<?php
  if($date->getSystemDateTime($c->getCollectionAttributeValue('end_date'), $mask = 'd-m-Y G:i') > $date->getLocalDateTime('now',$mask = 'd-m-Y G:i')) {
 
    [do something here]
 
  }
?>

a 'am' or 'pm'
A 'AM' or 'PM'
B Swatch Internet time
d day of the month, 2 digits with leading zeros; i.e. '01' to '31'
D day of the week, textual, 3 letters; i.e. 'Fri'
F month, textual, long; i.e. 'January'
g hour, 12-hour format without leading zeros; i.e. '1' to '12'
G hour, 24-hour format without leading zeros; i.e. '0' to '23'
h hour, 12-hour format; i.e. '01' to '12'
H hour, 24-hour format; i.e. '00' to '23'
i minutes; i.e. '00' to '59'
I (capital i) '1' if Daylight Savings Time, '0' otherwise.
j day of the month without leading zeros; i.e. '1' to '31'
l (lowercase 'L') day of the week, textual, long; i.e. 'Friday'
L boolean for whether it is a leap year; i.e. '0' or '1'
m month; i.e. '01' to '12'
M month, textual, 3 letters; i.e. 'Jan'
n month without leading zeros; i.e. '1' to '12'
r RFC 822 formatted date; i.e. 'Thu, 21 Dec 2000 16:01:07 +0200' (added in PHP 4.0.4)
s seconds; i.e. '00' to '59'
S English ordinal suffix, textual, 2 characters; i.e. 'th', 'nd'
t number of days in the given month; i.e. '28' to '31'
T Timezone setting of this machine; i.e. 'MDT'
U seconds since the epoch
w day of the week, numeric, i.e. '0' (Sunday) to '6' (Saturday)
Y year, 4 digits; i.e. '1999'
y year, 2 digits; i.e. '99'
z day of the year; i.e. '0' to '365'
Z timezone offset in seconds (i.e. '-43200' to '43200'). The offset for timezones west of UTC is always negative, and for those east of UTC is always positive.

<?php
  $app = \Concrete\Core\Support\Facade\Application::getFacadeApplication();
  $imageHelper = $app->Make('helper/image');
?>

<?php
  $app = \Concrete\Core\Support\Facade\Application::getFacadeApplication();
  $dh = $app->Make('helper/date');
?>

$app = \Concrete\Core\Support\Facade\Application::getFacadeApplication();
$form = $app->Make('helper/form');

$app = \Concrete\Core\Support\Facade\Application::getFacadeApplication(); 
$nh = $app->Make('helper/navigation');
 
$page = Page::getByPath('/contact');
echo $nh->getCollectionURL($page)
 
getCollectionURL(), getLinkToCollection(), getTrailToCollection() 

  $app = \Concrete\Core\Support\Facade\Application::getFacadeApplication();
  <?php echo $app->Make('editor')->outputStandardEditor('value_name', $valuet) ?>

  $app = \Concrete\Core\Support\Facade\Application::getFacadeApplication(); 
  $th = $app->Make("helper/text");
  $desc = $th->shortenTextWord($product->getDesc(), 160);
 
  alphanum(), appendXML(), asciify(), autolink(), camelcase(), decodeEntities(), email(), entities(), filterNonAlphaNum(), fnmatch(), formatXML(), handle(), highlightSearch(), makenice(), sanitize(), sanitizeFileSystem(), shortText(), shorten(), shortenTextWord(), specialchars(), twitterAutolink(), uncamelcase(), unhandle(), urlify(), wordSafeShortText() 

  $app = \Concrete\Core\Support\Facade\Application::getFacadeApplication(); 
   $token = $app->make('token');
   if($token->validate('handle_names')) {

If image exists in Image/File Attribute "product_image", display the image scaled to 100px.
 
<?php
  if($c->getAttribute('product_image')) {
    $imageHelper->outputThumbnail($c->getAttribute('product_image'),100 ,100);
  }
?>

<?php
  $file = File::getByID(id_number);
  $img = $imageHelper->getThumbnail($file, 100, 100);
?> 
 
<img src="<?php echo $img->src; ?>" width="<?php echo $img->width; ?>" height="<?php echo $img->height; ?>">

$site = Site::getSite();
<?php echo $site->getAttribute('attribute_handle') ?>

Set advanced permissions on
  define('PERMISSIONS_MODEL', 'advanced');
 
Use APC Caching (you need APC installed)
  define('CACHE_LIBRARY', 'apc');
 
Disable Zend Cache Cleaning (may improve performance)
  define('CACHE_FRONTEND_OPTIONS',
  serialize(array('automatic_cleaning_factor' => 0)));
 
Set time to 24 hour format
  define('DATE_FORM_HELPER_FORMAT_HOUR', '24');
 
Date Formatting
  define('DATE_APP_GENERIC_MDYT_FULL', 'F d, Y \a\t g:i A');
  define('DATE_APP_GENERIC_MDYT', 'n/j/Y \a\t g:i A');
  define('DATE_APP_GENERIC_MDY', 'n/j/Y');
  define('DATE_APP_GENERIC_MDY_FULL', 'F d, Y');
 
Change minimum user name length from default value 3
  define('USER_USERNAME_MINIMUM', 3);
 
Change maximum username length from default value 64
  define('USER_USERNAME_MAXIMUM', 64);
 
Change minimum password length from default value 3
  define('USER_PASSWORD_MINIMUM', 5);
 
Change maximum password length from default value 64
  define('USER_PASSWORD_MAXIMUM', 64);
 
Change session time from default of 2 hours
  define('SESSION_MAX_LIFETIME', 7200); // 2 hours
 
Set registration email notification address
  define('EMAIL_ADDRESS_REGISTER_NOTIFICATION',
  'example@domain.com');
 
Set registration email notification from address
  define('EMAIL_ADDRESS_REGISTER_NOTIFICATION_FROM',
  'example@domain.com');

Disable concrete5 marketplace integration.
define('ENABLE_MARKETPLACE_SUPPORT', false); 
 
Disable help searches in the intelligent search.
define('ENABLE_INTELLIGENT_SEARCH_HELP', false);
 
Disable marketplace add-ons appear in intelligent 
search results. 
define('ENABLE_INTELLIGENT_SEARCH_MARKETPLACE', false); 
 
Disable newsflow
define('ENABLE_NEWSFLOW_OVERLAY', false);
 
Path to the logo image. This can also be a full URL. 
This file should be 49x49 pixels.
define('WHITE_LABEL_LOGO_SRC', 'PATH TO FILE'); 
 
Alt text for the logo
define('WHITE_LABEL_APP_NAME', 'TEXT');
 
Disable Layouts.
define('ENABLE_AREA_LAYOUTS', false); 
 
Disable Custom Design for blocks or areas.
define('ENABLE_CUSTOM_DESIGN', false);
 
Disable Newsflow connect to concrete5.org to retrieve 
latest updates. 
define('ENABLE_APP_NEWS', false); 
 
Set to a valid image (either local or a remote URL), or none.
define('WHITE_LABEL_DASHBOARD_BACKGROUND_SRC', 'none');
 
Web address for today's Image
define('WHITE_LABEL_DASHBOARD_BACKGROUND_FEED', false);