$demoArr = ['key'=>'value']; echo $demoArr; print $demoArr; print_r($demoArr); var_export($demoArr); var_dump($demoArr); ArrayArrayArray ( [key] => value ) array ( 'key' => 'value', ) /Applications/MAMP/htdocs/leaning/php/index.php:16: array (size=1) 'key' => string 'value' (length=5)