( ! ) Deprecated: strip_tags(): Passing null to parameter #1 ($string) of type string is deprecated in /home/jlahijani/Sites/goodui.org/site/templates/_og.php on line 13 Call Stack #TimeMemoryFunctionLocation 10.0000466104{main}( ).../index.php:0 20.07152253816ProcessWire\Wire->__call( $method = 'execute', $arguments = [0 => TRUE] ).../index.php:55 30.07152253816ProcessWire\WireHooks->runHooks( $object = class ProcessWire\ProcessPageView { }, $method = 'execute', $arguments = [0 => TRUE], $type = ??? ).../Wire.php:484 40.07152254232ProcessWire\Wire->_callMethod( $method = '___execute', $arguments = [0 => TRUE] ).../WireHooks.php:952 50.07152254232ProcessWire\ProcessPageView->___execute( $internal = TRUE ).../Wire.php:416 60.08122294792ProcessWire\ProcessPageView->renderPage( $page = class ProcessWire\Page { public $id = 3223; public $name = '4-checkout-ui-changes-for-a-highly-significant-1-sales-on-menufy-com'; public $parent = '/blog/'; public $template = 'post'; public $title = '4 Checkout UI Changes For A Highly Significant +1% Sales On Menufy.com'; public $post_tags = '(PageArray) 3157'; public $body_blocks = '(RepeaterMatrixPageArray) 6683'; public $date = 1540918414; public $comments = '(CommentArray) '; public $summary = ''; public $body = ''; public $data = ['title' => '4 Checkout UI Changes For A Highly Significant +1% Sales On Menufy.com', 'post_tags' => class ProcessWire\PageArray { ... }, 'body_blocks' => class ProcessWire\RepeaterMatrixPageArray { ... }, 'date' => 1540918414, 'comments' => class ProcessWire\CommentArray { ... }, 'summary' => '', 'body' => ''] }, $request = class ProcessWire\PagesRequest { } ).../ProcessPageView.module:114 70.09902324928ProcessWire\Wire->__call( $method = 'render', $arguments = [] ).../ProcessPageView.module:184 80.09902324928ProcessWire\WireHooks->runHooks( $object = class ProcessWire\Page { public $id = 3223; public $name = '4-checkout-ui-changes-for-a-highly-significant-1-sales-on-menufy-com'; public $parent = '/blog/'; public $template = 'post'; public $title = '4 Checkout UI Changes For A Highly Significant +1% Sales On Menufy.com'; public $post_tags = '(PageArray) 3157'; public $body_blocks = '(RepeaterMatrixPageArray) 6683'; public $date = 1540918414; public $comments = '(CommentArray) '; public $summary = ''; public $body = ''; public $data = ['title' => '4 Checkout UI Changes For A Highly Significant +1% Sales On Menufy.com', 'post_tags' => class ProcessWire\PageArray { ... }, 'body_blocks' => class ProcessWire\RepeaterMatrixPageArray { ... }, 'date' => 1540918414, 'comments' => class ProcessWire\CommentArray { ... }, 'summary' => '', 'body' => ''] }, $method = 'render', $arguments = [], $type = ??? ).../Wire.php:484 90.09912326888ProcessWire\Wire->__call( $method = 'renderPage', $arguments = [0 => class ProcessWire\HookEvent { public $data = [...] }] ).../WireHooks.php:1060 100.09912326888ProcessWire\WireHooks->runHooks( $object = class ProcessWire\PageRender { public $data = ['clearCache' => 1] }, $method = 'renderPage', $arguments = [0 => class ProcessWire\HookEvent { public $data = [...] }], $type = ??? ).../Wire.php:484 110.09912327304ProcessWire\Wire->_callMethod( $method = '___renderPage', $arguments = [0 => class ProcessWire\HookEvent { public $data = [...] }] ).../WireHooks.php:952 120.09912327304ProcessWire\PageRender->___renderPage( $event = class ProcessWire\HookEvent { public $data = ['object' => class ProcessWire\Page { ... }, 'method' => 'render', 'arguments' => [...], 'return' => NULL, 'replace' => FALSE, 'options' => [...], 'id' => 'Page:100.0:render', 'cancelHooks' => FALSE, 'when' => 'after'] } ).../Wire.php:416 130.10012327864ProcessWire\Wire->__call( $method = 'render', $arguments = [] ).../PageRender.module:575 140.10012327864ProcessWire\WireHooks->runHooks( $object = class ProcessWire\TemplateFile { public $data = ['wire' => class ProcessWire\ProcessWire { ... }, 'classLoader' => class ProcessWire\WireClassLoader { ... }, 'hooks' => class ProcessWire\WireHooks { ... }, 'config' => class ProcessWire\Config { ... }, 'notices' => class ProcessWire\Notices { ... }, 'urls' => class ProcessWire\Paths { ... }, 'log' => class ProcessWire\WireLog { ... }, 'sanitizer' => class ProcessWire\Sanitizer { ... }, 'datetime' => class ProcessWire\WireDateTime { ... }, 'files' => class ProcessWire\WireFileTools { ... }, 'mail' => class ProcessWire\WireMailTools { ... }, 'database' => class ProcessWire\WireDatabasePDO { ... }, 'db' => class ProcessWire\DatabaseMysqli { ... }, 'cache' => class ProcessWire\WireCache { ... }, 'modules' => class ProcessWire\Modules { ... }, 'procache' => class ProcessWire\ProCache { ... }, 'fieldtypes' => class ProcessWire\Fieldtypes { ... }, 'fields' => class ProcessWire\Fields { ... }, 'fieldgroups' => class ProcessWire\Fieldgroups { ... }, 'templates' => class ProcessWire\Templates { ... }, 'pages' => class ProcessWire\Pages { ... }, 'permissions' => class ProcessWire\Permissions { ... }, 'roles' => class ProcessWire\Roles { ... }, 'users' => class ProcessWire\Users { ... }, 'user' => class ProcessWire\User { ... }, 'session' => class ProcessWire\Session { ... }, 'input' => class ProcessWire\WireInput { ... }, 'buster' => class ProcessWire\ProCacheBuster { ... }, 'process' => class ProcessWire\ProcessPageView { ... }, 'page' => class ProcessWire\Page { ... }, 'options' => [...]] }, $method = 'render', $arguments = [], $type = ??? ).../Wire.php:484 150.10022329216ProcessWire\Wire->_callMethod( $method = '___render', $arguments = [] ).../WireHooks.php:952 160.10022329216ProcessWire\TemplateFile->___render( ).../Wire.php:413 170.20792872136require( '/home/jlahijani/Sites/goodui.org/site/templates/_main.php ).../TemplateFile.php:340 180.20922898424include( '/home/jlahijani/Sites/goodui.org/site/templates/_og.php ).../_main.php:64 190.21152899160strip_tags( $string = NULL ).../_og.php:13 " />

4 Checkout UI Changes For A Highly Significant +1% Sales On Menufy.com

Tagged as: Results

Menufy.com, a restaurant order & delivery service, ran a multiple change A/B test on their checkout page (with our help). I really like this experiment because it's effect is rather small and yet tightly defined in terms of its statistical significance. Sometimes when we make UI improvements we might feel that our work will have a great impact, and this test brings us down a little closer to reality. Here are the changes which were tested and in return inspired our evidence-based patterns.