3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php // Everything you enter here will be executed by our servers. Try it! $data = array( array( 'id' => 1, 'name' => 'bob', 'product_id' => 1, 'product' => 'laptop', 'price' => 999, ), array( 'id' => 1, 'name' => 'bob', 'product_id' => 2, 'product' => 'mouse', 'price' => 15, ), array( 'id' => 1, 'name' => 'bob', 'product_id' => 3, 'product' => 'keyboard', 'price' => 25, ), array( 'id' => 2, 'name' => 'steve', 'product_id' => 1, 'product' => 'book', 'price' => 5, ), array( 'id' => 2, 'name' => 'steve', 'product_id' => 2, 'product' => 'mouse', 'price' => 15, ), array( 'id' => 2, 'name' => 'steve', 'product_id' => 3, 'product' => 'keyboard', 'price' => 25, ) ); $output = array(); $userColumnIntersect = array_flip(array( 'id', 'name', )); $productColumnIntersect = array_flip(array( 'product', 'price', )); foreach($data as $row){ $id = $row['id']; if(!isset($output[$id])){ $output[$id] = array_intersect_keys($row, $userColumnIntersect); $output[$id]['products'] = array(); } $productId = $row['product_id']; if(!isset($output[$id]['products'][$productId])){ $productDataRow = array_intersect_keys($row, $productColumnIntersect); $output[$id]['products'][$productId] = $productDataRow; } } echo '<pre>'; print_r($output);
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Call to undefined function array_intersect_keys() in /in/P5AAI:68 Stack trace: #0 {main} thrown in /in/P5AAI on line 68
Process exited with code 255.
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0
Fatal error: Call to undefined function array_intersect_keys() in /in/P5AAI on line 68
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_intersect_keys() in /in/P5AAI on line 68
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: array_intersect_keys() in /in/P5AAI on line 68
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_intersect_keys() in /in/P5AAI on line 68