3v4l.org

run code in 300+ PHP versions simultaneously

sponsor
bughunt
search
recent
about

@ 2014-04-13T22:18:55Z

<?php

error_reporting(-1);

$db_results = array(
	array('cat' => 1, 'id' => 1),
	array('cat' => 1, 'id' => 2),
	array('cat' => 2, 'id' => 3),
	array('cat' => 2, 'id' => 4)
);

$category_map = array();
foreach ( $db_results as $row ) {
	$category_map[ $row['cat'] ][] = $row;
}

print_r($category_map);

Output
Performance
VLD
References
Branches

print_r: documentation ( source)
error_reporting: documentation ( source)

preferences:dark modelive preview

43.95 ms | 402 KiB | 5 Q