3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php ini_set('display_errors', 1); error_reporting(E_ALL); $db_results = array( array('cat' => 1, 'id' => 1), array('cat' => 1, 'id' => 2), array('cat' => 2, 'id' => 3), array('cat' => 1, 'id' => 4) ]; $category_map = []; foreach ( $db_results as $row ) { $category_map[ $row['cat'] ][ $row['id'] ] = $row; } print_r($category_map);
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.4.27
Parse error: syntax error, unexpected ']', expecting ')' in /in/46EPT on line 11
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected ']', expecting ')' in /in/46EPT on line 11
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/46EPT on line 11
Process exited with code 255.