tryphp_func_array_flip.php:
<!DOCTYPE html> <html> <body> <?php $a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow"); $result=array_flip($a1); print_r($result); ?> </body> </html>
Array ( [red] => a [green] => b [blue] => c [yellow] => d )